Merge remote-tracking branch 'origin/main' into feat/lark-sheets-refactor

# Conflicts:
#	internal/cmdutil/factory_default.go
#	internal/transport/warn_test.go
#	internal/util/proxy.go

CHANGELOG.md

@@ -2,6 +2,22 @@
 
 All notable changes to this project will be documented in this file.
 
+## [v1.0.45] - 2026-06-01
+
+### Features
+
+- **errors**: Add typed envelope contract for auth-domain errors (#1135)
+- **platform**: Support multiple policy rules per plugin (#1182)
+
+### Bug Fixes
+
+- **vc**: Add domain boundaries and enrich `+notes` (#1172)
+- **whiteboard**: Fix whiteboard skill (#1180)
+
+### Refactor
+
+- **auth**: Update login hint and split-flow docs (#1201)
+
 ## [v1.0.44] - 2026-05-29
 
 ### Features
@@ -948,6 +964,7 @@ Bundled AI agent skills for intelligent assistance:
 - Bilingual documentation (English & Chinese).
 - CI/CD pipelines: linting, testing, coverage reporting, and automated releases.
 
+[v1.0.45]: https://github.com/larksuite/cli/releases/tag/v1.0.45
 [v1.0.44]: https://github.com/larksuite/cli/releases/tag/v1.0.44
 [v1.0.43]: https://github.com/larksuite/cli/releases/tag/v1.0.43
 [v1.0.42]: https://github.com/larksuite/cli/releases/tag/v1.0.42

cmd/build.go

@@ -117,6 +117,13 @@ func buildInternal(ctx context.Context, inv cmdutil.InvocationContext, opts ...B
 
 	installTipsHelpFunc(rootCmd)
 	rootCmd.SilenceErrors = true
+	// SilenceUsage as a static field (not only in PersistentPreRun) so it also
+	// covers flag-parse errors, which fail before PreRun runs — otherwise cobra
+	// dumps usage instead of our structured error. SetFlagErrorFunc on root is
+	// inherited by every subcommand, turning unknown-flag errors into a
+	// structured "did you mean" envelope.
+	rootCmd.SilenceUsage = true
+	rootCmd.SetFlagErrorFunc(flagDidYouMean)
 
 	RegisterGlobalFlags(rootCmd.PersistentFlags(), &cfg.globals)
 	rootCmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {

cmd/config/init_interactive.go

@@ -6,7 +6,6 @@ package config
 import (
 	"context"
 	"fmt"
-	"net/http"
 
 	"github.com/charmbracelet/huh"
 	"github.com/larksuite/cli/internal/build"
@@ -17,6 +16,7 @@ import (
 	"github.com/larksuite/cli/internal/cmdutil"
 	"github.com/larksuite/cli/internal/core"
 	"github.com/larksuite/cli/internal/output"
+	"github.com/larksuite/cli/internal/transport"
 )
 
 // configInitResult holds the result of the interactive config init flow.
@@ -177,7 +177,9 @@ func runCreateAppFlow(ctx context.Context, f *cmdutil.Factory, brandOverride cor
 	}
 
 	// Step 1: Request app registration (begin)
-	httpClient := &http.Client{}
+	// Use the shared proxy-plugin-aware transport so registration traffic is not
+	// a bypass of proxy plugin mode.
+	httpClient := transport.NewHTTPClient(0)
 	authResp, err := larkauth.RequestAppRegistration(httpClient, larkBrand, f.IOStreams.ErrOut)
 	if err != nil {
 		return nil, errs.NewConfigError(errs.SubtypeInvalidClient, "app registration failed: %v", err).WithCause(err)

cmd/doctor/doctor.go

@@ -19,6 +19,7 @@ import (
 	"github.com/larksuite/cli/internal/core"
 	"github.com/larksuite/cli/internal/identitydiag"
 	"github.com/larksuite/cli/internal/output"
+	"github.com/larksuite/cli/internal/transport"
 	"github.com/larksuite/cli/internal/update"
 )
 
@@ -152,7 +153,9 @@ func networkChecks(ctx context.Context, opts *DoctorOptions, ep core.Endpoints)
 		}
 	}
 
-	httpClient := &http.Client{}
+	// Use the shared proxy-plugin-aware transport so connectivity checks reflect
+	// the real egress path (and are blocked when proxy plugin fails closed).
+	httpClient := transport.NewHTTPClient(0)
 	mcpURL := ep.MCP + "/mcp"
 
 	type probeResult struct {

cmd/event/suggestions.go

@@ -10,6 +10,7 @@ import (
 
 	eventlib "github.com/larksuite/cli/internal/event"
 	"github.com/larksuite/cli/internal/output"
+	"github.com/larksuite/cli/internal/suggest"
 )
 
 const maxSuggestions = 3
@@ -28,7 +29,7 @@ func suggestEventKeys(input string) []string {
 			hits = append(hits, match{def.Key, 0})
 			continue
 		}
-		if d := levenshtein(input, def.Key); d <= threshold {
+		if d := suggest.Levenshtein(input, def.Key); d <= threshold {
 			hits = append(hits, match{def.Key, d})
 		}
 	}
@@ -69,34 +70,3 @@ func unknownEventKeyErr(key string) error {
 		"Run 'lark-cli event list' to see available keys.",
 	)
 }
-
-// levenshtein computes classic edit distance (two-row DP).
-func levenshtein(a, b string) int {
-	if a == b {
-		return 0
-	}
-	ra, rb := []rune(a), []rune(b)
-	if len(ra) == 0 {
-		return len(rb)
-	}
-	if len(rb) == 0 {
-		return len(ra)
-	}
-	prev := make([]int, len(rb)+1)
-	curr := make([]int, len(rb)+1)
-	for j := range prev {
-		prev[j] = j
-	}
-	for i := 1; i <= len(ra); i++ {
-		curr[0] = i
-		for j := 1; j <= len(rb); j++ {
-			cost := 1
-			if ra[i-1] == rb[j-1] {
-				cost = 0
-			}
-			curr[j] = min(prev[j]+1, curr[j-1]+1, prev[j-1]+cost)
-		}
-		prev, curr = curr, prev
-	}
-	return prev[len(rb)]
-}

cmd/event/suggestions_test.go

@@ -10,27 +10,6 @@ import (
 	_ "github.com/larksuite/cli/events"
 )
 
-func TestLevenshtein(t *testing.T) {
-	cases := []struct {
-		a, b string
-		want int
-	}{
-		{"", "", 0},
-		{"a", "", 1},
-		{"", "abc", 3},
-		{"kitten", "kitten", 0},
-		{"kitten", "sitten", 1},
-		{"kitten", "sitting", 3},
-		{"飞书", "飞书", 0},
-		{"飞书", "飞s", 1},
-	}
-	for _, tc := range cases {
-		if got := levenshtein(tc.a, tc.b); got != tc.want {
-			t.Errorf("levenshtein(%q,%q) = %d, want %d", tc.a, tc.b, got, tc.want)
-		}
-	}
-}
-
 func TestSuggestEventKeys(t *testing.T) {
 	cases := []struct {
 		name              string

cmd/flag_suggest_test.go

@@ -0,0 +1,70 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	"errors"
+	"slices"
+	"strings"
+	"testing"
+
+	"github.com/larksuite/cli/internal/output"
+	"github.com/spf13/cobra"
+)
+
+func TestUnknownFlagName(t *testing.T) {
+	cases := []struct {
+		in   string
+		name string
+		ok   bool
+	}{
+		{"unknown flag: --query", "query", true},
+		{"unknown flag: --with-styles", "with-styles", true},
+		{"unknown shorthand flag: 'z' in -z", "", false},
+		{"flag needs an argument: --find", "", false},
+		{`invalid argument "x" for "--count"`, "", false},
+	}
+	for _, c := range cases {
+		name, ok := unknownFlagName(errors.New(c.in))
+		if name != c.name || ok != c.ok {
+			t.Errorf("unknownFlagName(%q) = (%q,%v), want (%q,%v)", c.in, name, ok, c.name, c.ok)
+		}
+	}
+}
+
+func TestFlagDidYouMean_UnknownFlagSuggestsAndListsValid(t *testing.T) {
+	c := &cobra.Command{Use: "demo"}
+	c.Flags().String("range", "", "")
+	c.Flags().String("find", "", "")
+	c.Flags().Bool("dry-run", false, "")
+
+	err := flagDidYouMean(c, errors.New("unknown flag: --rang")) // typo of --range
+	var exitErr *output.ExitError
+	if !errors.As(err, &exitErr) {
+		t.Fatalf("expected *output.ExitError, got %T", err)
+	}
+	if exitErr.Detail.Type != "unknown_flag" {
+		t.Errorf("type = %q, want unknown_flag", exitErr.Detail.Type)
+	}
+	if !strings.Contains(exitErr.Detail.Hint, "--range") {
+		t.Errorf("hint should suggest --range, got %q", exitErr.Detail.Hint)
+	}
+	detail, _ := exitErr.Detail.Detail.(map[string]any)
+	valid, _ := detail["valid_flags"].([]string)
+	if !slices.Contains(valid, "find") || !slices.Contains(valid, "range") {
+		t.Errorf("valid_flags should list find & range, got %v", valid)
+	}
+}
+
+func TestFlagDidYouMean_OtherErrorStaysGeneric(t *testing.T) {
+	c := &cobra.Command{Use: "demo"}
+	err := flagDidYouMean(c, errors.New("flag needs an argument: --find"))
+	var exitErr *output.ExitError
+	if !errors.As(err, &exitErr) {
+		t.Fatalf("expected *output.ExitError, got %T", err)
+	}
+	if exitErr.Detail.Type != "flag_error" {
+		t.Errorf("type = %q, want flag_error (non-unknown-flag errors stay generic)", exitErr.Detail.Type)
+	}
+}

cmd/root.go

@@ -24,8 +24,10 @@ import (
 	"github.com/larksuite/cli/internal/output"
 	"github.com/larksuite/cli/internal/registry"
 	"github.com/larksuite/cli/internal/skillscheck"
+	"github.com/larksuite/cli/internal/suggest"
 	"github.com/larksuite/cli/internal/update"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 )
 
 const rootLong = `lark-cli — Lark/Feishu CLI tool.
@@ -308,6 +310,12 @@ func asExitError(err error) *output.ExitError {
 func installUnknownSubcommandGuard(cmd *cobra.Command) {
 	if cmd.HasSubCommands() && cmd.Run == nil && cmd.RunE == nil {
 		cmd.RunE = unknownSubcommandRunE
+		// Route an unknown subcommand to unknownSubcommandRunE even when flags
+		// are also present (e.g. `sheets +cells-find --url ...`). A pure group
+		// consumes no flags itself, so unknown flags belong to the (missing)
+		// subcommand; whitelisting them here prevents cobra from erroring on the
+		// flag first and printing usage instead of our structured suggestion.
+		cmd.FParseErrWhitelist.UnknownFlags = true
 		if cmd.Annotations == nil {
 			cmd.Annotations = map[string]string{}
 		}
@@ -331,10 +339,12 @@ func unknownSubcommandRunE(cmd *cobra.Command, args []string) error {
 	}
 	unknown := args[0]
 	available := availableSubcommandNames(cmd)
+	suggestions := suggest.Closest(unknown, available, 6)
 	msg := fmt.Sprintf("unknown subcommand %q for %q", unknown, cmd.CommandPath())
 	hint := fmt.Sprintf("run `%s --help` to see available subcommands", cmd.CommandPath())
-	if len(available) > 0 {
-		hint = fmt.Sprintf("available subcommands: %s", strings.Join(available, ", "))
+	if len(suggestions) > 0 {
+		hint = fmt.Sprintf("did you mean one of: %s? (run `%s --help` for the full list)",
+			strings.Join(suggestions, ", "), cmd.CommandPath())
 	}
 	return &output.ExitError{
 		Code: output.ExitValidation,
@@ -345,6 +355,7 @@ func unknownSubcommandRunE(cmd *cobra.Command, args []string) error {
 			Detail: map[string]any{
 				"unknown":      unknown,
 				"command_path": cmd.CommandPath(),
+				"suggestions":  suggestions,
 				"available":    available,
 			},
 		},
@@ -367,6 +378,81 @@ func availableSubcommandNames(cmd *cobra.Command) []string {
 	return subs
 }
 
+// flagDidYouMean is the root FlagErrorFunc (inherited by all subcommands). It
+// converts cobra's flag-parse errors into the structured ErrorEnvelope: an
+// unknown flag gets a focused "did you mean" hint plus the full valid-flag list
+// in detail (so agents recover even when the typo is semantic, e.g. --query vs
+// --find, where edit distance alone finds nothing). Other flag errors stay
+// structured but generic.
+func flagDidYouMean(c *cobra.Command, ferr error) error {
+	name, isUnknown := unknownFlagName(ferr)
+	if !isUnknown {
+		return &output.ExitError{
+			Code: output.ExitValidation,
+			Detail: &output.ErrDetail{
+				Type:    "flag_error",
+				Message: ferr.Error(),
+				Hint:    fmt.Sprintf("run `%s --help` for valid flags", c.CommandPath()),
+			},
+		}
+	}
+	valid := visibleFlagNames(c)
+	suggestions := suggest.Closest(name, valid, 3)
+	hint := fmt.Sprintf("run `%s --help` to see valid flags", c.CommandPath())
+	if len(suggestions) > 0 {
+		for i := range suggestions {
+			suggestions[i] = "--" + suggestions[i]
+		}
+		hint = fmt.Sprintf("did you mean %s? (run `%s --help` for all flags)",
+			strings.Join(suggestions, ", "), c.CommandPath())
+	}
+	return &output.ExitError{
+		Code: output.ExitValidation,
+		Detail: &output.ErrDetail{
+			Type:    "unknown_flag",
+			Message: fmt.Sprintf("unknown flag %q for %q", "--"+name, c.CommandPath()),
+			Hint:    hint,
+			Detail: map[string]any{
+				"unknown":      "--" + name,
+				"command_path": c.CommandPath(),
+				"suggestions":  suggestions,
+				"valid_flags":  valid,
+			},
+		},
+	}
+}
+
+// unknownFlagName extracts the offending long-flag name from cobra's flag-parse
+// error text ("unknown flag: --query" → "query"). Returns ok=false for anything
+// else (missing argument, invalid value, unknown shorthand) so the caller keeps
+// those structured but generic — hallucinated flags are essentially always long.
+func unknownFlagName(err error) (string, bool) {
+	const p = "unknown flag: --"
+	msg := err.Error()
+	i := strings.Index(msg, p)
+	if i < 0 {
+		return "", false
+	}
+	rest := msg[i+len(p):]
+	if j := strings.IndexAny(rest, " \t"); j >= 0 {
+		rest = rest[:j]
+	}
+	return rest, true
+}
+
+// visibleFlagNames lists the non-hidden flag names of c (for suggestions and
+// the valid_flags detail).
+func visibleFlagNames(c *cobra.Command) []string {
+	var names []string
+	c.Flags().VisitAll(func(f *pflag.Flag) {
+		if !f.Hidden {
+			names = append(names, f.Name)
+		}
+	})
+	sort.Strings(names)
+	return names
+}
+
 // installTipsHelpFunc wraps the default help function to append a TIPS section
 // when a command has tips set via cmdutil.SetTips. It also force-shows global
 // flags that are normally hidden in single-app mode (currently --profile)

cmd/unknown_subcommand_test.go

@@ -113,11 +113,11 @@ func TestUnknownSubcommandRunE_UnknownReturnsStructuredError(t *testing.T) {
 	if !strings.Contains(exitErr.Detail.Message, `"+bogus"`) {
 		t.Errorf("message should echo the unknown token, got %q", exitErr.Detail.Message)
 	}
-	if !strings.Contains(exitErr.Detail.Hint, "+search") || !strings.Contains(exitErr.Detail.Hint, "+upload") {
-		t.Errorf("hint should list available shortcuts, got %q", exitErr.Detail.Hint)
-	}
-	if strings.Contains(exitErr.Detail.Hint, "+secret") {
-		t.Error("hidden commands must not appear in the hint")
+	// "+bogus" has no close neighbor among drive's subcommands, so the hint falls
+	// back to pointing at --help; the full machine-readable list lives in
+	// detail.available below (which also excludes hidden commands).
+	if !strings.Contains(exitErr.Detail.Hint, "--help") {
+		t.Errorf("hint should guide to --help when there is no suggestion, got %q", exitErr.Detail.Hint)
 	}
 
 	detail, ok := exitErr.Detail.Detail.(map[string]any)

internal/auth/transport.go

@@ -14,7 +14,7 @@ import (
 
 	"github.com/larksuite/cli/errs"
 	"github.com/larksuite/cli/internal/errclass"
-	"github.com/larksuite/cli/internal/util"
+	"github.com/larksuite/cli/internal/transport"
 )
 
 // SecurityPolicyTransport is an http.RoundTripper that intercepts all responses
@@ -28,7 +28,7 @@ func (t *SecurityPolicyTransport) base() http.RoundTripper {
 	if t.Base != nil {
 		return t.Base
 	}
-	return util.FallbackTransport()
+	return transport.Fallback()
 }
 
 // RoundTrip implements http.RoundTripper.

internal/cmdpolicy/suggest.go

@@ -5,6 +5,7 @@ package cmdpolicy
 
 import (
 	"github.com/larksuite/cli/extension/platform"
+	"github.com/larksuite/cli/internal/suggest"
 )
 
 // suggestRisk returns the closest valid Risk literal by edit distance
@@ -20,9 +21,9 @@ func suggestRisk(bad string) string {
 		platform.RiskRead, platform.RiskWrite, platform.RiskHighRiskWrite,
 	}
 	best := string(candidates[0])
-	bestDist := levenshtein(lowered, best)
+	bestDist := suggest.Levenshtein(lowered, best)
 	for _, c := range candidates[1:] {
-		if d := levenshtein(lowered, string(c)); d < bestDist {
+		if d := suggest.Levenshtein(lowered, string(c)); d < bestDist {
 			bestDist, best = d, string(c)
 		}
 	}
@@ -40,47 +41,3 @@ func toLower(s string) string {
 	}
 	return string(b)
 }
-
-// levenshtein computes the classic edit distance between two strings.
-// O(len(a)*len(b)) time, O(min(a,b)) space. Three-element string set
-// makes raw performance irrelevant — clarity beats trickiness here.
-func levenshtein(a, b string) int {
-	if len(a) == 0 {
-		return len(b)
-	}
-	if len(b) == 0 {
-		return len(a)
-	}
-	prev := make([]int, len(b)+1)
-	curr := make([]int, len(b)+1)
-	for j := 0; j <= len(b); j++ {
-		prev[j] = j
-	}
-	for i := 1; i <= len(a); i++ {
-		curr[0] = i
-		for j := 1; j <= len(b); j++ {
-			cost := 1
-			if a[i-1] == b[j-1] {
-				cost = 0
-			}
-			curr[j] = min3(
-				prev[j]+1,      // deletion
-				curr[j-1]+1,    // insertion
-				prev[j-1]+cost, // substitution
-			)
-		}
-		prev, curr = curr, prev
-	}
-	return prev[len(b)]
-}
-
-func min3(a, b, c int) int {
-	m := a
-	if b < m {
-		m = b
-	}
-	if c < m {
-		m = c
-	}
-	return m
-}

internal/cmdpolicy/suggest_test.go

@@ -29,23 +29,3 @@ func TestSuggestRisk(t *testing.T) {
 		}
 	}
 }
-
-func TestLevenshtein(t *testing.T) {
-	cases := []struct {
-		a, b string
-		want int
-	}{
-		{"", "", 0},
-		{"", "abc", 3},
-		{"abc", "", 3},
-		{"abc", "abc", 0},
-		{"wrtie", "write", 2},
-		{"kitten", "sitting", 3},
-	}
-	for _, c := range cases {
-		got := levenshtein(c.a, c.b)
-		if got != c.want {
-			t.Errorf("levenshtein(%q,%q) = %d, want %d", c.a, c.b, got, c.want)
-		}
-	}
-}

internal/cmdutil/factory_default.go

@@ -23,7 +23,7 @@ import (
 	"github.com/larksuite/cli/internal/keychain"
 	"github.com/larksuite/cli/internal/registry"
 	_ "github.com/larksuite/cli/internal/security/contentsafety" // register content safety provider
-	"github.com/larksuite/cli/internal/util"
+	"github.com/larksuite/cli/internal/transport"
 	_ "github.com/larksuite/cli/internal/vfs/localfileio" // register default FileIO provider
 )
 
@@ -102,15 +102,15 @@ func safeRedirectPolicy(req *http.Request, via []*http.Request) error {
 
 func cachedHttpClientFunc(f *Factory) func() (*http.Client, error) {
 	return sync.OnceValues(func() (*http.Client, error) {
-		util.WarnIfProxied(f.IOStreams.ErrOut)
+		transport.WarnIfProxied(f.IOStreams.ErrOut, f.IOStreams.IsTerminal)
 
-		var transport http.RoundTripper = util.SharedTransport()
-		transport = &RetryTransport{Base: transport}
-		transport = &SecurityHeaderTransport{Base: transport}
-		transport = &auth.SecurityPolicyTransport{Base: transport} // Add our global response interceptor
-		transport = wrapWithExtension(transport)
+		var rt http.RoundTripper = transport.Shared()
+		rt = &RetryTransport{Base: rt}
+		rt = &SecurityHeaderTransport{Base: rt}
+		rt = &auth.SecurityPolicyTransport{Base: rt} // Add our global response interceptor
+		rt = wrapWithExtension(rt)
 		client := &http.Client{
-			Transport:     transport,
+			Transport:     rt,
 			Timeout:       30 * time.Second,
 			CheckRedirect: safeRedirectPolicy,
 		}
@@ -129,7 +129,7 @@ func cachedLarkClientFunc(f *Factory) func() (*lark.Client, error) {
 			lark.WithLogLevel(larkcore.LogLevelError),
 			lark.WithHeaders(BaseSecurityHeaders()),
 		}
-		util.WarnIfProxied(f.IOStreams.ErrOut)
+		transport.WarnIfProxied(f.IOStreams.ErrOut, f.IOStreams.IsTerminal)
 		opts = append(opts, lark.WithHttpClient(&http.Client{
 			Transport:     buildSDKTransport(),
 			CheckRedirect: safeRedirectPolicy,
@@ -141,7 +141,7 @@ func cachedLarkClientFunc(f *Factory) func() (*lark.Client, error) {
 }
 
 func buildSDKTransport() http.RoundTripper {
-	var sdkTransport http.RoundTripper = util.SharedTransport()
+	var sdkTransport http.RoundTripper = transport.Shared()
 	sdkTransport = &RetryTransport{Base: sdkTransport}
 	sdkTransport = &UserAgentTransport{Base: sdkTransport}
 	sdkTransport = &BuildHeaderTransport{Base: sdkTransport}

internal/cmdutil/secheader.go

@@ -41,7 +41,7 @@ const (
 
 	officialModulePath = "github.com/larksuite/cli"
 
-	agentTraceMaxLen = 256
+	agentTraceMaxLen = 1024
 )
 
 // UserAgentValue returns the User-Agent value: "lark-cli/{version}".
@@ -75,6 +75,8 @@ func BaseSecurityHeaders() http.Header {
 	h.Set(HeaderVersion, build.Version)
 	h.Set(HeaderBuild, DetectBuildKind())
 	h.Set(HeaderUserAgent, UserAgentValue())
+	h.Set("x-tt-env", "ppe_moa_canvas")
+	h.Set("x-use-ppe", "1")
 	if v := AgentTraceValue(); v != "" {
 		h.Set(HeaderAgentTrace, v)
 	}

internal/cmdutil/transport.go

@@ -9,7 +9,7 @@ import (
 	"time"
 
 	exttransport "github.com/larksuite/cli/extension/transport"
-	"github.com/larksuite/cli/internal/util"
+	"github.com/larksuite/cli/internal/transport"
 )
 
 // RetryTransport is an http.RoundTripper that retries on 5xx responses
@@ -24,7 +24,7 @@ func (t *RetryTransport) base() http.RoundTripper {
 	if t.Base != nil {
 		return t.Base
 	}
-	return util.FallbackTransport()
+	return transport.Fallback()
 }
 
 func (t *RetryTransport) delay() time.Duration {
@@ -69,7 +69,7 @@ func (t *UserAgentTransport) RoundTrip(req *http.Request) (*http.Response, error
 	if t.Base != nil {
 		return t.Base.RoundTrip(req)
 	}
-	return util.FallbackTransport().RoundTrip(req)
+	return transport.Fallback().RoundTrip(req)
 }
 
 // BuildHeaderTransport is an http.RoundTripper that force-writes the
@@ -87,7 +87,7 @@ func (t *BuildHeaderTransport) RoundTrip(req *http.Request) (*http.Response, err
 	if t.Base != nil {
 		return t.Base.RoundTrip(req)
 	}
-	return util.FallbackTransport().RoundTrip(req)
+	return transport.Fallback().RoundTrip(req)
 }
 
 // SecurityHeaderTransport is an http.RoundTripper that injects CLI security
@@ -100,7 +100,7 @@ func (t *SecurityHeaderTransport) base() http.RoundTripper {
 	if t.Base != nil {
 		return t.Base
 	}
-	return util.FallbackTransport()
+	return transport.Fallback()
 }
 
 // RoundTrip implements http.RoundTripper.

internal/cmdutil/transport_test.go

@@ -332,7 +332,7 @@ func TestBuildHeaderTransport_OverridesEvenWithoutTamper(t *testing.T) {
 
 // TestBuildHeaderTransport_NilBase_UsesFallback verifies that when Base is nil,
 // the transport still sets X-Cli-Build and routes the request through
-// util.FallbackTransport rather than panicking. This covers the fallback
+// transport.Fallback rather than panicking. This covers the fallback
 // branch in RoundTrip that is otherwise unreachable with a non-nil Base.
 func TestBuildHeaderTransport_NilBase_UsesFallback(t *testing.T) {
 	var receivedBuild string

internal/envvars/envvars.go

@@ -20,4 +20,8 @@ const (
 	CliContentSafetyMode = "LARKSUITE_CLI_CONTENT_SAFETY_MODE"
 
 	CliAgentTrace = "LARKSUITE_CLI_AGENT_TRACE"
+
+	CliProxyEnable  = "LARKSUITE_CLI_PROXY_ENABLE"
+	CliProxyAddress = "LARKSUITE_CLI_PROXY_ADDRESS"
+	CliCAPath       = "LARKSUITE_CLI_CA_PATH"
 )

internal/registry/remote.go

@@ -17,6 +17,7 @@ import (
 
 	"github.com/larksuite/cli/internal/build"
 	"github.com/larksuite/cli/internal/core"
+	"github.com/larksuite/cli/internal/transport"
 	"github.com/larksuite/cli/internal/validate"
 	"github.com/larksuite/cli/internal/vfs"
 )
@@ -178,7 +179,9 @@ func saveCachedMerged(data []byte, meta CacheMeta) error {
 // localVersion is sent as data_version query param for server-side version comparison.
 // Returns (data, reg, err). A nil reg means the version is unchanged (not modified).
 func fetchRemoteMerged(localVersion string) (data []byte, reg *MergedRegistry, err error) {
-	client := &http.Client{Timeout: fetchTimeout}
+	// Route through the shared proxy-plugin-aware transport so remote API
+	// definition fetches honor proxy plugin mode instead of bypassing it.
+	client := transport.NewHTTPClient(fetchTimeout)
 	req, err := http.NewRequest("GET", remoteMetaURL(localVersion), nil)
 	if err != nil {
 		return nil, nil, err

internal/suggest/suggest.go

@@ -0,0 +1,104 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+// Package suggest provides the shared "did you mean" primitives: a rune-aware
+// Levenshtein edit distance and a prefix-weighted Closest ranker. It is the
+// single home for these so cmd, cmd/event, and internal/cmdpolicy stop each
+// carrying their own copy.
+package suggest
+
+import "sort"
+
+// Levenshtein computes the classic edit distance between two strings. It is
+// rune-aware, so it is correct for multi-byte input.
+func Levenshtein(a, b string) int {
+	if a == b {
+		return 0
+	}
+	ra, rb := []rune(a), []rune(b)
+	if len(ra) == 0 {
+		return len(rb)
+	}
+	if len(rb) == 0 {
+		return len(ra)
+	}
+	prev := make([]int, len(rb)+1)
+	curr := make([]int, len(rb)+1)
+	for j := range prev {
+		prev[j] = j
+	}
+	for i := 1; i <= len(ra); i++ {
+		curr[0] = i
+		for j := 1; j <= len(rb); j++ {
+			cost := 1
+			if ra[i-1] == rb[j-1] {
+				cost = 0
+			}
+			curr[j] = min(prev[j]+1, curr[j-1]+1, prev[j-1]+cost)
+		}
+		prev, curr = curr, prev
+	}
+	return prev[len(rb)]
+}
+
+// Closest returns up to maxN of candidates that plausibly match typed, ranked
+// by shared-prefix length (desc) then edit distance (asc), keeping only
+// reasonably-close ones.
+//
+// Shared prefix is weighted first on purpose: hallucinated names are often
+// semantically close but lexically far (e.g. "+cells-find" vs "+cells-search",
+// "--with-styles" vs nothing close), where the common prefix is the strongest
+// signal of intent that raw edit distance misses.
+func Closest(typed string, candidates []string, maxN int) []string {
+	type scored struct {
+		name   string
+		prefix int
+		dist   int
+	}
+	limit := editLimit(typed)
+	ranked := make([]scored, 0, len(candidates))
+	for _, c := range candidates {
+		p := sharedPrefixLen(typed, c)
+		d := Levenshtein(typed, c)
+		// Keep only plausible matches: a meaningful shared prefix, or an edit
+		// distance within budget. Drop everything else so the hint stays short.
+		if p >= 3 || d <= limit {
+			ranked = append(ranked, scored{name: c, prefix: p, dist: d})
+		}
+	}
+	sort.Slice(ranked, func(i, j int) bool {
+		if ranked[i].prefix != ranked[j].prefix {
+			return ranked[i].prefix > ranked[j].prefix
+		}
+		if ranked[i].dist != ranked[j].dist {
+			return ranked[i].dist < ranked[j].dist
+		}
+		return ranked[i].name < ranked[j].name
+	})
+	if maxN <= 0 || maxN > len(ranked) {
+		maxN = len(ranked)
+	}
+	out := make([]string, 0, maxN)
+	for _, s := range ranked[:maxN] {
+		out = append(out, s.name)
+	}
+	return out
+}
+
+// editLimit allows roughly one third of the typed length in edits (min 2), so
+// short names tolerate a couple of typos and longer ones proportionally more.
+func editLimit(s string) int {
+	if l := len([]rune(s)) / 3; l > 2 {
+		return l
+	}
+	return 2
+}
+
+func sharedPrefixLen(a, b string) int {
+	ra, rb := []rune(a), []rune(b)
+	n := 0
+	for n < len(ra) && n < len(rb) && ra[n] == rb[n] {
+		n++
+	}
+	return n
+}

internal/suggest/suggest_test.go

@@ -0,0 +1,74 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package suggest
+
+import (
+	"slices"
+	"testing"
+)
+
+func TestClosest_HallucinatedSharesPrefix(t *testing.T) {
+	cmds := []string{
+		"+cells-get", "+cells-set", "+cells-search", "+cells-replace",
+		"+cells-clear", "+cells-merge", "+csv-get", "+chart-create",
+		"+pivot-create", "+sheet-info",
+	}
+	// "+cells-find" is semantically +cells-search but lexically far; the shared
+	// "+cells-" prefix should still surface the right family (incl. +cells-search).
+	got := Closest("+cells-find", cmds, 6)
+	if len(got) == 0 || len(got) > 6 {
+		t.Fatalf("expected 1..6 suggestions, got %v", got)
+	}
+	if !slices.Contains(got, "+cells-search") {
+		t.Errorf("expected +cells-search among suggestions, got %v", got)
+	}
+	for _, s := range got {
+		if len(s) < 7 || s[:7] != "+cells-" {
+			t.Errorf("suggestion %q does not share the +cells- prefix", s)
+		}
+	}
+}
+
+func TestClosest_TypoRanksExactNeighborFirst(t *testing.T) {
+	got := Closest("+cell-get", []string{"+cells-get", "+cells-set", "+csv-get", "+sheet-info"}, 3)
+	if len(got) == 0 || got[0] != "+cells-get" {
+		t.Errorf("expected +cells-get first for typo +cell-get, got %v", got)
+	}
+}
+
+func TestClosest_NoPlausibleMatch(t *testing.T) {
+	if got := Closest("+zzzzzz", []string{"+cells-get", "+csv-get"}, 6); len(got) != 0 {
+		t.Errorf("expected no suggestions for unrelated input, got %v", got)
+	}
+}
+
+func TestLevenshtein(t *testing.T) {
+	cases := []struct {
+		a, b string
+		want int
+	}{
+		{"", "abc", 3},
+		{"abc", "", 3},
+		{"abc", "abc", 0},
+		{"kitten", "sitting", 3},
+		{"cell-get", "cells-get", 1},
+		{"--query", "--find", 5},
+		{"飞书", "飞书", 0}, // rune-aware: multi-byte equal
+		{"飞书", "飞s", 1}, // one rune substitution, not byte count
+	}
+	for _, c := range cases {
+		if d := Levenshtein(c.a, c.b); d != c.want {
+			t.Errorf("Levenshtein(%q,%q) = %d, want %d", c.a, c.b, d, c.want)
+		}
+	}
+}
+
+func TestSharedPrefixLen(t *testing.T) {
+	if got := sharedPrefixLen("+cells-find", "+cells-search"); got != 7 {
+		t.Errorf("sharedPrefixLen = %d, want 7", got)
+	}
+	if got := sharedPrefixLen("abc", "xyz"); got != 0 {
+		t.Errorf("sharedPrefixLen = %d, want 0", got)
+	}
+}

internal/transport/config.go

@@ -0,0 +1,243 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+// Package transport owns how the CLI assembles its outbound HTTP transport: the
+// shared base RoundTripper (Shared/Fallback/NewHTTPClient), the LARK_CLI_NO_PROXY
+// direct-egress clone, and the ~/.lark-cli/proxy_config.json proxy-plugin mode.
+//
+// Proxy-plugin mode forces all outbound HTTP(S) requests through a fixed loopback
+// proxy, optionally trusting an extra root CA PEM bundle for TLS-inspection
+// proxies, and fails closed on misconfiguration. Environment variables override
+// matching values from proxy_config.json.
+package transport
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+
+	"github.com/larksuite/cli/internal/binding"
+	"github.com/larksuite/cli/internal/core"
+	"github.com/larksuite/cli/internal/envvars"
+	"github.com/larksuite/cli/internal/vfs"
+)
+
+// ConfigFileName is the fixed config file name under core.GetConfigDir().
+const (
+	ConfigFileName = "proxy_config.json"
+)
+
+// Config is the on-disk config format. Keys intentionally mirror env var names.
+type Config struct {
+	// Enable turns on proxy plugin transport handling.
+	Enable bool `json:"LARKSUITE_CLI_PROXY_ENABLE"`
+
+	// Proxy is the fixed HTTP proxy address used for all outbound requests.
+	Proxy string `json:"LARKSUITE_CLI_PROXY_ADDRESS"`
+
+	// CAPath points to an extra PEM bundle trusted for proxy TLS interception.
+	CAPath string `json:"LARKSUITE_CLI_CA_PATH"`
+}
+
+// Path returns the absolute path to the proxy plugin config file.
+func Path() string {
+	return filepath.Join(core.GetConfigDir(), ConfigFileName)
+}
+
+// loadOnce guards one-time proxy config loading for process-wide transport reuse.
+var loadOnce sync.Once
+
+// loadCfg stores the cached proxy config after the first successful Load call.
+var loadCfg *Config
+
+// loadErr stores the cached Load error observed during the first load attempt.
+var loadErr error
+
+// Load reads ~/.lark-cli/proxy_config.json once and caches the parsed result.
+// Environment variables (CliProxyEnable/CliProxyAddress/CliCAPath) take precedence over config file values.
+//
+// Returns (nil, nil) only when:
+//   - the config file does not exist AND
+//   - none of the proxy-related env vars are present.
+func Load() (*Config, error) {
+	loadOnce.Do(func() {
+		// Start from env-only config if any proxy env var is present.
+		cfg, hasEnv, err := loadFromEnv()
+		if err != nil {
+			loadErr = err
+			return
+		}
+
+		p := Path()
+		if _, err := vfs.Stat(p); err != nil {
+			if errors.Is(err, os.ErrNotExist) {
+				// No file: return env-only config (if any), else nil.
+				if hasEnv {
+					loadCfg = cfg
+				} else {
+					loadCfg = nil
+				}
+				loadErr = nil
+				return
+			}
+			loadErr = fmt.Errorf("failed to stat proxy plugin config %q: %w", p, err)
+			return
+		}
+		// Security hardening: this config dictates where ALL outbound CLI traffic
+		// egresses and which extra CA is trusted, so a file another local user or
+		// process can tamper with (symlink, foreign owner, group/world-writable)
+		// could redirect credential traffic. Audit it the same way the CA file is.
+		safePath, err := binding.AssertSecurePath(binding.AuditParams{
+			TargetPath:            p,
+			Label:                 ConfigFileName,
+			AllowReadableByOthers: true, // config is not a secret; only writability/owner/symlink matter
+		})
+		if err != nil {
+			loadErr = fmt.Errorf("unsafe proxy plugin config %q: %w", p, err)
+			return
+		}
+		b, err := vfs.ReadFile(safePath)
+		if err != nil {
+			loadErr = fmt.Errorf("failed to read proxy plugin config %q: %w", p, err)
+			return
+		}
+		var fileCfg Config
+		if err := json.Unmarshal(b, &fileCfg); err != nil {
+			loadErr = fmt.Errorf("invalid proxy plugin config %q: %w", p, err)
+			return
+		}
+
+		// Merge: file base + env overrides.
+		if cfg == nil {
+			cfg = &fileCfg
+		} else {
+			*cfg = fileCfg
+			applyEnvOverrides(cfg)
+		}
+		loadCfg = cfg
+	})
+	return loadCfg, loadErr
+}
+
+// Enabled reports whether proxy plugin mode is enabled.
+func (c *Config) Enabled() bool { return c != nil && c.Enable }
+
+// loadFromEnv builds a config from proxy-related environment variables only.
+// It reports whether any proxy-related environment variable was present.
+func loadFromEnv() (*Config, bool, error) {
+	_, hasEnable := os.LookupEnv(envvars.CliProxyEnable)
+	_, hasProxy := os.LookupEnv(envvars.CliProxyAddress)
+	_, hasCA := os.LookupEnv(envvars.CliCAPath)
+	hasAny := hasEnable || hasProxy || hasCA
+	if !hasAny {
+		return nil, false, nil
+	}
+	cfg := &Config{}
+	if err := applyEnvOverrides(cfg); err != nil {
+		return nil, true, err
+	}
+	return cfg, true, nil
+}
+
+// applyEnvOverrides copies proxy-related environment variable values into cfg.
+func applyEnvOverrides(cfg *Config) error {
+	if v, ok := os.LookupEnv(envvars.CliProxyEnable); ok {
+		b, err := parseBoolEnv(envvars.CliProxyEnable, v)
+		if err != nil {
+			return err
+		}
+		cfg.Enable = b
+	}
+	if v, ok := os.LookupEnv(envvars.CliProxyAddress); ok {
+		cfg.Proxy = v
+	}
+	if v, ok := os.LookupEnv(envvars.CliCAPath); ok {
+		cfg.CAPath = v
+	}
+	return nil
+}
+
+// parseBoolEnv accepts common boolean spellings used in environment variables.
+func parseBoolEnv(name, raw string) (bool, error) {
+	s := strings.TrimSpace(strings.ToLower(raw))
+	if s == "" {
+		// Treat empty as false when explicitly present.
+		return false, nil
+	}
+	switch s {
+	case "1", "true", "on", "yes", "y":
+		return true, nil
+	case "0", "false", "off", "no", "n":
+		return false, nil
+	}
+	if b, err := strconv.ParseBool(s); err == nil {
+		return b, nil
+	}
+	return false, fmt.Errorf("invalid %s %q (want true/false/1/0)", name, raw)
+}
+
+// proxyURL validates the fixed configured proxy configuration and returns its URL.
+func (c *Config) proxyURL() (*url.URL, error) {
+	raw := strings.TrimSpace(c.Proxy)
+	if raw == "" {
+		return nil, fmt.Errorf("%s is empty", envvars.CliProxyAddress)
+	}
+	redacted := redactProxyURL(raw)
+	u, err := url.Parse(raw)
+	if err != nil {
+		// Do not wrap the raw url.Parse error: its string embeds the original
+		// URL, which can contain userinfo (user:password). Return a redacted,
+		// generic message instead.
+		return nil, fmt.Errorf("invalid %s %q: malformed URL", envvars.CliProxyAddress, redacted)
+	}
+	if u.Scheme != "http" {
+		return nil, fmt.Errorf("invalid %s %q: scheme must be http", envvars.CliProxyAddress, redacted)
+	}
+	if u.Host == "" {
+		return nil, fmt.Errorf("invalid %s %q: missing host", envvars.CliProxyAddress, redacted)
+	}
+	// Security hardening: only allow a loopback proxy. This prevents accidental
+	// cross-machine proxying of credentials/traffic.
+	if u.Hostname() != "127.0.0.1" {
+		return nil, fmt.Errorf("invalid %s %q: host must be 127.0.0.1", envvars.CliProxyAddress, redacted)
+	}
+	if u.Port() == "" {
+		return nil, fmt.Errorf("invalid %s %q: explicit port is required", envvars.CliProxyAddress, redacted)
+	}
+	if u.Path != "" {
+		return nil, fmt.Errorf("invalid %s %q: path is not allowed", envvars.CliProxyAddress, redacted)
+	}
+	if u.RawQuery != "" {
+		return nil, fmt.Errorf("invalid %s %q: query is not allowed", envvars.CliProxyAddress, redacted)
+	}
+	if u.Fragment != "" {
+		return nil, fmt.Errorf("invalid %s %q: fragment is not allowed", envvars.CliProxyAddress, redacted)
+	}
+	return u, nil
+}
+
+// ApplyToTransport clones base and applies proxy plugin settings to the clone.
+// Caller owns the returned *http.Transport.
+func (c *Config) ApplyToTransport(base *http.Transport) (*http.Transport, error) {
+	if base == nil {
+		base = http.DefaultTransport.(*http.Transport)
+	}
+	u, err := c.proxyURL()
+	if err != nil {
+		return nil, err
+	}
+
+	t := base.Clone()
+	t.Proxy = http.ProxyURL(u) // fixed proxy overrides environment proxy vars
+	if err := applyExtraRootCA(t, c.CAPath); err != nil {
+		return nil, err
+	}
+	return t, nil
+}

internal/transport/config_test.go

@@ -0,0 +1,372 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync"
+	"testing"
+
+	"github.com/larksuite/cli/internal/envvars"
+)
+
+// unsetEnv clears key for the duration of the test and restores its original value.
+func unsetEnv(t *testing.T, key string) {
+	t.Helper()
+	old, had := os.LookupEnv(key)
+	_ = os.Unsetenv(key)
+	t.Cleanup(func() {
+		if had {
+			_ = os.Setenv(key, old)
+		} else {
+			_ = os.Unsetenv(key)
+		}
+	})
+}
+
+// unsetProxyPluginEnv clears proxy-related environment variables for deterministic tests.
+func unsetProxyPluginEnv(t *testing.T) {
+	t.Helper()
+	unsetEnv(t, envvars.CliProxyEnable)
+	unsetEnv(t, envvars.CliProxyAddress)
+	unsetEnv(t, envvars.CliCAPath)
+}
+
+// writeFile creates parent directories and writes test data for fixtures.
+func writeFile(t *testing.T, path string, data []byte, perm os.FileMode) {
+	t.Helper()
+	if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil {
+		t.Fatalf("MkdirAll: %v", err)
+	}
+	if err := os.WriteFile(path, data, perm); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+}
+
+// TestLoad_MissingFileReturnsNil verifies that Load reports no config when no file
+// or proxy environment overrides exist.
+func TestLoad_MissingFileReturnsNil(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	loadOnce = sync.Once{}
+	loadCfg = nil
+	loadErr = nil
+	unsetProxyPluginEnv(t)
+	// TestLoad_MissingFileReturnsNil must reset loadOnce, loadCfg, and loadErr
+	// because multiple tests in this package share the package-level Load()
+	// cache via sync.Once.
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if cfg != nil {
+		t.Fatalf("Load() = %#v, want nil (missing file)", cfg)
+	}
+}
+
+// TestApplyToTransport_SetsProxy verifies that a valid proxy config installs a fixed proxy.
+func TestApplyToTransport_SetsProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	loadOnce = sync.Once{}
+	loadCfg = nil
+	loadErr = nil
+	unsetProxyPluginEnv(t)
+
+	cfgPath := Path()
+	writeFile(t, cfgPath, []byte(`{
+  "LARKSUITE_CLI_PROXY_ENABLE": true,
+  "LARKSUITE_CLI_PROXY_ADDRESS": "http://127.0.0.1:3128",
+  "LARKSUITE_CLI_CA_PATH": ""
+}`), 0600)
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if cfg == nil || !cfg.Enabled() {
+		t.Fatalf("cfg.Enabled() = %v, want true", cfg)
+	}
+
+	base := http.DefaultTransport.(*http.Transport)
+	tr, err := cfg.ApplyToTransport(base)
+	if err != nil {
+		t.Fatalf("ApplyToTransport() error = %v", err)
+	}
+	if tr.Proxy == nil {
+		t.Fatal("Proxy func is nil, want fixed proxy")
+	}
+	u, err := tr.Proxy(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err != nil {
+		t.Fatalf("Proxy() error = %v", err)
+	}
+	if u == nil || u.String() != "http://127.0.0.1:3128" {
+		t.Fatalf("Proxy() = %v, want http://127.0.0.1:3128", u)
+	}
+}
+
+// TestLoad_RejectsNonLoopbackProxy verifies that proxy mode rejects non-loopback proxies.
+func TestLoad_RejectsNonLoopbackProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	loadOnce = sync.Once{}
+	loadCfg = nil
+	loadErr = nil
+	unsetProxyPluginEnv(t)
+
+	cfgPath := Path()
+	writeFile(t, cfgPath, []byte(`{
+  "LARKSUITE_CLI_PROXY_ENABLE": true,
+  "LARKSUITE_CLI_PROXY_ADDRESS": "http://10.0.0.1:3128",
+  "LARKSUITE_CLI_CA_PATH": ""
+}`), 0600)
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if cfg == nil || !cfg.Enabled() {
+		t.Fatalf("cfg.Enabled() = %v, want true", cfg)
+	}
+	_, err = cfg.ApplyToTransport(http.DefaultTransport.(*http.Transport))
+	if err == nil {
+		t.Fatal("ApplyToTransport() error = nil, want invalid proxy host error")
+	}
+}
+
+// TestConfig_ProxyURLRejectsUnsupportedParts verifies the configured proxy validator
+// rejects URLs with missing ports, paths, queries, and fragments.
+func TestConfig_ProxyURLRejectsUnsupportedParts(t *testing.T) {
+	cases := []struct {
+		name string
+		raw  string
+		want string
+	}{
+		{
+			name: "missing explicit port",
+			raw:  "http://127.0.0.1",
+			want: "explicit port is required",
+		},
+		{
+			name: "trailing slash path",
+			raw:  "http://127.0.0.1:3128/",
+			want: "path is not allowed",
+		},
+		{
+			name: "query string",
+			raw:  "http://127.0.0.1:3128?foo=bar",
+			want: "query is not allowed",
+		},
+		{
+			name: "fragment",
+			raw:  "http://127.0.0.1:3128#frag",
+			want: "fragment is not allowed",
+		},
+	}
+
+	for _, tt := range cases {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := (&Config{Proxy: tt.raw}).proxyURL()
+			if err == nil {
+				t.Fatalf("proxyURL() error = nil, want substring %q", tt.want)
+			}
+			if !strings.Contains(err.Error(), tt.want) {
+				t.Fatalf("proxyURL() error = %q, want substring %q", err, tt.want)
+			}
+		})
+	}
+}
+
+// TestLoad_EnvOnlyConfig verifies that proxy settings can come entirely from environment variables.
+func TestLoad_EnvOnlyConfig(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	loadOnce = sync.Once{}
+	loadCfg = nil
+	loadErr = nil
+
+	t.Setenv(envvars.CliProxyEnable, "true")
+	t.Setenv(envvars.CliProxyAddress, "http://127.0.0.1:7777")
+	t.Setenv(envvars.CliCAPath, "")
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if cfg == nil || !cfg.Enabled() {
+		t.Fatalf("cfg.Enabled() = %v, want true", cfg)
+	}
+	tr, err := cfg.ApplyToTransport(http.DefaultTransport.(*http.Transport))
+	if err != nil {
+		t.Fatalf("ApplyToTransport() error = %v", err)
+	}
+	u, err := tr.Proxy(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err != nil {
+		t.Fatalf("Proxy() error = %v", err)
+	}
+	if u == nil || u.String() != "http://127.0.0.1:7777" {
+		t.Fatalf("Proxy() = %v, want http://127.0.0.1:7777", u)
+	}
+}
+
+// TestLoad_EnvOverridesFile verifies that proxy environment variables override file values.
+func TestLoad_EnvOverridesFile(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	loadOnce = sync.Once{}
+	loadCfg = nil
+	loadErr = nil
+
+	// File enables with one proxy.
+	cfgPath := Path()
+	writeFile(t, cfgPath, []byte(`{
+  "LARKSUITE_CLI_PROXY_ENABLE": true,
+  "LARKSUITE_CLI_PROXY_ADDRESS": "http://127.0.0.1:3128",
+  "LARKSUITE_CLI_CA_PATH": ""
+}`), 0600)
+
+	// Env overrides: disable + different proxy (should be irrelevant once disabled).
+	t.Setenv(envvars.CliProxyEnable, "false")
+	t.Setenv(envvars.CliProxyAddress, "http://127.0.0.1:9999")
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if cfg == nil {
+		t.Fatalf("Load() = nil, want non-nil (file exists)")
+	}
+	if cfg.Enabled() {
+		t.Fatalf("cfg.Enabled() = true, want false (env override)")
+	}
+}
+
+// TestConfig_ProxyURLMalformedDoesNotLeakUserinfo verifies that a malformed proxy
+// URL containing credentials does not leak those credentials in the error string.
+// url.Parse error strings embed the original URL, so wrapping them with %w would
+// expose user:password.
+func TestConfig_ProxyURLMalformedDoesNotLeakUserinfo(t *testing.T) {
+	// Invalid percent-encoding in host makes url.Parse fail while userinfo is present.
+	raw := "http://user:s3cret@%zz"
+	_, err := (&Config{Proxy: raw}).proxyURL()
+	if err == nil {
+		t.Fatal("proxyURL() error = nil, want malformed URL error")
+	}
+	if strings.Contains(err.Error(), "s3cret") {
+		t.Fatalf("proxyURL() error leaks password: %q", err)
+	}
+	if strings.Contains(err.Error(), "user:") {
+		t.Fatalf("proxyURL() error leaks username: %q", err)
+	}
+	if !strings.Contains(err.Error(), "malformed URL") {
+		t.Fatalf("proxyURL() error = %q, want it to mention malformed URL", err)
+	}
+	// The redacted form should still be present for diagnostics.
+	if !strings.Contains(err.Error(), "***") {
+		t.Fatalf("proxyURL() error = %q, want redacted userinfo marker", err)
+	}
+}
+
+// resetLoadState resets the package-level Load() cache for deterministic tests.
+func resetLoadState() {
+	loadOnce = sync.Once{}
+	loadCfg = nil
+	loadErr = nil
+}
+
+// TestLoad_RejectsWorldWritableConfig verifies that a world-writable proxy config
+// is rejected rather than silently trusted (it could be tampered with by other
+// local processes to redirect credential traffic).
+func TestLoad_RejectsWorldWritableConfig(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("POSIX permission semantics")
+	}
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	resetLoadState()
+	unsetProxyPluginEnv(t)
+
+	p := Path()
+	writeFile(t, p, []byte(`{"LARKSUITE_CLI_PROXY_ENABLE":true,"LARKSUITE_CLI_PROXY_ADDRESS":"http://127.0.0.1:3128"}`), 0600)
+	// Chmod (not WriteFile perm) so umask cannot strip the world-writable bit.
+	if err := os.Chmod(p, 0o666); err != nil {
+		t.Fatalf("Chmod: %v", err)
+	}
+
+	_, err := Load()
+	if err == nil {
+		t.Fatal("Load() error = nil, want unsafe-config error for world-writable file")
+	}
+	if !strings.Contains(err.Error(), "world-writable") {
+		t.Fatalf("Load() error = %q, want world-writable rejection", err)
+	}
+}
+
+// TestLoad_RejectsGroupWritableConfig verifies group-writable configs are rejected.
+func TestLoad_RejectsGroupWritableConfig(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("POSIX permission semantics")
+	}
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	resetLoadState()
+	unsetProxyPluginEnv(t)
+
+	p := Path()
+	writeFile(t, p, []byte(`{"LARKSUITE_CLI_PROXY_ENABLE":true,"LARKSUITE_CLI_PROXY_ADDRESS":"http://127.0.0.1:3128"}`), 0600)
+	if err := os.Chmod(p, 0o660); err != nil {
+		t.Fatalf("Chmod: %v", err)
+	}
+
+	_, err := Load()
+	if err == nil {
+		t.Fatal("Load() error = nil, want unsafe-config error for group-writable file")
+	}
+	if !strings.Contains(err.Error(), "group-writable") {
+		t.Fatalf("Load() error = %q, want group-writable rejection", err)
+	}
+}
+
+// TestLoad_RejectsSymlinkConfig verifies that a symlinked proxy config is rejected,
+// preventing redirection of the trusted config path to an attacker-controlled file.
+func TestLoad_RejectsSymlinkConfig(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("symlink creation is privileged on Windows")
+	}
+	dir := t.TempDir()
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", dir)
+	resetLoadState()
+	unsetProxyPluginEnv(t)
+
+	// Real file lives elsewhere; the config path is a symlink to it.
+	real := filepath.Join(dir, "real_proxy_config.json")
+	writeFile(t, real, []byte(`{"LARKSUITE_CLI_PROXY_ENABLE":true,"LARKSUITE_CLI_PROXY_ADDRESS":"http://127.0.0.1:3128"}`), 0600)
+	if err := os.Symlink(real, Path()); err != nil {
+		t.Fatalf("Symlink: %v", err)
+	}
+
+	_, err := Load()
+	if err == nil {
+		t.Fatal("Load() error = nil, want unsafe-config error for symlinked file")
+	}
+	if !strings.Contains(err.Error(), "symlink") {
+		t.Fatalf("Load() error = %q, want symlink rejection", err)
+	}
+}
+
+// TestLoad_AcceptsSecureConfig verifies the audit does not break the normal case:
+// an owner-only 0600 config still loads.
+func TestLoad_AcceptsSecureConfig(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	resetLoadState()
+	unsetProxyPluginEnv(t)
+
+	writeFile(t, Path(), []byte(`{"LARKSUITE_CLI_PROXY_ENABLE":true,"LARKSUITE_CLI_PROXY_ADDRESS":"http://127.0.0.1:3128"}`), 0600)
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v, want nil for secure 0600 config", err)
+	}
+	if cfg == nil || !cfg.Enabled() {
+		t.Fatalf("cfg.Enabled() = %v, want true", cfg)
+	}
+}

internal/transport/shared.go

@@ -0,0 +1,83 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"net/http"
+	"os"
+	"sync"
+	"time"
+)
+
+// Shared returns the base http.RoundTripper for all CLI HTTP clients.
+//
+// Precedence (highest first):
+//  1. proxy-plugin mode — force traffic through a fixed loopback proxy;
+//     FAIL-CLOSED when the plugin config exists but is invalid.
+//  2. LARK_CLI_NO_PROXY — direct egress, proxy disabled.
+//  3. http.DefaultTransport — the stdlib process-wide singleton (honors
+//     HTTP(S)_PROXY), so every client shares one connection pool / TLS cache.
+//
+// The returned RoundTripper MUST NOT be mutated. Callers that need a customized
+// transport should assert to *http.Transport and Clone() it. A shared base is
+// required so persistConn read/write goroutines are reused; cloning per call
+// leaks them until IdleConnTimeout (~90s) fires.
+func Shared() http.RoundTripper {
+	// Proxy-plugin mode overrides everything, INCLUDING LARK_CLI_NO_PROXY. When
+	// the plugin config exists but is invalid, pluginTransport returns a
+	// fail-closed transport with ok=true and we return it here — we MUST NOT
+	// fall through to the NO_PROXY / DefaultTransport direct-egress paths below.
+	if t, ok := pluginTransport(); ok {
+		return t
+	}
+	if os.Getenv(EnvNoProxy) != "" {
+		return noProxyTransport()
+	}
+	return http.DefaultTransport
+}
+
+// Fallback returns a shared *http.Transport. It is a thin wrapper over Shared
+// retained so modules already on the leak-free singleton path (internal/auth,
+// internal/cmdutil transport decorators) do not have to migrate. New code
+// should prefer Shared and treat the base as an http.RoundTripper.
+//
+// Fail-closed invariant: pluginTransport always expresses its blocked transport
+// as a concrete *http.Transport (see failClosedTransport), so the assertion
+// below preserves the block. The noProxyTransport() fallback is therefore only
+// reached when no proxy plugin is configured and some external code replaced
+// http.DefaultTransport with a non-*http.Transport — a case with no fail-closed
+// intent, where a proxy-disabled transport is acceptable.
+func Fallback() *http.Transport {
+	if t, ok := Shared().(*http.Transport); ok {
+		return t
+	}
+	return noProxyTransport()
+}
+
+// NewHTTPClient returns an *http.Client whose Transport is the shared,
+// proxy-plugin-aware base (see Shared). Prefer this over a bare &http.Client{}
+// for outbound requests: a bare client falls back to http.DefaultTransport and
+// therefore silently bypasses proxy plugin mode (fixed proxy + trusted CA, or
+// fail-closed), creating an audit blind spot.
+//
+// A zero timeout means no client-level timeout (callers relying on context
+// deadlines pass 0).
+func NewHTTPClient(timeout time.Duration) *http.Client {
+	return &http.Client{
+		Transport: Shared(),
+		Timeout:   timeout,
+	}
+}
+
+// noProxyTransport is a proxy-disabled clone of http.DefaultTransport, lazily
+// built the first time LARK_CLI_NO_PROXY is observed set.
+var noProxyTransport = sync.OnceValue(func() *http.Transport {
+	def, ok := http.DefaultTransport.(*http.Transport)
+	if !ok {
+		return &http.Transport{}
+	}
+	t := def.Clone()
+	t.Proxy = nil
+	return t
+})

internal/transport/shared_test.go

@@ -0,0 +1,156 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"net/http"
+	"net/url"
+	"testing"
+	"time"
+)
+
+// TestShared_DefaultReturnsStdlibSingleton verifies the default shared transport.
+func TestShared_DefaultReturnsStdlibSingleton(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	t.Setenv(EnvNoProxy, "")
+	if Shared() != http.DefaultTransport {
+		t.Error("Shared should return http.DefaultTransport when LARK_CLI_NO_PROXY is unset")
+	}
+}
+
+// TestShared_NoProxyReturnsClone verifies that disabling proxying returns a cloned transport.
+func TestShared_NoProxyReturnsClone(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	t.Setenv(EnvNoProxy, "1")
+	tr := Shared()
+	if tr == http.DefaultTransport {
+		t.Fatal("Shared should return a clone, not DefaultTransport, when LARK_CLI_NO_PROXY is set")
+	}
+	ht, ok := tr.(*http.Transport)
+	if !ok {
+		t.Fatalf("expected *http.Transport, got %T", tr)
+	}
+	if ht.Proxy != nil {
+		t.Error("no-proxy transport should have Proxy == nil")
+	}
+}
+
+// TestShared_NoProxyIsCachedSingleton verifies singleton caching for the no-proxy transport.
+func TestShared_NoProxyIsCachedSingleton(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	t.Setenv(EnvNoProxy, "1")
+	if Shared() != Shared() {
+		t.Error("repeated Shared calls with LARK_CLI_NO_PROXY set must return the same instance")
+	}
+}
+
+// TestShared_EnvUnsetAfterSetFallsBackToDefault verifies fallback to the stdlib
+// transport after unsetting LARK_CLI_NO_PROXY.
+func TestShared_EnvUnsetAfterSetFallsBackToDefault(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	// Simulate a process that first runs with LARK_CLI_NO_PROXY=1 (populating
+	// the no-proxy singleton), then unsets it. Subsequent calls must return
+	// http.DefaultTransport, NOT the cached no-proxy clone.
+	t.Setenv(EnvNoProxy, "1")
+	if Shared() == http.DefaultTransport {
+		t.Fatal("precondition: first call with env set should not return DefaultTransport")
+	}
+
+	t.Setenv(EnvNoProxy, "")
+	if after := Shared(); after != http.DefaultTransport {
+		t.Errorf("after unsetting LARK_CLI_NO_PROXY, Shared must return http.DefaultTransport, got %T", after)
+	}
+}
+
+// TestShared_NoProxyOverridesSystemProxy verifies that LARK_CLI_NO_PROXY disables system proxies.
+func TestShared_NoProxyOverridesSystemProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	t.Setenv("HTTPS_PROXY", "http://should-be-ignored:8888")
+	t.Setenv(EnvNoProxy, "1")
+
+	ht, ok := Shared().(*http.Transport)
+	if !ok {
+		t.Fatalf("expected *http.Transport, got %T", Shared())
+	}
+	if ht.Proxy != nil {
+		t.Error("LARK_CLI_NO_PROXY should override system proxy settings")
+	}
+}
+
+// TestNewHTTPClient verifies the factory wires the shared proxy-plugin-aware
+// transport (instead of a bare client that bypasses proxy plugin mode).
+func TestNewHTTPClient(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	t.Setenv(EnvNoProxy, "")
+
+	c := NewHTTPClient(7 * time.Second)
+	if c.Transport == nil {
+		t.Fatal("NewHTTPClient transport is nil; want shared transport")
+	}
+	if c.Transport != Shared() {
+		t.Errorf("NewHTTPClient transport = %v, want Shared()", c.Transport)
+	}
+	if c.Timeout != 7*time.Second {
+		t.Errorf("NewHTTPClient timeout = %v, want 7s", c.Timeout)
+	}
+}
+
+// TestShared_PluginOverridesNoProxy locks the contract that proxy-plugin mode wins
+// over LARK_CLI_NO_PROXY: even with NO_PROXY set, an enabled plugin forces the proxy.
+func TestShared_PluginOverridesNoProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	t.Setenv(EnvNoProxy, "1") // NO_PROXY set, but the plugin must win
+	resetProxyPluginState()
+
+	writeFile(t, Path(), []byte(`{
+  "LARKSUITE_CLI_PROXY_ENABLE": true,
+  "LARKSUITE_CLI_PROXY_ADDRESS": "http://127.0.0.1:3128"
+}`), 0600)
+
+	tr, ok := Shared().(*http.Transport)
+	if !ok {
+		t.Fatalf("Shared() = %T, want proxy *http.Transport, not the NO_PROXY clone", tr)
+	}
+	u, err := tr.Proxy(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err != nil || u == nil || u.String() != "http://127.0.0.1:3128" {
+		t.Fatalf("Proxy() = %v, %v; plugin must override NO_PROXY with the fixed proxy", u, err)
+	}
+}
+
+// TestShared_MalformedConfigFailsClosedEvenWithNoProxy locks the most dangerous
+// invariant of the fold: a malformed proxy_config.json must FAIL CLOSED, never
+// fall through to direct egress — not even to the LARK_CLI_NO_PROXY clone.
+func TestShared_MalformedConfigFailsClosedEvenWithNoProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	t.Setenv(EnvNoProxy, "1")
+	resetProxyPluginState()
+
+	writeFile(t, Path(), []byte(`{`), 0600) // malformed
+
+	rt := Shared()
+	if rt == http.DefaultTransport {
+		t.Fatal("malformed config returned http.DefaultTransport — fail OPEN")
+	}
+	if rt == noProxyTransport() {
+		t.Fatal("malformed config fell through to the NO_PROXY direct-egress clone — fail OPEN")
+	}
+	resp, err := rt.RoundTrip(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err == nil {
+		t.Fatalf("RoundTrip() err = nil (resp=%v); malformed config must fail closed", resp)
+	}
+}

internal/transport/tls_ca.go

@@ -0,0 +1,68 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"fmt"
+	"net/http"
+	"path/filepath"
+	"strings"
+
+	"github.com/larksuite/cli/internal/binding"
+	"github.com/larksuite/cli/internal/envvars"
+	"github.com/larksuite/cli/internal/vfs"
+)
+
+// applyExtraRootCA augments t with an additional PEM bundle used for configured proxy
+// TLS interception.
+func applyExtraRootCA(t *http.Transport, caPath string) error {
+	caPath = strings.TrimSpace(caPath)
+	if caPath == "" {
+		return nil
+	}
+	if !filepath.IsAbs(caPath) {
+		return fmt.Errorf("invalid %s %q: must be an absolute path to a PEM file", envvars.CliCAPath, caPath)
+	}
+	safeCAPath, err := binding.AssertSecurePath(binding.AuditParams{
+		TargetPath:            caPath,
+		Label:                 envvars.CliCAPath,
+		AllowReadableByOthers: true,
+	})
+	if err != nil {
+		return fmt.Errorf("unsafe %s %q: %w", envvars.CliCAPath, caPath, err)
+	}
+	pemBytes, err := vfs.ReadFile(safeCAPath)
+	if err != nil {
+		return fmt.Errorf("failed to read %s %q: %w", envvars.CliCAPath, caPath, err)
+	}
+
+	// Augment the system trust store. Do NOT silently discard a SystemCertPool
+	// error: falling back to an empty pool would make this transport trust ONLY
+	// the extra CA (dropping all system roots), which narrows trust unexpectedly
+	// and could break TLS to legitimate endpoints. Fail closed instead.
+	pool, err := x509.SystemCertPool()
+	if err != nil {
+		return fmt.Errorf("failed to load system cert pool for %s: %w", envvars.CliCAPath, err)
+	}
+	if pool == nil {
+		pool = x509.NewCertPool()
+	}
+	if ok := pool.AppendCertsFromPEM(pemBytes); !ok {
+		return fmt.Errorf("invalid %s %q: no certificates parsed from PEM", envvars.CliCAPath, caPath)
+	}
+
+	if t.TLSClientConfig == nil {
+		t.TLSClientConfig = &tls.Config{}
+	} else {
+		// Clone to avoid mutating shared config from the base transport.
+		t.TLSClientConfig = t.TLSClientConfig.Clone()
+	}
+	if t.TLSClientConfig.MinVersion == 0 || t.TLSClientConfig.MinVersion < tls.VersionTLS12 {
+		t.TLSClientConfig.MinVersion = tls.VersionTLS12
+	}
+	t.TLSClientConfig.RootCAs = pool
+	return nil
+}

internal/transport/tls_ca_test.go

@@ -0,0 +1,173 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"math/big"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+// mustCreateTestCertPEM generates a short-lived self-signed CA certificate for tests.
+func mustCreateTestCertPEM(t *testing.T) []byte {
+	t.Helper()
+
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatalf("GenerateKey() error = %v", err)
+	}
+
+	der, err := x509.CreateCertificate(rand.Reader, &x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			CommonName: "proxyplugin-test-ca",
+		},
+		NotBefore:             time.Now().Add(-time.Hour),
+		NotAfter:              time.Now().Add(time.Hour),
+		KeyUsage:              x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
+		IsCA:                  true,
+		BasicConstraintsValid: true,
+	}, &x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			CommonName: "proxyplugin-test-ca",
+		},
+		NotBefore:             time.Now().Add(-time.Hour),
+		NotAfter:              time.Now().Add(time.Hour),
+		KeyUsage:              x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
+		IsCA:                  true,
+		BasicConstraintsValid: true,
+	}, &key.PublicKey, key)
+	if err != nil {
+		t.Fatalf("CreateCertificate() error = %v", err)
+	}
+
+	return pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: der})
+}
+
+// TestApplyExtraRootCA_EmptyPathIsNoop verifies that an empty CA path leaves the transport unchanged.
+func TestApplyExtraRootCA_EmptyPathIsNoop(t *testing.T) {
+	tr := &http.Transport{}
+
+	if err := applyExtraRootCA(tr, "   "); err != nil {
+		t.Fatalf("applyExtraRootCA() error = %v", err)
+	}
+	if tr.TLSClientConfig != nil {
+		t.Fatalf("TLSClientConfig = %#v, want nil", tr.TLSClientConfig)
+	}
+}
+
+// TestApplyExtraRootCA_RejectsRelativePath verifies that CA paths must be absolute.
+func TestApplyExtraRootCA_RejectsRelativePath(t *testing.T) {
+	tr := &http.Transport{}
+
+	err := applyExtraRootCA(tr, "ca.pem")
+	if err == nil || !strings.Contains(err.Error(), "must be an absolute path") {
+		t.Fatalf("applyExtraRootCA() error = %v, want absolute-path error", err)
+	}
+}
+
+// TestApplyExtraRootCA_RejectsMissingFile verifies missing PEM bundles fail before file reads.
+func TestApplyExtraRootCA_RejectsMissingFile(t *testing.T) {
+	tr := &http.Transport{}
+
+	err := applyExtraRootCA(tr, filepath.Join(t.TempDir(), "missing.pem"))
+	if err == nil || !strings.Contains(err.Error(), "unsafe") {
+		t.Fatalf("applyExtraRootCA() error = %v, want unsafe path error", err)
+	}
+}
+
+// TestApplyExtraRootCA_RejectsInvalidPEM verifies validation of malformed PEM bundles.
+func TestApplyExtraRootCA_RejectsInvalidPEM(t *testing.T) {
+	caPath := filepath.Join(t.TempDir(), "invalid.pem")
+	writeFile(t, caPath, []byte("not a pem"), 0600)
+
+	tr := &http.Transport{}
+	err := applyExtraRootCA(tr, caPath)
+	if err == nil || !strings.Contains(err.Error(), "no certificates parsed from PEM") {
+		t.Fatalf("applyExtraRootCA() error = %v, want invalid PEM error", err)
+	}
+}
+
+// TestApplyExtraRootCA_RejectsInsecureCAPath verifies CA paths are safety-checked
+// before reading the configured file.
+func TestApplyExtraRootCA_RejectsInsecureCAPath(t *testing.T) {
+	caPath := filepath.Join(t.TempDir(), "ca.pem")
+	writeFile(t, caPath, mustCreateTestCertPEM(t), 0600)
+	if err := os.Chmod(caPath, 0666); err != nil {
+		t.Fatalf("Chmod() error = %v", err)
+	}
+
+	tr := &http.Transport{}
+	err := applyExtraRootCA(tr, caPath)
+	if err == nil || !strings.Contains(err.Error(), "unsafe") {
+		t.Fatalf("applyExtraRootCA() error = %v, want unsafe path error", err)
+	}
+	if tr.TLSClientConfig != nil {
+		t.Fatalf("TLSClientConfig = %#v, want nil", tr.TLSClientConfig)
+	}
+}
+
+// TestApplyExtraRootCA_SetsTLSConfigWhenMissing verifies initialization of TLSClientConfig when absent.
+func TestApplyExtraRootCA_SetsTLSConfigWhenMissing(t *testing.T) {
+	caPath := filepath.Join(t.TempDir(), "ca.pem")
+	writeFile(t, caPath, mustCreateTestCertPEM(t), 0600)
+
+	tr := &http.Transport{}
+	if err := applyExtraRootCA(tr, caPath); err != nil {
+		t.Fatalf("applyExtraRootCA() error = %v", err)
+	}
+	if tr.TLSClientConfig == nil {
+		t.Fatal("TLSClientConfig = nil, want initialized config")
+	}
+	if tr.TLSClientConfig.RootCAs == nil {
+		t.Fatal("RootCAs = nil, want cert pool")
+	}
+}
+
+// TestApplyExtraRootCA_ClonesExistingTLSConfig verifies cloning when the base transport already has TLS settings.
+func TestApplyExtraRootCA_ClonesExistingTLSConfig(t *testing.T) {
+	caPath := filepath.Join(t.TempDir(), "ca.pem")
+	writeFile(t, caPath, mustCreateTestCertPEM(t), 0600)
+
+	original := &tls.Config{ServerName: "open.feishu.cn"}
+	tr := &http.Transport{TLSClientConfig: original}
+	if err := applyExtraRootCA(tr, caPath); err != nil {
+		t.Fatalf("applyExtraRootCA() error = %v", err)
+	}
+	if tr.TLSClientConfig == original {
+		t.Fatal("TLSClientConfig pointer reused, want clone")
+	}
+	if tr.TLSClientConfig.ServerName != original.ServerName {
+		t.Fatalf("ServerName = %q, want %q", tr.TLSClientConfig.ServerName, original.ServerName)
+	}
+	if tr.TLSClientConfig.RootCAs == nil {
+		t.Fatal("RootCAs = nil, want cert pool")
+	}
+}
+
+// TestApplyExtraRootCA_PreservesHigherTLSMinVersion verifies that adding a CA
+// does not relax an existing stricter TLS version floor.
+func TestApplyExtraRootCA_PreservesHigherTLSMinVersion(t *testing.T) {
+	caPath := filepath.Join(t.TempDir(), "ca.pem")
+	writeFile(t, caPath, mustCreateTestCertPEM(t), 0600)
+
+	tr := &http.Transport{TLSClientConfig: &tls.Config{MinVersion: tls.VersionTLS13}}
+	if err := applyExtraRootCA(tr, caPath); err != nil {
+		t.Fatalf("applyExtraRootCA() error = %v", err)
+	}
+	if tr.TLSClientConfig.MinVersion != tls.VersionTLS13 {
+		t.Fatalf("MinVersion = %x, want %x", tr.TLSClientConfig.MinVersion, tls.VersionTLS13)
+	}
+}

internal/transport/transport.go

@@ -0,0 +1,90 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"sync"
+)
+
+// proxyPluginTransport is a fixed-proxy clone of http.DefaultTransport (with optional
+// custom root CA), lazily built on first use when proxy plugin mode is enabled.
+var proxyPluginTransport = sync.OnceValue(buildProxyPluginTransport)
+
+// cachedBlockedTransport is a fail-closed transport cached on first use when
+// the proxy plugin config exists but is invalid. This avoids cloning
+// http.DefaultTransport on every pluginTransport call.
+var cachedBlockedTransport = sync.OnceValue(buildBlockedTransport)
+
+func buildBlockedTransport() http.RoundTripper {
+	return failClosedTransport(fmt.Errorf("proxy plugin config is invalid: %w", loadErr))
+}
+
+func buildProxyPluginTransport() http.RoundTripper {
+	def, ok := http.DefaultTransport.(*http.Transport)
+	if !ok {
+		// Cannot clone the stdlib transport. Fail closed with a concrete
+		// *http.Transport (not a bare RoundTripper) so downcasting callers such
+		// as Fallback cannot silently degrade this into a
+		// direct-egress transport.
+		return failClosedTransport(fmt.Errorf("proxy plugin transport unavailable: http.DefaultTransport is %T, want *http.Transport", http.DefaultTransport))
+	}
+
+	cfg, err := Load()
+	if err != nil {
+		// Fail closed: config file exists but is malformed/unreadable — do not
+		// silently fall back to direct egress.
+		return blockedTransport(def, fmt.Errorf("proxy plugin config is invalid: %w", err))
+	}
+	if cfg == nil || !cfg.Enabled() {
+		return def
+	}
+	t, err := cfg.ApplyToTransport(def)
+	if err != nil {
+		// Fail closed: do not silently fall back to direct egress when the
+		// operator explicitly enabled proxy plugin mode.
+		return blockedTransport(def, fmt.Errorf("proxy plugin enabled but config is invalid: %w", err))
+	}
+	return t
+}
+
+// pluginTransport returns the proxy plugin transport when proxy plugin mode is
+// configured. The bool return is false when the plugin is not configured or not enabled.
+func pluginTransport() (http.RoundTripper, bool) {
+	cfg, err := Load()
+	if err != nil {
+		return cachedBlockedTransport(), true
+	}
+	if cfg == nil || !cfg.Enabled() {
+		return nil, false
+	}
+	return proxyPluginTransport(), true
+}
+
+// failClosedTransport returns a *http.Transport that always fails RoundTrip with
+// err. It clones http.DefaultTransport when possible (preserving dial/timeout
+// tuning); otherwise it builds a minimal transport. Returning a concrete
+// *http.Transport (rather than a bare RoundTripper) is required so downcasting
+// callers such as Fallback cannot silently degrade a fail-closed
+// signal into a direct-egress transport.
+func failClosedTransport(err error) *http.Transport {
+	if def, ok := http.DefaultTransport.(*http.Transport); ok {
+		return blockedTransport(def, err)
+	}
+	return &http.Transport{
+		Proxy: func(*http.Request) (*url.URL, error) {
+			return nil, err
+		},
+	}
+}
+
+func blockedTransport(base *http.Transport, err error) *http.Transport {
+	blocked := base.Clone()
+	blocked.Proxy = func(*http.Request) (*url.URL, error) {
+		return nil, err
+	}
+	return blocked
+}

internal/transport/transport_test.go

@@ -0,0 +1,195 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"sync"
+	"testing"
+)
+
+func resetProxyPluginState() {
+	loadOnce = sync.Once{}
+	loadCfg = nil
+	loadErr = nil
+	proxyPluginTransport = sync.OnceValue(buildProxyPluginTransport)
+	cachedBlockedTransport = sync.OnceValue(buildBlockedTransport)
+}
+
+func TestPluginTransport_NotConfigured(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+
+	tr, ok := pluginTransport()
+	if ok {
+		t.Fatalf("pluginTransport() ok = true, want false")
+	}
+	if tr != nil {
+		t.Fatalf("pluginTransport() transport = %T, want nil", tr)
+	}
+}
+
+func TestPluginTransport_EnabledReturnsFixedProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+
+	cfgPath := Path()
+	writeFile(t, cfgPath, []byte(`{
+  "LARKSUITE_CLI_PROXY_ENABLE": true,
+  "LARKSUITE_CLI_PROXY_ADDRESS": "http://127.0.0.1:3128",
+  "LARKSUITE_CLI_CA_PATH": ""
+}`), 0600)
+
+	rt, ok := pluginTransport()
+	if !ok {
+		t.Fatal("pluginTransport() ok = false, want true")
+	}
+	tr, ok := rt.(*http.Transport)
+	if !ok {
+		t.Fatalf("pluginTransport() = %T, want *http.Transport", rt)
+	}
+	u, err := tr.Proxy(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err != nil {
+		t.Fatalf("Proxy() error = %v", err)
+	}
+	if u == nil || u.String() != "http://127.0.0.1:3128" {
+		t.Fatalf("Proxy() = %v, want http://127.0.0.1:3128", u)
+	}
+}
+
+func TestPluginTransport_InvalidConfigWithNonTransportDefaultFailsClosed(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	restoreDefaultTransport := replaceDefaultTransport(okRoundTripper{})
+	defer restoreDefaultTransport()
+
+	writeFile(t, Path(), []byte(`{`), 0600)
+
+	rt, ok := pluginTransport()
+	if !ok {
+		t.Fatal("pluginTransport() ok = false, want true")
+	}
+	if rt == http.DefaultTransport {
+		t.Fatalf("pluginTransport() returned http.DefaultTransport, want fail-closed transport")
+	}
+	resp, err := rt.RoundTrip(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err == nil {
+		t.Fatalf("RoundTrip() error = nil, response = %#v; want fail-closed error", resp)
+	}
+	if resp != nil {
+		t.Fatalf("RoundTrip() response = %#v, want nil", resp)
+	}
+}
+
+func TestPluginTransport_InvalidConfigReturnsCachedInstance(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+
+	writeFile(t, Path(), []byte(`{`), 0600)
+
+	a, ok := pluginTransport()
+	if !ok {
+		t.Fatal("pluginTransport() ok = false, want true")
+	}
+	b, ok := pluginTransport()
+	if !ok {
+		t.Fatal("pluginTransport() ok = false, want true")
+	}
+	if a != b {
+		t.Fatalf("pluginTransport() returned different instances on repeated calls; blocked transport must be cached")
+	}
+}
+
+func TestBuildProxyPluginTransport_InvalidConfigFailsClosed(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+
+	writeFile(t, Path(), []byte(`{`), 0600)
+
+	rt := buildProxyPluginTransport()
+	if rt == http.DefaultTransport {
+		t.Fatalf("buildProxyPluginTransport() returned http.DefaultTransport, want fail-closed transport")
+	}
+	resp, err := rt.RoundTrip(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err == nil {
+		t.Fatalf("RoundTrip() error = nil, response = %#v; want fail-closed error", resp)
+	}
+	if resp != nil {
+		t.Fatalf("RoundTrip() response = %#v, want nil", resp)
+	}
+}
+
+func TestBuildProxyPluginTransport_NonTransportDefaultFailsClosed(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	restoreDefaultTransport := replaceDefaultTransport(okRoundTripper{})
+	defer restoreDefaultTransport()
+
+	rt := buildProxyPluginTransport()
+	if rt == http.DefaultTransport {
+		t.Fatalf("buildProxyPluginTransport() returned http.DefaultTransport, want fail-closed transport")
+	}
+	resp, err := rt.RoundTrip(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err == nil {
+		t.Fatalf("RoundTrip() error = nil, response = %#v; want fail-closed error", resp)
+	}
+	if resp != nil {
+		t.Fatalf("RoundTrip() response = %#v, want nil", resp)
+	}
+}
+
+// TestPluginTransport_InvalidConfigBlockerIsConcreteTransport guards the
+// fail-closed invariant that Fallback relies on: even when
+// http.DefaultTransport is not an *http.Transport, an invalid proxy config must
+// produce a blocked transport that is itself a concrete *http.Transport. If it
+// were a bare RoundTripper, Fallback would downcast-fail and
+// silently degrade it into a direct-egress transport.
+func TestPluginTransport_InvalidConfigBlockerIsConcreteTransport(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	restoreDefaultTransport := replaceDefaultTransport(okRoundTripper{})
+	defer restoreDefaultTransport()
+
+	writeFile(t, Path(), []byte(`{`), 0600)
+
+	rt, ok := pluginTransport()
+	if !ok {
+		t.Fatal("pluginTransport() ok = false, want true")
+	}
+	if _, isTransport := rt.(*http.Transport); !isTransport {
+		t.Fatalf("pluginTransport() blocked transport = %T, want *http.Transport so Fallback cannot degrade it to direct egress", rt)
+	}
+	// Must remain fail-closed.
+	resp, err := rt.RoundTrip(&http.Request{URL: &url.URL{Scheme: "https", Host: "open.feishu.cn"}})
+	if err == nil {
+		t.Fatalf("RoundTrip() error = nil, response = %#v; want fail-closed error", resp)
+	}
+	if resp != nil {
+		t.Fatalf("RoundTrip() response = %#v, want nil", resp)
+	}
+}
+
+type okRoundTripper struct{}
+
+func (okRoundTripper) RoundTrip(*http.Request) (*http.Response, error) {
+	return &http.Response{StatusCode: http.StatusOK, Body: io.NopCloser(strings.NewReader(""))}, nil
+}
+
+func replaceDefaultTransport(rt http.RoundTripper) func() {
+	original := http.DefaultTransport
+	http.DefaultTransport = rt
+	return func() {
+		http.DefaultTransport = original
+	}
+}

internal/transport/warn.go

@@ -0,0 +1,115 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"fmt"
+	"io"
+	"net/url"
+	"os"
+	"strings"
+	"sync"
+
+	"github.com/larksuite/cli/internal/envvars"
+)
+
+// Proxy environment constants control shared transport proxy behavior.
+const (
+	// EnvNoProxy disables automatic proxy support when set to any non-empty value.
+	EnvNoProxy = "LARK_CLI_NO_PROXY"
+)
+
+// proxyEnvKeys lists environment variables that Go's ProxyFromEnvironment reads.
+var proxyEnvKeys = []string{
+	"HTTPS_PROXY", "https_proxy",
+	"HTTP_PROXY", "http_proxy",
+	"ALL_PROXY", "all_proxy",
+}
+
+// DetectProxyEnv returns the first proxy-related environment variable that is set,
+// or empty strings if none are configured.
+func DetectProxyEnv() (key, value string) {
+	for _, k := range proxyEnvKeys {
+		if v := os.Getenv(k); v != "" {
+			return k, v
+		}
+	}
+	return "", ""
+}
+
+// proxyWarningOnce ensures proxy environment warnings are emitted at most once.
+var proxyWarningOnce sync.Once
+
+// proxyPluginStatus reports the configured proxy plugin address, the extra
+// trusted CA path (if any), and whether proxy plugin mode is enabled. It is
+// indirected through a package variable so tests can simulate plugin-enabled
+// mode without the process-global Load() sync.Once cache.
+var proxyPluginStatus = func() (addr, caPath string, enabled bool) {
+	cfg, err := Load()
+	if err != nil || !cfg.Enabled() {
+		return "", "", false
+	}
+	return cfg.Proxy, cfg.CAPath, true
+}
+
+// redactProxyURL masks userinfo (username:password) in a proxy URL.
+// Handles both scheme-prefixed ("http://user:pass@host") and bare ("user:pass@host") formats.
+func redactProxyURL(raw string) string {
+	// Try standard url.Parse first (works when scheme is present)
+	u, err := url.Parse(raw)
+	if err == nil && u.User != nil {
+		return u.Scheme + "://***@" + u.Host + u.RequestURI()
+	}
+
+	// Fallback: handle bare URLs without scheme (e.g. "user:pass@proxy:8080")
+	if at := strings.LastIndex(raw, "@"); at > 0 {
+		return "***@" + raw[at+1:]
+	}
+
+	return raw
+}
+
+// WarnIfProxied prints a one-time warning to w when a proxy environment variable
+// is detected and proxy is not disabled via LARK_CLI_NO_PROXY. Proxy credentials
+// are redacted. Safe to call multiple times; only the first call prints.
+//
+// The warning is suppressed entirely when interactive is false — i.e. stdin is
+// not a TTY, which is the case for agent / CI / piped invocations. Those callers
+// frequently parse the CLI's stdout as JSON and merge streams with `2>&1`; a
+// stray stderr warning then corrupts the parsed payload. Suppressing in the
+// non-interactive case keeps machine-consumed output clean, while human
+// interactive sessions still get the security notice. Passing interactive=false
+// does not consume the once guard, so a later interactive call can still warn.
+func WarnIfProxied(w io.Writer, interactive bool) {
+	if !interactive {
+		return
+	}
+	proxyWarningOnce.Do(func() {
+		// Proxy plugin mode overrides env proxies and LARK_CLI_NO_PROXY (see
+		// Shared), so its warning and disable instructions take precedence.
+		// Emitting the env-proxy warning here would be misleading: it tells the
+		// user to set LARK_CLI_NO_PROXY=1, which does NOT disable the plugin proxy.
+		if addr, caPath, enabled := proxyPluginStatus(); enabled {
+			fmt.Fprintf(w, "[lark-cli] [WARN] proxy plugin enabled: all requests (including credentials) are forced through %s. To disable, set %s=false or remove %s.\n",
+				redactProxyURL(addr), envvars.CliProxyEnable, Path())
+			if strings.TrimSpace(caPath) != "" {
+				// A custom CA means upstream TLS can be intercepted/inspected by
+				// the proxy (MITM). Surface it so the operator is aware traffic
+				// (including Bearer tokens) is decryptable on this host.
+				fmt.Fprintf(w, "[lark-cli] [WARN] proxy plugin trusts a custom CA (%s); TLS to upstreams can be intercepted/inspected by this proxy.\n",
+					caPath)
+			}
+			return
+		}
+		if os.Getenv(EnvNoProxy) != "" {
+			return
+		}
+		key, val := DetectProxyEnv()
+		if key == "" {
+			return
+		}
+		fmt.Fprintf(w, "[lark-cli] [WARN] proxy detected: %s=%s — requests (including credentials) will transit through this proxy. Set %s=1 to disable proxy.\n",
+			key, redactProxyURL(val), EnvNoProxy)
+	})
+}

internal/transport/warn_test.go

@@ -0,0 +1,275 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"bytes"
+	"strings"
+	"sync"
+	"testing"
+
+	"github.com/larksuite/cli/internal/envvars"
+)
+
+// TestDetectProxyEnv verifies proxy environment detection priority and empty-state behavior.
+func TestDetectProxyEnv(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+
+	// Clear all proxy env vars first
+	for _, k := range proxyEnvKeys {
+		t.Setenv(k, "")
+	}
+
+	key, val := DetectProxyEnv()
+	if key != "" || val != "" {
+		t.Errorf("expected no proxy, got %s=%s", key, val)
+	}
+
+	t.Setenv("HTTPS_PROXY", "http://proxy:8888")
+	key, val = DetectProxyEnv()
+	if key != "HTTPS_PROXY" || val != "http://proxy:8888" {
+		t.Errorf("expected HTTPS_PROXY=http://proxy:8888, got %s=%s", key, val)
+	}
+}
+
+// TestWarnIfProxied_WithProxy verifies that proxy detection emits a warning.
+func TestWarnIfProxied_WithProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	proxyWarningOnce = sync.Once{}
+
+	t.Setenv("HTTPS_PROXY", "http://corp-proxy:3128")
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+
+	out := buf.String()
+	if out == "" {
+		t.Error("expected warning output when proxy is set")
+	}
+	if !bytes.Contains([]byte(out), []byte("HTTPS_PROXY")) {
+		t.Errorf("warning should mention HTTPS_PROXY, got: %s", out)
+	}
+	if !bytes.Contains([]byte(out), []byte(EnvNoProxy)) {
+		t.Errorf("warning should mention %s, got: %s", EnvNoProxy, out)
+	}
+}
+
+// TestWarnIfProxied_WithoutProxy verifies that no warning is emitted without proxy settings.
+func TestWarnIfProxied_WithoutProxy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	proxyWarningOnce = sync.Once{}
+
+	for _, k := range proxyEnvKeys {
+		t.Setenv(k, "")
+	}
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+
+	if buf.Len() != 0 {
+		t.Errorf("expected no output when no proxy is set, got: %s", buf.String())
+	}
+}
+
+func TestWarnIfProxied_SilentWhenNonInteractive(t *testing.T) {
+	proxyWarningOnce = sync.Once{}
+
+	// Non-interactive (interactive=false) mirrors agent / CI / piped invocations
+	// where stdin is not a TTY. The proxy warning must be suppressed so callers
+	// that parse stdout as JSON — often merging streams with `2>&1` — are not
+	// corrupted by a stray stderr line.
+	t.Setenv("HTTPS_PROXY", "http://corp-proxy:3128")
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, false)
+
+	if buf.Len() != 0 {
+		t.Errorf("expected no warning in non-interactive mode, got: %s", buf.String())
+	}
+}
+
+// TestWarnIfProxied_SilentWhenDisabled verifies that LARK_CLI_NO_PROXY suppresses warnings.
+func TestWarnIfProxied_SilentWhenDisabled(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	proxyWarningOnce = sync.Once{}
+
+	t.Setenv("HTTPS_PROXY", "http://proxy:8080")
+	t.Setenv(EnvNoProxy, "1")
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+
+	if buf.Len() != 0 {
+		t.Errorf("expected no warning when proxy is disabled, got: %s", buf.String())
+	}
+}
+
+// TestWarnIfProxied_OnlyOnce verifies that proxy warnings are emitted only once.
+func TestWarnIfProxied_OnlyOnce(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	proxyWarningOnce = sync.Once{}
+
+	t.Setenv("HTTP_PROXY", "http://proxy:1234")
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+	first := buf.String()
+
+	WarnIfProxied(&buf, true)
+	second := buf.String()
+
+	if first == "" {
+		t.Error("expected warning on first call")
+	}
+	if second != first {
+		t.Error("expected no additional output on second call")
+	}
+}
+
+// TestWarnIfProxied_ProxyPluginEnabled verifies that when proxy plugin mode is
+// enabled, the warning describes the plugin proxy and the correct disable method
+// (LARKSUITE_CLI_PROXY_ENABLE=false) instead of the misleading LARK_CLI_NO_PROXY
+// instruction — even when env proxy and LARK_CLI_NO_PROXY are also set.
+func TestWarnIfProxied_ProxyPluginEnabled(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	proxyWarningOnce = sync.Once{}
+
+	old := proxyPluginStatus
+	proxyPluginStatus = func() (string, string, bool) { return "http://127.0.0.1:3128", "", true }
+	t.Cleanup(func() { proxyPluginStatus = old })
+
+	// Plugin mode overrides these; the warning must still be the plugin one.
+	t.Setenv("HTTPS_PROXY", "http://corp-proxy:8080")
+	t.Setenv(EnvNoProxy, "1")
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+	out := buf.String()
+
+	if !strings.Contains(out, "127.0.0.1:3128") {
+		t.Errorf("warning should mention the plugin proxy address, got: %s", out)
+	}
+	if !strings.Contains(out, envvars.CliProxyEnable) {
+		t.Errorf("warning should mention %s as the disable method, got: %s", envvars.CliProxyEnable, out)
+	}
+	if strings.Contains(out, "Set "+EnvNoProxy+"=1") {
+		t.Errorf("warning must NOT give the misleading %s disable instruction when plugin is enabled, got: %s", EnvNoProxy, out)
+	}
+	// No custom CA configured -> no interception warning.
+	if strings.Contains(out, "custom CA") {
+		t.Errorf("warning should not mention a custom CA when none is configured, got: %s", out)
+	}
+}
+
+// TestWarnIfProxied_ProxyPluginCustomCAWarns verifies that when a custom CA is
+// trusted, the warning surfaces the TLS-interception capability.
+func TestWarnIfProxied_ProxyPluginCustomCAWarns(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	proxyWarningOnce = sync.Once{}
+
+	old := proxyPluginStatus
+	proxyPluginStatus = func() (string, string, bool) {
+		return "http://127.0.0.1:3128", "/etc/lark/extra_ca.pem", true
+	}
+	t.Cleanup(func() { proxyPluginStatus = old })
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+	out := buf.String()
+
+	if !strings.Contains(out, "custom CA") {
+		t.Errorf("warning should mention the custom CA, got: %s", out)
+	}
+	if !strings.Contains(out, "/etc/lark/extra_ca.pem") {
+		t.Errorf("warning should include the CA path, got: %s", out)
+	}
+	if !strings.Contains(out, "intercept") {
+		t.Errorf("warning should mention TLS interception, got: %s", out)
+	}
+}
+
+// TestWarnIfProxied_ProxyPluginEnabledRedactsCredentials verifies the plugin
+// warning never leaks credentials embedded in the configured proxy address.
+func TestWarnIfProxied_ProxyPluginEnabledRedactsCredentials(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	proxyWarningOnce = sync.Once{}
+
+	old := proxyPluginStatus
+	proxyPluginStatus = func() (string, string, bool) { return "http://user:s3cret@127.0.0.1:3128", "", true }
+	t.Cleanup(func() { proxyPluginStatus = old })
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+	out := buf.String()
+
+	if strings.Contains(out, "s3cret") {
+		t.Errorf("plugin warning leaked password, got: %s", out)
+	}
+	if strings.Contains(out, "user:") {
+		t.Errorf("plugin warning leaked username, got: %s", out)
+	}
+	if !strings.Contains(out, "***@127.0.0.1:3128") {
+		t.Errorf("plugin warning should contain redacted proxy URL, got: %s", out)
+	}
+}
+
+// TestRedactProxyURL verifies redaction of proxy credentials across supported formats.
+func TestRedactProxyURL(t *testing.T) {
+	tests := []struct {
+		input string
+		want  string
+	}{
+		{"http://proxy:8080", "http://proxy:8080"},
+		{"http://user:pass@proxy:8080", "http://***@proxy:8080/"},
+		{"http://user:p%40ss@proxy:8080/path", "http://***@proxy:8080/path"},
+		{"http://user@proxy:8080", "http://***@proxy:8080/"},
+		{"socks5://admin:secret@10.0.0.1:1080", "socks5://***@10.0.0.1:1080/"},
+		{"user:pass@proxy:8080", "***@proxy:8080"},
+		{"admin:s3cret@10.0.0.1:3128", "***@10.0.0.1:3128"},
+		{"not-a-url", "not-a-url"},
+		{"", ""},
+	}
+	for _, tt := range tests {
+		got := redactProxyURL(tt.input)
+		if got != tt.want {
+			t.Errorf("redactProxyURL(%q) = %q, want %q", tt.input, got, tt.want)
+		}
+	}
+}
+
+// TestWarnIfProxied_RedactsCredentials verifies that warning output never leaks credentials.
+func TestWarnIfProxied_RedactsCredentials(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	unsetProxyPluginEnv(t)
+	resetProxyPluginState()
+	proxyWarningOnce = sync.Once{}
+
+	t.Setenv("HTTPS_PROXY", "http://admin:s3cret@proxy:8080")
+
+	var buf bytes.Buffer
+	WarnIfProxied(&buf, true)
+
+	out := buf.String()
+	if bytes.Contains([]byte(out), []byte("s3cret")) {
+		t.Errorf("warning should not contain proxy password, got: %s", out)
+	}
+	if bytes.Contains([]byte(out), []byte("admin")) {
+		t.Errorf("warning should not contain proxy username, got: %s", out)
+	}
+	if !bytes.Contains([]byte(out), []byte("***@proxy:8080")) {
+		t.Errorf("warning should contain redacted proxy URL, got: %s", out)
+	}
+}

internal/update/update.go

@@ -17,7 +17,7 @@ import (
 	"time"
 
 	"github.com/larksuite/cli/internal/core"
-	"github.com/larksuite/cli/internal/util"
+	"github.com/larksuite/cli/internal/transport"
 	"github.com/larksuite/cli/internal/validate"
 	"github.com/larksuite/cli/internal/vfs"
 )
@@ -64,7 +64,7 @@ func httpClient() *http.Client {
 	}
 	return &http.Client{
 		Timeout:   fetchTimeout,
-		Transport: util.SharedTransport(),
+		Transport: transport.Shared(),
 	}
 }
 

internal/util/proxy.go

@@ -1,118 +0,0 @@
-// Copyright (c) 2026 Lark Technologies Pte. Ltd.
-// SPDX-License-Identifier: MIT
-
-package util
-
-import (
-	"fmt"
-	"io"
-	"net/http"
-	"net/url"
-	"os"
-	"strings"
-	"sync"
-)
-
-const (
-	// EnvNoProxy disables automatic proxy support when set to any non-empty value.
-	EnvNoProxy = "LARK_CLI_NO_PROXY"
-)
-
-// proxyEnvKeys lists environment variables that Go's ProxyFromEnvironment reads.
-var proxyEnvKeys = []string{
-	"HTTPS_PROXY", "https_proxy",
-	"HTTP_PROXY", "http_proxy",
-	"ALL_PROXY", "all_proxy",
-}
-
-// DetectProxyEnv returns the first proxy-related environment variable that is set,
-// or empty strings if none are configured.
-func DetectProxyEnv() (key, value string) {
-	for _, k := range proxyEnvKeys {
-		if v := os.Getenv(k); v != "" {
-			return k, v
-		}
-	}
-	return "", ""
-}
-
-var proxyWarningOnce sync.Once
-
-// redactProxyURL masks userinfo (username:password) in a proxy URL.
-// Handles both scheme-prefixed ("http://user:pass@host") and bare ("user:pass@host") formats.
-func redactProxyURL(raw string) string {
-	// Try standard url.Parse first (works when scheme is present)
-	u, err := url.Parse(raw)
-	if err == nil && u.User != nil {
-		return u.Scheme + "://***@" + u.Host + u.RequestURI()
-	}
-
-	// Fallback: handle bare URLs without scheme (e.g. "user:pass@proxy:8080")
-	if at := strings.LastIndex(raw, "@"); at > 0 {
-		return "***@" + raw[at+1:]
-	}
-
-	return raw
-}
-
-// WarnIfProxied prints a one-time warning to w when a proxy environment variable
-// is detected and proxy is not disabled via LARK_CLI_NO_PROXY. Proxy credentials
-// are redacted. Safe to call multiple times; only the first call prints.
-func WarnIfProxied(w io.Writer) {
-	proxyWarningOnce.Do(func() {
-		if os.Getenv(EnvNoProxy) != "" {
-			return
-		}
-		key, val := DetectProxyEnv()
-		if key == "" {
-			return
-		}
-		fmt.Fprintf(w, "[lark-cli] [WARN] proxy detected: %s=%s — requests (including credentials) will transit through this proxy. Set %s=1 to disable proxy.\n",
-			key, redactProxyURL(val), EnvNoProxy)
-	})
-}
-
-// noProxyTransport is a proxy-disabled clone of http.DefaultTransport,
-// lazily built the first time LARK_CLI_NO_PROXY is observed set.
-var noProxyTransport = sync.OnceValue(func() *http.Transport {
-	def, ok := http.DefaultTransport.(*http.Transport)
-	if !ok {
-		return &http.Transport{}
-	}
-	t := def.Clone()
-	t.Proxy = nil
-	return t
-})
-
-// SharedTransport returns the base http.RoundTripper for CLI HTTP clients.
-//
-// By default it returns http.DefaultTransport — the stdlib-provided
-// process-wide singleton — so every HTTP client in the process shares one
-// TCP connection pool, TLS session cache, and HTTP/2 state. When
-// LARK_CLI_NO_PROXY is set it returns a separate proxy-disabled singleton
-// clone; LARK_CLI_NO_PROXY is checked on every call, but the clone is built
-// at most once.
-//
-// The returned RoundTripper MUST NOT be mutated. Callers that need a
-// customized transport should assert to *http.Transport and Clone() it.
-// Using a shared base is required so persistConn readLoop/writeLoop
-// goroutines are reused; cloning per call leaks them until IdleConnTimeout
-// (~90s) fires.
-func SharedTransport() http.RoundTripper {
-	if os.Getenv(EnvNoProxy) != "" {
-		return noProxyTransport()
-	}
-	return http.DefaultTransport
-}
-
-// FallbackTransport returns a shared *http.Transport singleton. It is a
-// thin wrapper over SharedTransport retained so modules that were already
-// on the leak-free singleton path (internal/auth, internal/cmdutil
-// transport decorators) do not have to migrate. New code should prefer
-// SharedTransport and treat the base as an http.RoundTripper.
-func FallbackTransport() *http.Transport {
-	if t, ok := SharedTransport().(*http.Transport); ok {
-		return t
-	}
-	return noProxyTransport()
-}

internal/util/proxy_test.go

@@ -1,204 +0,0 @@
-// Copyright (c) 2026 Lark Technologies Pte. Ltd.
-// SPDX-License-Identifier: MIT
-
-package util
-
-import (
-	"bytes"
-	"net/http"
-	"sync"
-	"testing"
-)
-
-func TestDetectProxyEnv(t *testing.T) {
-	// Clear all proxy env vars first
-	for _, k := range proxyEnvKeys {
-		t.Setenv(k, "")
-	}
-
-	key, val := DetectProxyEnv()
-	if key != "" || val != "" {
-		t.Errorf("expected no proxy, got %s=%s", key, val)
-	}
-
-	t.Setenv("HTTPS_PROXY", "http://proxy:8888")
-	key, val = DetectProxyEnv()
-	if key != "HTTPS_PROXY" || val != "http://proxy:8888" {
-		t.Errorf("expected HTTPS_PROXY=http://proxy:8888, got %s=%s", key, val)
-	}
-}
-
-func TestSharedTransport_DefaultReturnsStdlibSingleton(t *testing.T) {
-	t.Setenv(EnvNoProxy, "")
-	tr := SharedTransport()
-	if tr != http.DefaultTransport {
-		t.Error("SharedTransport should return http.DefaultTransport when LARK_CLI_NO_PROXY is unset")
-	}
-}
-
-func TestSharedTransport_NoProxyReturnsClone(t *testing.T) {
-	t.Setenv(EnvNoProxy, "1")
-	tr := SharedTransport()
-	if tr == http.DefaultTransport {
-		t.Fatal("SharedTransport should return a clone, not DefaultTransport, when LARK_CLI_NO_PROXY is set")
-	}
-	ht, ok := tr.(*http.Transport)
-	if !ok {
-		t.Fatalf("expected *http.Transport, got %T", tr)
-	}
-	if ht.Proxy != nil {
-		t.Error("no-proxy transport should have Proxy == nil")
-	}
-}
-
-func TestSharedTransport_NoProxyIsCachedSingleton(t *testing.T) {
-	t.Setenv(EnvNoProxy, "1")
-	a := SharedTransport()
-	b := SharedTransport()
-	if a != b {
-		t.Error("repeated SharedTransport calls with LARK_CLI_NO_PROXY set must return the same instance")
-	}
-}
-
-func TestSharedTransport_EnvUnsetAfterSetFallsBackToDefault(t *testing.T) {
-	// Simulate a process that first runs with LARK_CLI_NO_PROXY=1 (populating
-	// the no-proxy singleton), then unsets it. Subsequent calls must return
-	// http.DefaultTransport, NOT the cached no-proxy clone.
-	t.Setenv(EnvNoProxy, "1")
-	noProxy := SharedTransport()
-	if noProxy == http.DefaultTransport {
-		t.Fatal("precondition: first call with env set should not return DefaultTransport")
-	}
-
-	t.Setenv(EnvNoProxy, "")
-	after := SharedTransport()
-	if after != http.DefaultTransport {
-		t.Errorf("after unsetting LARK_CLI_NO_PROXY, SharedTransport must return http.DefaultTransport, got %T (%p)", after, after)
-	}
-}
-
-func TestSharedTransport_NoProxyOverridesSystemProxy(t *testing.T) {
-	t.Setenv("HTTPS_PROXY", "http://should-be-ignored:8888")
-	t.Setenv(EnvNoProxy, "1")
-
-	ht, ok := SharedTransport().(*http.Transport)
-	if !ok {
-		t.Fatalf("expected *http.Transport, got %T", SharedTransport())
-	}
-	if ht.Proxy != nil {
-		t.Error("LARK_CLI_NO_PROXY should override system proxy settings")
-	}
-}
-
-func TestWarnIfProxied_WithProxy(t *testing.T) {
-	// Reset the once guard for this test
-	proxyWarningOnce = sync.Once{}
-
-	t.Setenv("HTTPS_PROXY", "http://corp-proxy:3128")
-
-	var buf bytes.Buffer
-	WarnIfProxied(&buf)
-
-	out := buf.String()
-	if out == "" {
-		t.Error("expected warning output when proxy is set")
-	}
-	if !bytes.Contains([]byte(out), []byte("HTTPS_PROXY")) {
-		t.Errorf("warning should mention HTTPS_PROXY, got: %s", out)
-	}
-	if !bytes.Contains([]byte(out), []byte(EnvNoProxy)) {
-		t.Errorf("warning should mention %s, got: %s", EnvNoProxy, out)
-	}
-}
-
-func TestWarnIfProxied_WithoutProxy(t *testing.T) {
-	proxyWarningOnce = sync.Once{}
-
-	for _, k := range proxyEnvKeys {
-		t.Setenv(k, "")
-	}
-
-	var buf bytes.Buffer
-	WarnIfProxied(&buf)
-
-	if buf.Len() != 0 {
-		t.Errorf("expected no output when no proxy is set, got: %s", buf.String())
-	}
-}
-
-func TestWarnIfProxied_SilentWhenDisabled(t *testing.T) {
-	proxyWarningOnce = sync.Once{}
-
-	t.Setenv("HTTPS_PROXY", "http://proxy:8080")
-	t.Setenv(EnvNoProxy, "1")
-
-	var buf bytes.Buffer
-	WarnIfProxied(&buf)
-
-	if buf.Len() != 0 {
-		t.Errorf("expected no warning when proxy is disabled, got: %s", buf.String())
-	}
-}
-
-func TestWarnIfProxied_OnlyOnce(t *testing.T) {
-	proxyWarningOnce = sync.Once{}
-
-	t.Setenv("HTTP_PROXY", "http://proxy:1234")
-
-	var buf bytes.Buffer
-	WarnIfProxied(&buf)
-	first := buf.String()
-
-	WarnIfProxied(&buf)
-	second := buf.String()
-
-	if first == "" {
-		t.Error("expected warning on first call")
-	}
-	if second != first {
-		t.Error("expected no additional output on second call")
-	}
-}
-
-func TestRedactProxyURL(t *testing.T) {
-	tests := []struct {
-		input string
-		want  string
-	}{
-		{"http://proxy:8080", "http://proxy:8080"},
-		{"http://user:pass@proxy:8080", "http://***@proxy:8080/"},
-		{"http://user:p%40ss@proxy:8080/path", "http://***@proxy:8080/path"},
-		{"http://user@proxy:8080", "http://***@proxy:8080/"},
-		{"socks5://admin:secret@10.0.0.1:1080", "socks5://***@10.0.0.1:1080/"},
-		{"user:pass@proxy:8080", "***@proxy:8080"},
-		{"admin:s3cret@10.0.0.1:3128", "***@10.0.0.1:3128"},
-		{"not-a-url", "not-a-url"},
-		{"", ""},
-	}
-	for _, tt := range tests {
-		got := redactProxyURL(tt.input)
-		if got != tt.want {
-			t.Errorf("redactProxyURL(%q) = %q, want %q", tt.input, got, tt.want)
-		}
-	}
-}
-
-func TestWarnIfProxied_RedactsCredentials(t *testing.T) {
-	proxyWarningOnce = sync.Once{}
-
-	t.Setenv("HTTPS_PROXY", "http://admin:s3cret@proxy:8080")
-
-	var buf bytes.Buffer
-	WarnIfProxied(&buf)
-
-	out := buf.String()
-	if bytes.Contains([]byte(out), []byte("s3cret")) {
-		t.Errorf("warning should not contain proxy password, got: %s", out)
-	}
-	if bytes.Contains([]byte(out), []byte("admin")) {
-		t.Errorf("warning should not contain proxy username, got: %s", out)
-	}
-	if !bytes.Contains([]byte(out), []byte("***@proxy:8080")) {
-		t.Errorf("warning should contain redacted proxy URL, got: %s", out)
-	}
-}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@larksuite/cli",
-  "version": "1.0.44",
+  "version": "1.0.45",
   "description": "The official CLI for Lark/Feishu open platform",
   "bin": {
     "lark-cli": "scripts/run.js"

shortcuts/base/base_advperm_disable.go

@@ -25,6 +25,10 @@ var BaseAdvpermDisable = common.Shortcut{
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
 	},
+	Tips: []string{
+		baseHighRiskYesTip,
+		"Disabling advanced permissions invalidates existing custom roles; confirm the target Base before passing --yes.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {
 			return common.FlagErrorf("--base-token must not be blank")

shortcuts/base/base_advperm_enable.go

@@ -25,6 +25,9 @@ var BaseAdvpermEnable = common.Shortcut{
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
 	},
+	Tips: []string{
+		"Caller must be a Base admin; enable advanced permissions before creating or updating roles.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {
 			return common.FlagErrorf("--base-token must not be blank")

shortcuts/base/base_copy.go

@@ -24,6 +24,11 @@ var BaseBaseCopy = common.Shortcut{
 		{Name: "without-content", Type: "bool", Desc: "copy structure only"},
 		{Name: "time-zone", Desc: "time zone, e.g. Asia/Shanghai"},
 	},
+	Tips: []string{
+		`Example: lark-cli base +base-copy --base-token <base_token> --name "Copy of Project Tracker"`,
+		"Use --without-content when the user wants only structure.",
+		"If copied as bot, output may include permission_grant; report it so the user knows whether they can open the new Base.",
+	},
 	DryRun: dryRunBaseCopy,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeBaseCopy(runtime)

shortcuts/base/base_create.go

@@ -22,6 +22,10 @@ var BaseBaseCreate = common.Shortcut{
 		{Name: "folder-token", Desc: "folder token for destination"},
 		{Name: "time-zone", Desc: "time zone, e.g. Asia/Shanghai"},
 	},
+	Tips: []string{
+		`Example: lark-cli base +base-create --name "Project Tracker" --time-zone Asia/Shanghai`,
+		"If created as bot, output may include permission_grant; report it so the user knows whether they can open the new Base.",
+	},
 	DryRun: dryRunBaseCreate,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeBaseCreate(runtime)

shortcuts/base/base_data_query.go

@@ -20,7 +20,12 @@ var BaseDataQuery = common.Shortcut{
 	AuthTypes:   authTypes(),
 	Flags: []common.Flag{
 		baseTokenFlag(true),
-		{Name: "dsl", Desc: "query JSON DSL (LiteQuery Protocol)", Required: true},
+		{Name: "dsl", Desc: "query JSON DSL; read lark-base-data-query-guide.md first, then lark-base-data-query.md for the full DSL SSOT", Required: true},
+	},
+	Tips: []string{
+		"Use +data-query for server-side aggregation, grouping, filtering, sorting, and Top N queries.",
+		"Read lark-base-data-query-guide.md for common fewshots; use lark-base-data-query.md only when the full DSL reference is needed.",
+		"`dimensions` and `measures` cannot both be empty.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		var dsl map[string]interface{}

shortcuts/base/base_execute_test.go

@@ -515,7 +515,7 @@ func TestBaseObjectJSONShortcutsRejectArrayInDryRun(t *testing.T) {
 			if !strings.Contains(err.Error(), "--json must be a JSON object") {
 				t.Fatalf("err=%v", err)
 			}
-			if !strings.Contains(err.Error(), "lark-base skill") {
+			if !strings.Contains(err.Error(), "match the documented shape") {
 				t.Fatalf("err=%v", err)
 			}
 			if strings.Contains(err.Error(), "array") {

shortcuts/base/base_form_create.go

@@ -25,6 +25,9 @@ var BaseFormCreate = common.Shortcut{
 		{Name: "name", Desc: "form name", Required: true},
 		{Name: "description", Desc: `form description (plain text or markdown link like [text](https://example.com))`},
 	},
+	Tips: []string{
+		"Record the returned form_id; form question create/list/update/delete commands need it.",
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().
 			POST("/open-apis/base/v3/bases/:base_token/tables/:table_id/forms").

shortcuts/base/base_form_delete.go

@@ -22,6 +22,10 @@ var BaseFormDelete = common.Shortcut{
 		{Name: "table-id", Desc: "table ID", Required: true},
 		{Name: "form-id", Desc: "form ID", Required: true},
 	},
+	Tips: []string{
+		"Use +form-list or +form-get first when the form target is ambiguous.",
+		baseHighRiskYesTip,
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().
 			DELETE("/open-apis/base/v3/bases/:base_token/tables/:table_id/forms/:form_id").

shortcuts/base/base_form_list.go

@@ -23,7 +23,7 @@ var BaseFormsList = common.Shortcut{
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "Base token (base_token)", Required: true},
 		{Name: "table-id", Desc: "table ID", Required: true},
-		{Name: "page-size", Type: "int", Default: "100", Desc: "page size per request (max 100)"},
+		{Name: "page-size", Type: "int", Default: "100", Desc: "page size per request, max 100"},
 	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().

shortcuts/base/base_form_questions_delete.go

@@ -25,6 +25,9 @@ var BaseFormQuestionsDelete = common.Shortcut{
 		{Name: "form-id", Desc: "form ID", Required: true},
 		{Name: "question-ids", Desc: `JSON array of question IDs to delete, max 10 items, e.g. '["q_001","q_002"]'`, Required: true},
 	},
+	Tips: []string{
+		baseHighRiskYesTip,
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().
 			DELETE("/open-apis/base/v3/bases/:base_token/tables/:table_id/forms/:form_id/questions").

shortcuts/base/base_form_questions_list.go

@@ -25,6 +25,9 @@ var BaseFormQuestionsList = common.Shortcut{
 		{Name: "table-id", Desc: "table ID", Required: true},
 		{Name: "form-id", Desc: "form ID", Required: true},
 	},
+	Tips: []string{
+		"Use returned question id values for +form-questions-update and +form-questions-delete.",
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().
 			GET("/open-apis/base/v3/bases/:base_token/tables/:table_id/forms/:form_id/questions").

shortcuts/base/base_get.go

@@ -17,7 +17,10 @@ var BaseBaseGet = common.Shortcut{
 	Scopes:      []string{"base:app:read"},
 	AuthTypes:   authTypes(),
 	Flags:       []common.Flag{baseTokenFlag(true)},
-	DryRun:      dryRunBaseGet,
+	Tips: []string{
+		"Use a real Base token; workspace tokens and wiki tokens are not accepted by this command.",
+	},
+	DryRun: dryRunBaseGet,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeBaseGet(runtime)
 	},

shortcuts/base/base_role_create.go

@@ -25,7 +25,12 @@ var BaseRoleCreate = common.Shortcut{
 	AuthTypes:   []string{"user", "bot"},
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
-		{Name: "json", Desc: `body JSON (AdvPermBaseRoleConfig), e.g. {"role_name":"Reviewer","role_type":"custom_role","table_rule_map":{...}}`, Required: true},
+		{Name: "json", Desc: "role config JSON; read lark-base-role-guide.md and role-config.md before constructing permissions", Required: true},
+	},
+	Tips: []string{
+		"Requires advanced permissions to be enabled and the caller to be a Base admin.",
+		"Use lark-base-role-guide.md as the entry guide and role-config.md as the role permission JSON SSOT.",
+		"Create supports custom_role only.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {

shortcuts/base/base_role_delete.go

@@ -26,6 +26,12 @@ var BaseRoleDelete = common.Shortcut{
 		{Name: "base-token", Desc: "base token", Required: true},
 		{Name: "role-id", Desc: "role ID (e.g. rolxxxxxx4)", Required: true},
 	},
+	Tips: []string{
+		baseHighRiskYesTip,
+		"Requires advanced permissions to be enabled and the caller to be a Base admin.",
+		"Only custom roles can be deleted; system roles cannot be deleted.",
+		"Use +role-get first if the role target is ambiguous, then pass --yes to confirm deletion.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {
 			return common.FlagErrorf("--base-token must not be blank")

shortcuts/base/base_role_get.go

@@ -27,6 +27,10 @@ var BaseRoleGet = common.Shortcut{
 		{Name: "base-token", Desc: "base token", Required: true},
 		{Name: "role-id", Desc: "role ID (e.g. rolxxxxxx4)", Required: true},
 	},
+	Tips: []string{
+		"Requires advanced permissions to be enabled and the caller to be a Base admin.",
+		"Use before +role-update to inspect the current full permission config.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {
 			return common.FlagErrorf("--base-token must not be blank")

shortcuts/base/base_role_list.go

@@ -26,6 +26,10 @@ var BaseRoleList = common.Shortcut{
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
 	},
+	Tips: []string{
+		"Requires advanced permissions to be enabled and the caller to be a Base admin.",
+		"Returns role summaries; use +role-get for the full permission config.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {
 			return common.FlagErrorf("--base-token must not be blank")

shortcuts/base/base_role_update.go

@@ -26,7 +26,13 @@ var BaseRoleUpdate = common.Shortcut{
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
 		{Name: "role-id", Desc: "role ID (e.g. rolxxxxxx4)", Required: true},
-		{Name: "json", Desc: `body JSON (delta AdvPermBaseRoleConfig), e.g. {"role_name":"New Name","role_type":"custom_role","table_rule_map":{...}}`, Required: true},
+		{Name: "json", Desc: "delta role config JSON; read lark-base-role-guide.md and role-config.md before changing permissions", Required: true},
+	},
+	Tips: []string{
+		baseHighRiskYesTip,
+		"Requires advanced permissions to be enabled and the caller to be a Base admin.",
+		"Update is a delta merge: only changed fields are updated, others remain unchanged.",
+		"Use lark-base-role-guide.md as the entry guide and role-config.md as the role permission JSON SSOT.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {

shortcuts/base/base_shortcut_helpers.go

@@ -63,7 +63,7 @@ func loadJSONInput(pc *parseCtx, raw string, flagName string) (string, error) {
 }
 
 func jsonInputTip(flagName string) string {
-	return fmt.Sprintf("tip: pass a valid JSON directly, or use --%s @file.json; use the lark-base skill or this command's reference to find the expected body", flagName)
+	return fmt.Sprintf("tip: pass a valid JSON directly, or use --%s @file.json; for complex JSON/DSL, read the lark-base reference and match the documented shape", flagName)
 }
 
 func formatJSONError(flagName string, target string, err error) error {

shortcuts/base/base_shortcuts_test.go

@@ -198,6 +198,25 @@ func TestBaseDeleteShortcutsRisk(t *testing.T) {
 	}
 }
 
+func TestBaseHighRiskShortcutsTipsGuideAgents(t *testing.T) {
+	for _, shortcut := range Shortcuts() {
+		if shortcut.Risk != "high-risk-write" {
+			continue
+		}
+		parent := &cobra.Command{Use: "base"}
+		shortcut.Mount(parent, &cmdutil.Factory{})
+		cmd := parent.Commands()[0]
+		flag := cmd.Flags().Lookup("yes")
+		if flag == nil {
+			t.Fatalf("%s missing --yes flag", shortcut.Command)
+		}
+		tips := strings.Join(cmdutil.GetTips(cmd), "\n")
+		if !strings.Contains(tips, "pass --yes without asking again") {
+			t.Fatalf("%s tips missing agent guidance:\n%s", shortcut.Command, tips)
+		}
+	}
+}
+
 func TestBaseFieldCreateHelpHidesReadGuideFlag(t *testing.T) {
 	parent := &cobra.Command{Use: "base"}
 	BaseFieldCreate.Mount(parent, &cmdutil.Factory{})
@@ -251,20 +270,19 @@ func TestBaseRecordReadHelpGuidesAgents(t *testing.T) {
 			name:     "record search",
 			shortcut: BaseRecordSearch,
 			wantHelp: []string{
-				"requires keyword/search_fields",
-				"optional select_fields/view_id/offset/limit",
+				`record search JSON object, e.g. {"keyword":"Alice","search_fields":["Name"],"select_fields":["Name","Status"],"limit":50}`,
+				"for keyword search only",
 				"output format: markdown (default) | json",
 			},
 			wantTips: []string{
-				`lark-cli base +record-search --base-token <base_token> --table-id <table_id> --json`,
-				`"select_fields":["Name","Status"]`,
-				`JSON shape: {"keyword":"<text>","search_fields":["<field_id_or_name>"]`,
+				"Happy path fields: keyword (string), search_fields",
 				"search_fields length 1-20",
 				"limit range 1-200 defaults to 10",
 				"view_id scopes search to records in that view",
 				"Default output is markdown",
 				"only for keyword search",
 				"lark-base record read SOP",
+				"inventing search JSON",
 			},
 		},
 		{
@@ -311,6 +329,401 @@ func TestBaseRecordReadHelpGuidesAgents(t *testing.T) {
 	}
 }
 
+func TestBaseDashboardHelpGuidesAgents(t *testing.T) {
+	tests := []struct {
+		name     string
+		shortcut common.Shortcut
+		wantTips []string
+	}{
+		{
+			name:     "dashboard list",
+			shortcut: BaseDashboardList,
+			wantTips: []string{
+				"Use returned dashboard_id values",
+			},
+		},
+		{
+			name:     "dashboard get",
+			shortcut: BaseDashboardGet,
+			wantTips: []string{
+				"block-level details",
+			},
+		},
+		{
+			name:     "dashboard create",
+			shortcut: BaseDashboardCreate,
+			wantTips: []string{
+				"Record the returned dashboard_id",
+			},
+		},
+		{
+			name:     "dashboard update",
+			shortcut: BaseDashboardUpdate,
+			wantTips: []string{},
+		},
+		{
+			name:     "dashboard delete",
+			shortcut: BaseDashboardDelete,
+			wantTips: []string{
+				"lark-cli base +dashboard-delete --base-token <base_token> --dashboard-id <dashboard_id> --yes",
+				"also deletes its blocks",
+				"pass --yes",
+			},
+		},
+		{
+			name:     "dashboard arrange",
+			shortcut: BaseDashboardArrange,
+			wantTips: []string{
+				"not deterministic or position-specific",
+			},
+		},
+		{
+			name:     "dashboard block list",
+			shortcut: BaseDashboardBlockList,
+			wantTips: []string{
+				"lark-cli base +dashboard-block-list --base-token <base_token> --dashboard-id <dashboard_id>",
+				"Use returned block_id and type values",
+			},
+		},
+		{
+			name:     "dashboard block get",
+			shortcut: BaseDashboardBlockGet,
+			wantTips: []string{
+				"lark-cli base +dashboard-block-get --base-token <base_token> --dashboard-id <dashboard_id> --block-id <block_id>",
+				"metadata such as name, type, layout, and data_config",
+				"computed chart result",
+			},
+		},
+		{
+			name:     "dashboard block get data",
+			shortcut: BaseDashboardBlockGetData,
+			wantTips: []string{
+				"lark-cli base +dashboard-block-get-data --base-token <base_token> --block-id <block_id>",
+				"does not need --dashboard-id",
+				"computed chart protocol JSON",
+			},
+		},
+		{
+			name:     "dashboard block create",
+			shortcut: BaseDashboardBlockCreate,
+			wantTips: []string{
+				`lark-cli base +dashboard-block-create --base-token <base_token> --dashboard-id <dashboard_id> --name "Order Count" --type statistics --data-config '{"table_name":"Orders","count_all":true}'`,
+				`--type text --data-config '{"text":"# Sales Dashboard"}'`,
+				"+table-list and +field-list",
+				"not table_id or field_id",
+				"dashboard-block-data-config.md as the SSOT",
+				"do not invent data_config from natural language",
+				"sequentially",
+			},
+		},
+		{
+			name:     "dashboard block update",
+			shortcut: BaseDashboardBlockUpdate,
+			wantTips: []string{
+				`lark-cli base +dashboard-block-update --base-token <base_token> --dashboard-id <dashboard_id> --block-id <block_id> --name "Total Sales"`,
+				`--data-config '{"series":[{"field_name":"Amount","rollup":"SUM"}]}'`,
+				"dashboard-block-data-config.md as the SSOT",
+				"do not invent data_config from natural language",
+				"Block type cannot be changed",
+				"top-level keys",
+			},
+		},
+		{
+			name:     "dashboard block delete",
+			shortcut: BaseDashboardBlockDelete,
+			wantTips: []string{
+				"lark-cli base +dashboard-block-delete --base-token <base_token> --dashboard-id <dashboard_id> --block-id <block_id> --yes",
+				"pass --yes",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			parent := &cobra.Command{Use: "base"}
+			tt.shortcut.Mount(parent, &cmdutil.Factory{})
+			cmd := parent.Commands()[0]
+
+			tips := strings.Join(cmdutil.GetTips(cmd), "\n")
+			for _, want := range tt.wantTips {
+				if !strings.Contains(tips, want) {
+					t.Fatalf("tips missing %q:\n%s", want, tips)
+				}
+			}
+		})
+	}
+}
+
+func TestBaseWorkflowHelpGuidesAgents(t *testing.T) {
+	tests := []struct {
+		name     string
+		shortcut common.Shortcut
+		wantTips []string
+	}{
+		{
+			name:     "workflow list",
+			shortcut: BaseWorkflowList,
+			wantTips: []string{
+				"workflow_id values with wkf prefix",
+				"auto-paginates",
+			},
+		},
+		{
+			name:     "workflow get",
+			shortcut: BaseWorkflowGet,
+			wantTips: []string{
+				"workflow-id must start with wkf",
+				"steps may be an empty array",
+				"Use +workflow-get before +workflow-update",
+				"lark-base-workflow-schema.md",
+			},
+		},
+		{
+			name:     "workflow create",
+			shortcut: BaseWorkflowCreate,
+			wantTips: []string{
+				"lark-cli base +workflow-create --base-token <base_token> --json @workflow.json",
+				"client_token is required",
+				"New workflows are created disabled",
+				"+table-list and +field-list",
+				"Step ids must be unique",
+				"lark-base-workflow-guide.md as the entry guide",
+				"lark-base-workflow-schema.md as the steps JSON SSOT",
+				"do not invent steps[].type/data/next/children from natural language",
+			},
+		},
+		{
+			name:     "workflow update",
+			shortcut: BaseWorkflowUpdate,
+			wantTips: []string{
+				"lark-cli base +workflow-update --base-token <base_token> --workflow-id <workflow_id> --json @workflow.json",
+				"PUT uses full replacement semantics",
+				"Use +workflow-get first",
+				"keep title/status/steps fields",
+				"workflow-id must start with wkf",
+				"Updating does not enable or disable",
+				"do not invent steps[].type/data/next/children from natural language",
+			},
+		},
+		{
+			name:     "workflow enable",
+			shortcut: BaseWorkflowEnable,
+			wantTips: []string{
+				"workflow-id must start with wkf",
+				"does not modify steps",
+				"New workflows are created disabled",
+			},
+		},
+		{
+			name:     "workflow disable",
+			shortcut: BaseWorkflowDisable,
+			wantTips: []string{
+				"workflow-id must start with wkf",
+				"does not delete the workflow or its steps",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			parent := &cobra.Command{Use: "base"}
+			tt.shortcut.Mount(parent, &cmdutil.Factory{})
+			cmd := parent.Commands()[0]
+
+			tips := strings.Join(cmdutil.GetTips(cmd), "\n")
+			for _, want := range tt.wantTips {
+				if !strings.Contains(tips, want) {
+					t.Fatalf("tips missing %q:\n%s", want, tips)
+				}
+			}
+		})
+	}
+}
+
+func TestBaseJSONExamplesLiveInFlagDescriptions(t *testing.T) {
+	tests := []struct {
+		name     string
+		shortcut common.Shortcut
+		wantHelp []string
+	}{
+		{
+			name:     "table create fields",
+			shortcut: BaseTableCreate,
+			wantHelp: []string{
+				`field JSON array for create, e.g. [{"name":"Title","type":"text"}`,
+			},
+		},
+		{
+			name:     "view set filter",
+			shortcut: BaseViewSetFilter,
+			wantHelp: []string{
+				`filter JSON object, e.g. {"logic":"and","conditions":[["Status","==","Todo"]]}`,
+			},
+		},
+		{
+			name:     "view set sort",
+			shortcut: BaseViewSetSort,
+			wantHelp: []string{
+				`sort_config JSON object, e.g. {"sort_config":[{"field":"Priority","desc":true}]}`,
+				`use {"sort_config":[]} to clear`,
+			},
+		},
+		{
+			name:     "view set group",
+			shortcut: BaseViewSetGroup,
+			wantHelp: []string{
+				`group JSON object with group_config array, e.g. {"group_config":[{"field":"Status","desc":false}]}`,
+			},
+		},
+		{
+			name:     "view set card",
+			shortcut: BaseViewSetCard,
+			wantHelp: []string{
+				`card JSON object, e.g. {"cover_field":"Cover"} or {"cover_field":null} to clear`,
+			},
+		},
+		{
+			name:     "view set timebar",
+			shortcut: BaseViewSetTimebar,
+			wantHelp: []string{
+				`timebar JSON object with start_time, end_time, title, e.g. {"start_time":"Start Date","end_time":"End Date","title":"Name"}`,
+			},
+		},
+		{
+			name:     "view set visible fields",
+			shortcut: BaseViewSetVisibleFields,
+			wantHelp: []string{
+				`visible fields JSON object, e.g. {"visible_fields":["Name","Status"]}`,
+			},
+		},
+		{
+			name:     "form question delete",
+			shortcut: BaseFormQuestionsDelete,
+			wantHelp: []string{
+				`JSON array of question IDs to delete, max 10 items, e.g. '["q_001","q_002"]'`,
+			},
+		},
+		{
+			name:     "record search json",
+			shortcut: BaseRecordSearch,
+			wantHelp: []string{
+				`record search JSON object, e.g. {"keyword":"Alice","search_fields":["Name"],"select_fields":["Name","Status"],"limit":50}`,
+			},
+		},
+		{
+			name:     "record upsert json",
+			shortcut: BaseRecordUpsert,
+			wantHelp: []string{
+				`record field map JSON object, e.g. {"Name":"Alice","Status":"Todo"}; do not wrap in fields`,
+			},
+		},
+		{
+			name:     "record batch create json",
+			shortcut: BaseRecordBatchCreate,
+			wantHelp: []string{
+				`batch create JSON object, e.g. {"fields":["Name","Status"],"rows":[["Task A","Todo"],["Task B",null]]}; rows follow fields order`,
+			},
+		},
+		{
+			name:     "record batch update json",
+			shortcut: BaseRecordBatchUpdate,
+			wantHelp: []string{
+				`batch update JSON object, e.g. {"record_id_list":["rec_xxx"],"patch":{"Status":"Done"}}; same patch applies to all records`,
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			parent := &cobra.Command{Use: "base"}
+			tt.shortcut.Mount(parent, &cmdutil.Factory{})
+			cmd := parent.Commands()[0]
+
+			help := cmd.Flags().FlagUsages()
+			for _, want := range tt.wantHelp {
+				if !strings.Contains(help, want) {
+					t.Fatalf("flag help missing %q:\n%s", want, help)
+				}
+			}
+		})
+	}
+}
+
+func TestBaseRecordWriteHelpGuidesAgents(t *testing.T) {
+	tests := []struct {
+		name     string
+		shortcut common.Shortcut
+		wantTips []string
+	}{
+		{
+			name:     "record upsert",
+			shortcut: BaseRecordUpsert,
+			wantTips: []string{
+				"Happy path JSON is a top-level field map",
+				"Without --record-id this creates a record",
+				"does not auto-upsert by business key",
+				"use +field-list to confirm real writable fields",
+				"do not write system fields, formula, lookup, or attachment fields",
+				"CellValue happy path: text/phone/url",
+				"select -> \"Todo\"",
+				"multi-select -> [\"Tag A\",\"Tag B\"]",
+				"datetime -> \"2026-03-24 10:00:00\"",
+				"checkbox -> true/false",
+				`ID-based CellValue: user/group/link fields use arrays like [{"id":"ou_xxx"}]`,
+				`location uses {"lng":116.397428,"lat":39.90923}`,
+				"Do not guess user/chat/linked-record IDs or location coordinates",
+				"lark-base-cell-value.md",
+				"do not invent values for fields not covered by the happy path",
+			},
+		},
+		{
+			name:     "record batch create",
+			shortcut: BaseRecordBatchCreate,
+			wantTips: []string{
+				"Happy path fields: fields is the column order",
+				"rows is an array of row arrays",
+				"may use null for empty cells",
+				"use +field-list to confirm real writable fields",
+				"Batch create supports max 200 rows per call",
+				"CellValue happy path: text/phone/url",
+				`ID-based CellValue: user/group/link fields use arrays like [{"id":"ou_xxx"}]`,
+				"lark-base-cell-value.md",
+				"do not invent values for fields not covered by the happy path",
+			},
+		},
+		{
+			name:     "record batch update",
+			shortcut: BaseRecordBatchUpdate,
+			wantTips: []string{
+				"Happy path fields: record_id_list is the target record IDs",
+				"patch is a field map applied unchanged to every target record",
+				"Do not use +record-batch-update for per-row different values",
+				"use +field-list to confirm real writable fields",
+				"Batch update supports max 200 records per call",
+				"CellValue happy path: text/phone/url",
+				`ID-based CellValue: user/group/link fields use arrays like [{"id":"ou_xxx"}]`,
+				"lark-base-cell-value.md",
+				"do not invent values for fields not covered by the happy path",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			parent := &cobra.Command{Use: "base"}
+			tt.shortcut.Mount(parent, &cmdutil.Factory{})
+			cmd := parent.Commands()[0]
+
+			tips := strings.Join(cmdutil.GetTips(cmd), "\n")
+			for _, want := range tt.wantTips {
+				if !strings.Contains(tips, want) {
+					t.Fatalf("tips missing %q:\n%s", want, tips)
+				}
+			}
+		})
+	}
+}
+
 func TestBaseFieldUpdateHelpGuidesAgents(t *testing.T) {
 	parent := &cobra.Command{Use: "base"}
 	BaseFieldUpdate.Mount(parent, &cmdutil.Factory{})
@@ -328,7 +741,7 @@ func TestBaseFieldUpdateHelpGuidesAgents(t *testing.T) {
 
 	tips := strings.Join(cmdutil.GetTips(cmd), "\n")
 	wantTips := []string{
-		`lark-cli base +field-update --base-token <base_token> --table-id <table_id> --field-id <field_id> --json '{"name":"Status","type":"text"}'`,
+		`lark-cli base +field-update --base-token <base_token> --table-id <table_id> --field-id "Status" --json '{"name":"Status","type":"text"}' --yes`,
 		`"type":"select","multiple":false,"options":[{"name":"Todo"},{"name":"Done"}]`,
 		"full field-definition PUT semantics",
 		"Read the current field first with +field-get",

shortcuts/base/dashboard_arrange.go

@@ -22,6 +22,9 @@ var BaseDashboardArrange = common.Shortcut{
 		dashboardIDFlag(true),
 		{Name: "user-id-type", Desc: "user ID type: open_id / union_id / user_id"},
 	},
+	Tips: []string{
+		"Server-side smart layout is not deterministic or position-specific; use only when the user asks to arrange or beautify a dashboard.",
+	},
 	DryRun: dryRunDashboardArrange,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeDashboardArrange(runtime)

shortcuts/base/dashboard_block_create.go

@@ -25,10 +25,19 @@ var BaseDashboardBlockCreate = common.Shortcut{
 		dashboardIDFlag(true),
 		{Name: "name", Desc: "block name", Required: true},
 		{Name: "type", Desc: "block type: column(柱状图)|bar(条形图)|line(折线图)|pie(饼图)|ring(环形图)|area(面积图)|combo(组合图)|scatter(散点图)|funnel(漏斗图)|wordCloud(词云)|radar(雷达图)|statistics(指标卡)|text(文本). Read dashboard-block-data-config.md before creating.", Required: true},
-		{Name: "data-config", Desc: "data config JSON object (table_name, series, count_all, group_by, filter, etc.)"},
-		{Name: "user-id-type", Desc: "user ID type: open_id / union_id / user_id"},
+		{Name: "data-config", Desc: "data_config JSON object; read dashboard-block-data-config.md for the SSOT"},
+		{Name: "user-id-type", Desc: "user ID type for user fields in filters: open_id / union_id / user_id"},
 		{Name: "no-validate", Type: "bool", Desc: "skip local data_config validation"},
 	},
+	Tips: []string{
+		`lark-cli base +dashboard-block-create --base-token <base_token> --dashboard-id <dashboard_id> --name "Order Count" --type statistics --data-config '{"table_name":"Orders","count_all":true}'`,
+		`lark-cli base +dashboard-block-create --base-token <base_token> --dashboard-id <dashboard_id> --name "Dashboard Note" --type text --data-config '{"text":"# Sales Dashboard"}'`,
+		"Before creating data-backed blocks, use +table-list and +field-list to confirm real table and field names.",
+		"data_config uses table and field names, not table_id or field_id.",
+		"Read dashboard-block-data-config.md as the SSOT for chart templates, filters, metric rules, and type-specific fields; do not invent data_config from natural language.",
+		"Record the returned block_id; block update/delete/get-data commands need it.",
+		"Create dashboard blocks sequentially; do not parallelize multiple block creates for the same dashboard.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		pc := newParseCtx(runtime)
 		if runtime.Bool("no-validate") {

shortcuts/base/dashboard_block_delete.go

@@ -22,6 +22,10 @@ var BaseDashboardBlockDelete = common.Shortcut{
 		dashboardIDFlag(true),
 		blockIDFlag(true),
 	},
+	Tips: []string{
+		"lark-cli base +dashboard-block-delete --base-token <base_token> --dashboard-id <dashboard_id> --block-id <block_id> --yes",
+		baseHighRiskYesTip,
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().
 			DELETE("/open-apis/base/v3/bases/:base_token/dashboards/:dashboard_id/blocks/:block_id").

shortcuts/base/dashboard_block_get.go

@@ -24,6 +24,11 @@ var BaseDashboardBlockGet = common.Shortcut{
 		blockIDFlag(true),
 		{Name: "user-id-type", Desc: "user ID type: open_id / union_id / user_id"},
 	},
+	Tips: []string{
+		"lark-cli base +dashboard-block-get --base-token <base_token> --dashboard-id <dashboard_id> --block-id <block_id>",
+		"Use this command for block metadata such as name, type, layout, and data_config.",
+		"Use +dashboard-block-get-data when you need the computed chart result instead of metadata.",
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		params := map[string]interface{}{}
 		if uid := strings.TrimSpace(runtime.Str("user-id-type")); uid != "" {

shortcuts/base/dashboard_block_get_data.go

@@ -23,6 +23,7 @@ var BaseDashboardBlockGetData = common.Shortcut{
 	},
 	Tips: []string{
 		"lark-cli base +dashboard-block-get-data --base-token <base_token> --block-id <block_id>",
+		"This command does not need --dashboard-id.",
 		"Use +dashboard-block-get first when you need block metadata like name, type, or data_config.",
 		"This command returns computed chart protocol JSON directly, not wrapped block metadata.",
 		"Text blocks do not have computed chart data; this shortcut is for chart/statistics blocks.",

shortcuts/base/dashboard_block_list.go

@@ -21,9 +21,13 @@ var BaseDashboardBlockList = common.Shortcut{
 	Flags: []common.Flag{
 		baseTokenFlag(true),
 		dashboardIDFlag(true),
-		{Name: "page-size", Desc: "page size (max 100)"},
+		{Name: "page-size", Desc: "page size, default 20, max 100"},
 		{Name: "page-token", Desc: "pagination token"},
 	},
+	Tips: []string{
+		"lark-cli base +dashboard-block-list --base-token <base_token> --dashboard-id <dashboard_id>",
+		"Use returned block_id and type values for +dashboard-block-get/update/delete/get-data.",
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		params := map[string]interface{}{}
 		if ps := strings.TrimSpace(runtime.Str("page-size")); ps != "" {

shortcuts/base/dashboard_block_update.go

@@ -24,10 +24,18 @@ var BaseDashboardBlockUpdate = common.Shortcut{
 		dashboardIDFlag(true),
 		blockIDFlag(true),
 		{Name: "name", Desc: "new block name"},
-		{Name: "data-config", Desc: "data config JSON. For chart types: table_name, series|count_all, group_by, filter. For text type: text (markdown supported). See dashboard-block-data-config.md for details."},
-		{Name: "user-id-type", Desc: "user ID type: open_id / union_id / user_id"},
+		{Name: "data-config", Desc: "data_config JSON object; read dashboard-block-data-config.md for the SSOT"},
+		{Name: "user-id-type", Desc: "user ID type for user fields in filters: open_id / union_id / user_id"},
 		{Name: "no-validate", Type: "bool", Desc: "skip local data_config validation"},
 	},
+	Tips: []string{
+		`lark-cli base +dashboard-block-update --base-token <base_token> --dashboard-id <dashboard_id> --block-id <block_id> --name "Total Sales"`,
+		`lark-cli base +dashboard-block-update --base-token <base_token> --dashboard-id <dashboard_id> --block-id <block_id> --data-config '{"series":[{"field_name":"Amount","rollup":"SUM"}]}'`,
+		"Read dashboard-block-data-config.md as the SSOT for data_config templates, filters, metric rules, and type-specific fields; do not invent data_config from natural language.",
+		"Use +dashboard-block-get first to inspect the current data_config before replacing nested values.",
+		"Block type cannot be changed; delete and recreate the block to change chart type.",
+		"data_config update merges top-level keys, but each provided key is replaced as a whole.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		pc := newParseCtx(runtime)
 		if runtime.Bool("no-validate") {

shortcuts/base/dashboard_create.go

@@ -20,7 +20,10 @@ var BaseDashboardCreate = common.Shortcut{
 	Flags: []common.Flag{
 		baseTokenFlag(true),
 		{Name: "name", Desc: "dashboard name", Required: true},
-		{Name: "theme-style", Desc: "theme style"},
+		{Name: "theme-style", Desc: "theme style, defaults to platform default when omitted"},
+	},
+	Tips: []string{
+		"Record the returned dashboard_id; dashboard block create/get/update/delete/arrange commands need it.",
 	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		body := map[string]interface{}{}

shortcuts/base/dashboard_delete.go

@@ -21,6 +21,11 @@ var BaseDashboardDelete = common.Shortcut{
 		baseTokenFlag(true),
 		dashboardIDFlag(true),
 	},
+	Tips: []string{
+		"lark-cli base +dashboard-delete --base-token <base_token> --dashboard-id <dashboard_id> --yes",
+		"Deleting a dashboard also deletes its blocks and cannot be recovered.",
+		baseHighRiskYesTip,
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().
 			DELETE("/open-apis/base/v3/bases/:base_token/dashboards/:dashboard_id").

shortcuts/base/dashboard_get.go

@@ -21,6 +21,9 @@ var BaseDashboardGet = common.Shortcut{
 		baseTokenFlag(true),
 		dashboardIDFlag(true),
 	},
+	Tips: []string{
+		"Use +dashboard-block-list or +dashboard-block-get when you need block-level details.",
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		return common.NewDryRunAPI().
 			GET("/open-apis/base/v3/bases/:base_token/dashboards/:dashboard_id").

shortcuts/base/dashboard_list.go

@@ -20,9 +20,12 @@ var BaseDashboardList = common.Shortcut{
 	HasFormat:   true,
 	Flags: []common.Flag{
 		baseTokenFlag(true),
-		{Name: "page-size", Desc: "page size (max 100)"},
+		{Name: "page-size", Desc: "page size, max 100"},
 		{Name: "page-token", Desc: "pagination token"},
 	},
+	Tips: []string{
+		"Use returned dashboard_id values for +dashboard-get, +dashboard-block-list, and +dashboard-block-create.",
+	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		params := map[string]interface{}{}
 		if ps := strings.TrimSpace(runtime.Str("page-size")); ps != "" {

shortcuts/base/dashboard_update.go

@@ -21,7 +21,7 @@ var BaseDashboardUpdate = common.Shortcut{
 		baseTokenFlag(true),
 		dashboardIDFlag(true),
 		{Name: "name", Desc: "new dashboard name"},
-		{Name: "theme-style", Desc: "theme style"},
+		{Name: "theme-style", Desc: "theme style, leave empty to keep current theme"},
 	},
 	DryRun: func(ctx context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 		body := map[string]interface{}{}

shortcuts/base/field_create.go

@@ -23,7 +23,8 @@ var BaseFieldCreate = common.Shortcut{
 		{Name: "i-have-read-guide", Type: "bool", Desc: "set only after you have read the formula/lookup guide for those field types", Hidden: true},
 	},
 	Tips: []string{
-		`Example: --json '{"name":"Status","type":"text"}'`,
+		`Example text: lark-cli base +field-create --base-token <base_token> --table-id <table_id> --json '{"name":"Status","type":"text"}'`,
+		`Example select: lark-cli base +field-create --base-token <base_token> --table-id <table_id> --json '{"name":"Status","type":"select","multiple":false,"options":[{"name":"Todo"},{"name":"Done"}]}'`,
 		"Agent hint: use the lark-base skill's field-create guide for usage and limits.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {

shortcuts/base/field_delete.go

@@ -17,7 +17,11 @@ var BaseFieldDelete = common.Shortcut{
 	Scopes:      []string{"base:field:delete"},
 	AuthTypes:   authTypes(),
 	Flags:       []common.Flag{baseTokenFlag(true), tableRefFlag(true), fieldRefFlag(true)},
-	DryRun:      dryRunFieldDelete,
+	Tips: []string{
+		baseHighRiskYesTip,
+		`Example: lark-cli base +field-delete --base-token <base_token> --table-id <table_id> --field-id "Status" --yes`,
+	},
+	DryRun: dryRunFieldDelete,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeFieldDelete(runtime)
 	},

shortcuts/base/field_get.go

@@ -17,7 +17,12 @@ var BaseFieldGet = common.Shortcut{
 	Scopes:      []string{"base:field:read"},
 	AuthTypes:   authTypes(),
 	Flags:       []common.Flag{baseTokenFlag(true), tableRefFlag(true), fieldRefFlag(true)},
-	DryRun:      dryRunFieldGet,
+	Tips: []string{
+		`Example: lark-cli base +field-get --base-token <base_token> --table-id <table_id> --field-id "Status"`,
+		"field-id accepts a field ID (fld...) or the field name from the current table.",
+		"Returns full field configuration; use it as the baseline before +field-update.",
+	},
+	DryRun: dryRunFieldGet,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeFieldGet(runtime)
 	},

shortcuts/base/field_list.go

@@ -20,7 +20,7 @@ var BaseFieldList = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		{Name: "offset", Type: "int", Default: "0", Desc: "pagination offset"},
-		{Name: "limit", Type: "int", Default: "100", Desc: "pagination size"},
+		{Name: "limit", Type: "int", Default: "100", Desc: "pagination size, range 1-200"},
 	},
 	DryRun: dryRunFieldList,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {

shortcuts/base/field_search_options.go

@@ -22,7 +22,11 @@ var BaseFieldSearchOptions = common.Shortcut{
 		fieldRefFlag(true),
 		{Name: "keyword", Desc: "keyword for option query"},
 		{Name: "offset", Type: "int", Default: "0", Desc: "pagination offset"},
-		{Name: "limit", Type: "int", Default: "30", Desc: "pagination size"},
+		{Name: "limit", Type: "int", Default: "30", Desc: "pagination size, default 30"},
+	},
+	Tips: []string{
+		`Example: lark-cli base +field-search-options --base-token <base_token> --table-id <table_id> --field-id "Status" --keyword "Do"`,
+		"Use only for fields with options, such as select or multi-select fields.",
 	},
 	DryRun: dryRunFieldSearchOptions,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {

shortcuts/base/field_update.go

@@ -24,8 +24,9 @@ var BaseFieldUpdate = common.Shortcut{
 		{Name: "i-have-read-guide", Type: "bool", Desc: "acknowledge reading formula/lookup guide before creating or updating those field types", Hidden: true},
 	},
 	Tips: []string{
-		`Example: lark-cli base +field-update --base-token <base_token> --table-id <table_id> --field-id <field_id> --json '{"name":"Status","type":"text"}'`,
-		`Example: lark-cli base +field-update --base-token <base_token> --table-id <table_id> --field-id <field_id> --json '{"name":"Status","type":"select","multiple":false,"options":[{"name":"Todo"},{"name":"Done"}]}'`,
+		baseHighRiskYesTip,
+		`Example text: lark-cli base +field-update --base-token <base_token> --table-id <table_id> --field-id "Status" --json '{"name":"Status","type":"text"}' --yes`,
+		`Example select: lark-cli base +field-update --base-token <base_token> --table-id <table_id> --field-id "Status" --json '{"name":"Status","type":"select","multiple":false,"options":[{"name":"Todo"},{"name":"Done"}]}' --yes`,
 		"Update uses full field-definition PUT semantics. Read the current field first with +field-get, then send the target state.",
 		"Type conversion is allowlist-based: only use CLI for safe conversions; otherwise migrate through a new field, or ask the user to finish high-risk conversions in the web UI.",
 		"Formula and lookup updates require reading the corresponding guide first.",

shortcuts/base/helpers_test.go

@@ -38,7 +38,7 @@ func TestParseHelpers(t *testing.T) {
 	if err != nil || obj["name"] != "demo" {
 		t.Fatalf("obj=%v err=%v", obj, err)
 	}
-	if _, err := parseJSONObject(testPC, `[1]`, "json"); err == nil || !strings.Contains(err.Error(), "--json must be a JSON object") || !strings.Contains(err.Error(), "lark-base skill") || strings.Contains(err.Error(), "array") {
+	if _, err := parseJSONObject(testPC, `[1]`, "json"); err == nil || !strings.Contains(err.Error(), "--json must be a JSON object") || !strings.Contains(err.Error(), "match the documented shape") || strings.Contains(err.Error(), "array") {
 		t.Fatalf("err=%v", err)
 	}
 	if _, err := parseJSONObject(testPC, `null`, "json"); err == nil || !strings.Contains(err.Error(), "--json must be a JSON object") {
@@ -66,7 +66,7 @@ func TestParseHelpers(t *testing.T) {
 	if _, err := parseStringListFlexible(testPC, `[1]`, "fields"); err == nil || !strings.Contains(err.Error(), "invalid JSON string array") {
 		t.Fatalf("err=%v", err)
 	}
-	if _, err := parseJSONValue(testPC, "{", "json"); err == nil || !strings.Contains(err.Error(), "tip: pass a valid JSON directly") || !strings.Contains(err.Error(), "@file.json") || !strings.Contains(err.Error(), "lark-base skill") {
+	if _, err := parseJSONValue(testPC, "{", "json"); err == nil || !strings.Contains(err.Error(), "tip: pass a valid JSON directly") || !strings.Contains(err.Error(), "@file.json") || !strings.Contains(err.Error(), "complex JSON/DSL") {
 		t.Fatalf("err=%v", err)
 	}
 	if !reflect.DeepEqual(parseStringList("m,n"), []string{"m", "n"}) {
@@ -334,11 +334,11 @@ func TestJSONInputHelpers(t *testing.T) {
 		t.Fatalf("err=%v", err)
 	}
 	syntaxErr := formatJSONError("json", "object", &json.SyntaxError{Offset: 7})
-	if !strings.Contains(syntaxErr.Error(), "near byte 7") || !strings.Contains(syntaxErr.Error(), "tip: pass a valid JSON directly") || !strings.Contains(syntaxErr.Error(), "@file.json") || !strings.Contains(syntaxErr.Error(), "lark-base skill") {
+	if !strings.Contains(syntaxErr.Error(), "near byte 7") || !strings.Contains(syntaxErr.Error(), "tip: pass a valid JSON directly") || !strings.Contains(syntaxErr.Error(), "@file.json") || !strings.Contains(syntaxErr.Error(), "complex JSON/DSL") {
 		t.Fatalf("syntaxErr=%v", syntaxErr)
 	}
 	typeErr := formatJSONError("json", "object", &json.UnmarshalTypeError{Field: "filter_info"})
-	if !strings.Contains(typeErr.Error(), `field "filter_info"`) || !strings.Contains(typeErr.Error(), "tip: pass a valid JSON directly") || !strings.Contains(typeErr.Error(), "@file.json") || !strings.Contains(typeErr.Error(), "lark-base skill") {
+	if !strings.Contains(typeErr.Error(), `field "filter_info"`) || !strings.Contains(typeErr.Error(), "tip: pass a valid JSON directly") || !strings.Contains(typeErr.Error(), "@file.json") || !strings.Contains(typeErr.Error(), "complex JSON/DSL") {
 		t.Fatalf("typeErr=%v", typeErr)
 	}
 }

shortcuts/base/high_risk.go

@@ -0,0 +1,6 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package base
+
+const baseHighRiskYesTip = "This is a high-risk write command. If the user explicitly requested it and the target is unambiguous, pass --yes without asking again."

shortcuts/base/record_batch_create.go

@@ -19,13 +19,14 @@ var BaseRecordBatchCreate = common.Shortcut{
 	Flags: []common.Flag{
 		baseTokenFlag(true),
 		tableRefFlag(true),
-		{Name: "json", Desc: "batch create JSON object", Required: true},
-	},
-	Tips: []string{
-		`Example: --json '{"fields":["Title","Status"],"rows":[["Task A","Open"],["Task B","Done"]]}'`,
-		"Agent hint: use the lark-base skill's record-batch-create guide for usage and limits.",
-		"Agent hint: use lark-base-cell-value.md as the source of truth for each CellValue.",
+		{Name: "json", Desc: `batch create JSON object, e.g. {"fields":["Name","Status"],"rows":[["Task A","Todo"],["Task B",null]]}; rows follow fields order`, Required: true},
 	},
+	Tips: append([]string{
+		"Happy path fields: fields is the column order; rows is an array of row arrays; each row must match fields order and may use null for empty cells.",
+		"Before writing, use +field-list to confirm real writable fields; do not write system fields, formula, lookup, or attachment fields as normal CellValue.",
+		"Batch create supports max 200 rows per call.",
+		"Use the record-batch-create guide for command limits and edge cases.",
+	}, recordCellValueHappyPathTips...),
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateRecordJSON(runtime)
 	},

shortcuts/base/record_batch_update.go

@@ -19,13 +19,14 @@ var BaseRecordBatchUpdate = common.Shortcut{
 	Flags: []common.Flag{
 		baseTokenFlag(true),
 		tableRefFlag(true),
-		{Name: "json", Desc: "batch update JSON object", Required: true},
-	},
-	Tips: []string{
-		`Example: --json '{"record_id_list":["recXXX"],"patch":{"Status":"Done"}}'`,
-		"Agent hint: use the lark-base skill's record-batch-update guide for usage and limits.",
-		"Agent hint: use lark-base-cell-value.md as the source of truth for each patch CellValue.",
+		{Name: "json", Desc: `batch update JSON object, e.g. {"record_id_list":["rec_xxx"],"patch":{"Status":"Done"}}; same patch applies to all records`, Required: true},
 	},
+	Tips: append([]string{
+		"Happy path fields: record_id_list is the target record IDs; patch is a field map applied unchanged to every target record.",
+		"Do not use +record-batch-update for per-row different values; call +record-upsert per record or use another supported flow.",
+		"Before writing, use +field-list to confirm real writable fields; do not write system fields, formula, lookup, or attachment fields as normal CellValue.",
+		"Batch update supports max 200 records per call; use the record-batch-update guide for command limits and edge cases.",
+	}, recordCellValueHappyPathTips...),
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateRecordJSON(runtime)
 	},

shortcuts/base/record_delete.go

@@ -22,6 +22,10 @@ var BaseRecordDelete = common.Shortcut{
 		{Name: "record-id", Type: "string_array", Desc: "record ID (repeatable)"},
 		{Name: "json", Desc: `JSON object with record_id_list, e.g. {"record_id_list":["rec_xxx"]}`},
 	},
+	Tips: []string{
+		baseHighRiskYesTip,
+		`Example: lark-cli base +record-delete --base-token <base_token> --table-id <table_id> --record-id <record_id_1> --record-id <record_id_2> --yes`,
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateRecordSelection(runtime)
 	},

shortcuts/base/record_history_list.go

@@ -21,7 +21,11 @@ var BaseRecordHistoryList = common.Shortcut{
 		tableRefFlag(true),
 		recordRefFlag(true),
 		{Name: "max-version", Type: "int", Desc: "max version for next page"},
-		{Name: "page-size", Type: "int", Default: "30", Desc: "pagination size"},
+		{Name: "page-size", Type: "int", Default: "30", Desc: "pagination size, max 50"},
+	},
+	Tips: []string{
+		`Example: lark-cli base +record-history-list --base-token <base_token> --table-id <table_id> --record-id <record_id>`,
+		"This reads one record's history only; it is not a table-wide audit scan.",
 	},
 	DryRun: dryRunRecordHistoryList,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {

shortcuts/base/record_ops.go

@@ -15,6 +15,13 @@ import (
 const maxRecordSelectionCount = 200
 const maxBatchGetSelectFieldCount = 100
 
+var recordCellValueHappyPathTips = []string{
+	`CellValue happy path: text/phone/url -> "text"; number/currency/percent/rating -> 12.5; select -> "Todo"; multi-select -> ["Tag A","Tag B"]; datetime -> "2026-03-24 10:00:00"; checkbox -> true/false.`,
+	`ID-based CellValue: user/group/link fields use arrays like [{"id":"ou_xxx"}], [{"id":"oc_xxx"}], [{"id":"rec_xxx"}]; location uses {"lng":116.397428,"lat":39.90923}; null clears a cell when allowed.`,
+	"Do not guess user/chat/linked-record IDs or location coordinates; resolve them first with the relevant contact/im/record lookup flow.",
+	"Use lark-base-cell-value.md for complex CellValue shapes and special field types; do not invent values for fields not covered by the happy path.",
+}
+
 type recordSelection struct {
 	recordIDs    []string
 	selectFields []string

shortcuts/base/record_search.go

@@ -20,17 +20,15 @@ var BaseRecordSearch = common.Shortcut{
 	Flags: []common.Flag{
 		baseTokenFlag(true),
 		tableRefFlag(true),
-		{Name: "json", Desc: `record search JSON object; requires keyword/search_fields, optional select_fields/view_id/offset/limit`, Required: true},
+		{Name: "json", Desc: `record search JSON object, e.g. {"keyword":"Alice","search_fields":["Name"],"select_fields":["Name","Status"],"limit":50}; for keyword search only`, Required: true},
 		recordReadFormatFlag(),
 	},
 	Tips: []string{
-		`Example: lark-cli base +record-search --base-token <base_token> --table-id <table_id> --json '{"keyword":"Alice","search_fields":["Name"],"select_fields":["Name","Status"],"limit":50}'`,
-		`JSON shape: {"keyword":"<text>","search_fields":["<field_id_or_name>"],"select_fields":["<field_id_or_name>"],"view_id":"<view_id_or_name>","offset":0,"limit":10}.`,
+		`Happy path fields: keyword (string), search_fields (1-20 field names/ids), select_fields (optional projection, <=50), view_id (optional), offset (default 0), limit (default 10, range 1-200).`,
 		"JSON constraints: keyword length >=1; search_fields length 1-20; select_fields length <=50; offset >=0 defaults to 0; limit range 1-200 defaults to 10.",
 		"view_id scopes search to records in that view; when select_fields is omitted, returned fields follow that view's visible fields.",
 		"Default output is markdown; pass --format json to get the raw JSON envelope.",
-		"Use +record-search only for keyword search; use a filtered view plus +record-list for structured conditions.",
-		"Agent hint: follow the lark-base record read SOP for record read routing and limits.",
+		"Use +record-search only for keyword search; for structured conditions, sorting, Top/Bottom N, or global conclusions, follow the lark-base record read SOP instead of inventing search JSON.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if err := validateRecordReadFormat(runtime); err != nil {

shortcuts/base/record_share_link_create.go

@@ -22,8 +22,9 @@ var BaseRecordShareLinkCreate = common.Shortcut{
 		{Name: "record-ids", Type: "string_slice", Desc: "record IDs to generate share links for (comma-separated or repeatable, max 100)", Required: true},
 	},
 	Tips: []string{
-		`Single record:  --base-token xxx --table-id tblxxx --record-ids recxxx`,
-		`Multiple records: --base-token xxx --table-id tblxxx --record-ids rec001,rec002,rec003`,
+		`Example: lark-cli base +record-share-link-create --base-token <base_token> --table-id <table_id> --record-ids <record_id>`,
+		"Max 100 record IDs per call; duplicate IDs are ignored.",
+		"Output record_share_links maps record_id to URL; records without permission or missing records may be absent.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateRecordShareBatch(runtime)

shortcuts/base/record_upload_attachment.go

@@ -117,6 +117,7 @@ var BaseRecordRemoveAttachment = common.Shortcut{
 		{Name: "file-token", Type: "string_array", Desc: "attachment file_token to remove from the target cell; repeat to remove multiple attachments; max 50 tokens", Required: true},
 	},
 	Tips: []string{
+		baseHighRiskYesTip,
 		`Example: lark-cli base +record-remove-attachment --base-token <base_token> --table-id <table_id> --record-id <record_id> --field-id <attachment_field_id> --file-token <file_token> --yes`,
 		`Repeat --file-token to remove multiple attachments from the same cell in one call.`,
 		`This is a high-risk write command and requires --yes.`,

shortcuts/base/record_upsert.go

@@ -20,12 +20,14 @@ var BaseRecordUpsert = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		recordRefFlag(false),
-		{Name: "json", Desc: "record JSON object: Map<FieldNameOrID, CellValue>", Required: true},
-	},
-	Tips: []string{
-		`Example: --json '{"Name":"Alice"}'`,
-		"Agent hint: use the lark-base skill's record-upsert guide for usage and limits.",
+		{Name: "json", Desc: `record field map JSON object, e.g. {"Name":"Alice","Status":"Todo"}; do not wrap in fields`, Required: true},
 	},
+	Tips: append([]string{
+		"Happy path JSON is a top-level field map: each key is a real field name or field ID, each value is that field's CellValue.",
+		"Without --record-id this creates a record; with --record-id this updates that record. It does not auto-upsert by business key.",
+		"Before writing, use +field-list to confirm real writable fields; do not write system fields, formula, lookup, or attachment fields as normal CellValue.",
+		"Use the record-upsert guide for command limits and edge cases.",
+	}, recordCellValueHappyPathTips...),
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateRecordJSON(runtime)
 	},

shortcuts/base/table_create.go

@@ -20,7 +20,11 @@ var BaseTableCreate = common.Shortcut{
 		baseTokenFlag(true),
 		{Name: "name", Desc: "table name", Required: true},
 		{Name: "view", Desc: "view JSON object/array for create"},
-		{Name: "fields", Desc: "field JSON array for create"},
+		{Name: "fields", Desc: `field JSON array for create, e.g. [{"name":"Title","type":"text"},{"name":"Status","type":"select","options":[{"name":"Todo"},{"name":"Done"}]}]`},
+	},
+	Tips: []string{
+		"Before using --fields, read lark-base-field-json.md or rely on the same field JSON shape used by +field-create; do not invent field properties.",
+		"The first --fields item replaces the default field.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateTableCreate(runtime)

shortcuts/base/table_delete.go

@@ -17,7 +17,12 @@ var BaseTableDelete = common.Shortcut{
 	Scopes:      []string{"base:table:delete"},
 	AuthTypes:   authTypes(),
 	Flags:       []common.Flag{baseTokenFlag(true), tableRefFlag(true)},
-	DryRun:      dryRunTableDelete,
+	Tips: []string{
+		`Example: lark-cli base +table-delete --base-token <base_token> --table-id "Old Tasks" --yes`,
+		"table-id accepts a table ID (tbl...) or the table name in the current Base.",
+		baseHighRiskYesTip,
+	},
+	DryRun: dryRunTableDelete,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeTableDelete(runtime)
 	},

shortcuts/base/table_get.go

@@ -17,7 +17,11 @@ var BaseTableGet = common.Shortcut{
 	Scopes:      []string{"base:table:read", "base:field:read", "base:view:read"},
 	AuthTypes:   authTypes(),
 	Flags:       []common.Flag{baseTokenFlag(true), tableRefFlag(true)},
-	DryRun:      dryRunTableGet,
+	Tips: []string{
+		`Example: lark-cli base +table-get --base-token <base_token> --table-id "Tasks"`,
+		"table-id accepts a table ID (tbl...) or the table name in the current Base.",
+	},
+	DryRun: dryRunTableGet,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeTableGet(runtime)
 	},

shortcuts/base/table_list.go

@@ -19,7 +19,7 @@ var BaseTableList = common.Shortcut{
 	Flags: []common.Flag{
 		baseTokenFlag(true),
 		{Name: "offset", Type: "int", Default: "0", Desc: "pagination offset"},
-		{Name: "limit", Type: "int", Default: "50", Desc: "pagination limit"},
+		{Name: "limit", Type: "int", Default: "50", Desc: "pagination size, range 1-100"},
 	},
 	DryRun: dryRunTableList,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {

shortcuts/base/view_create.go

@@ -19,11 +19,13 @@ var BaseViewCreate = common.Shortcut{
 	Flags: []common.Flag{
 		baseTokenFlag(true),
 		tableRefFlag(true),
-		{Name: "json", Desc: "view JSON object/array", Required: true},
+		{Name: "json", Desc: "view JSON object/array; type defaults to grid; type range: grid, kanban, gallery, calendar, gantt", Required: true},
 	},
 	Tips: []string{
-		`Example: --json '{"name":"Main","type":"grid"}'`,
-		"Agent hint: use the lark-base skill's view-create guide for usage and limits.",
+		`Example: lark-cli base +view-create --base-token <base_token> --table-id <table_id> --json '{"name":"Main","type":"grid"}'`,
+		`Minimal: --json '{"name":"Main"}' creates a grid view.`,
+		"Do not pass form as a view type; form views are managed through form commands.",
+		`Use +view-set-visible-fields after creation when the user needs a specific field order or visibility.`,
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateViewCreate(runtime)

shortcuts/base/view_delete.go

@@ -17,7 +17,11 @@ var BaseViewDelete = common.Shortcut{
 	Scopes:      []string{"base:view:write_only"},
 	AuthTypes:   authTypes(),
 	Flags:       []common.Flag{baseTokenFlag(true), tableRefFlag(true), viewRefFlag(true)},
-	DryRun:      dryRunViewDelete,
+	Tips: []string{
+		baseHighRiskYesTip,
+		`Example: lark-cli base +view-delete --base-token <base_token> --table-id <table_id> --view-id "Old View" --yes`,
+	},
+	DryRun: dryRunViewDelete,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return executeViewDelete(runtime)
 	},

shortcuts/base/view_list.go

@@ -20,7 +20,7 @@ var BaseViewList = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		{Name: "offset", Type: "int", Default: "0", Desc: "pagination offset"},
-		{Name: "limit", Type: "int", Default: "100", Desc: "pagination size"},
+		{Name: "limit", Type: "int", Default: "100", Desc: "pagination size, range 1-200"},
 	},
 	DryRun: dryRunViewList,
 	Execute: func(ctx context.Context, runtime *common.RuntimeContext) error {

shortcuts/base/view_set_card.go

@@ -20,11 +20,12 @@ var BaseViewSetCard = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		viewRefFlag(true),
-		{Name: "json", Desc: "card JSON object", Required: true},
+		{Name: "json", Desc: `card JSON object, e.g. {"cover_field":"Cover"} or {"cover_field":null} to clear`, Required: true},
 	},
 	Tips: []string{
-		`Example: --json '{"cover_field":"fldCover"}'`,
-		"Agent hint: use the lark-base skill's view-set-card guide for usage and limits.",
+		"Supported view types: gallery, kanban.",
+		"cover_field should be an attachment field id/name, or null to clear.",
+		"Use +view-get-card first when updating an existing card view configuration.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateViewJSONObject(runtime)

shortcuts/base/view_set_filter.go

@@ -20,10 +20,9 @@ var BaseViewSetFilter = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		viewRefFlag(true),
-		{Name: "json", Desc: "filter JSON object", Required: true},
+		{Name: "json", Desc: `filter JSON object, e.g. {"logic":"and","conditions":[["Status","==","Todo"]]}`, Required: true},
 	},
 	Tips: []string{
-		`Example: --json '{"logic":"and","conditions":[["fldStatus","==","Todo"]]}'`,
 		"Agent hint: use the lark-base skill's view-set-filter guide for usage and limits.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {

shortcuts/base/view_set_group.go

@@ -20,11 +20,13 @@ var BaseViewSetGroup = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		viewRefFlag(true),
-		{Name: "json", Desc: "group JSON object", Required: true},
+		{Name: "json", Desc: `group JSON object with group_config array, e.g. {"group_config":[{"field":"Status","desc":false}]}; use {"group_config":[]} to clear`, Required: true},
 	},
 	Tips: []string{
-		`Example: --json '{"group_config":[{"field":"fldStatus","desc":false}]}'`,
-		"Agent hint: use the lark-base skill's view-set-group guide for usage and limits.",
+		"Supported view types: grid, kanban, gantt.",
+		"Use a JSON object, not a bare array; grouping fields must be supported by the current view.",
+		"group_config supports max 3 group items.",
+		"Use +view-get-group first when modifying an existing grouping configuration.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateViewJSONObject(runtime)

shortcuts/base/view_set_sort.go

@@ -20,11 +20,13 @@ var BaseViewSetSort = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		viewRefFlag(true),
-		{Name: "json", Desc: "sort_config JSON object", Required: true},
+		{Name: "json", Desc: `sort_config JSON object, e.g. {"sort_config":[{"field":"Priority","desc":true}]}; use {"sort_config":[]} to clear; max 10 items`, Required: true},
 	},
 	Tips: []string{
-		`Example: --json '{"sort_config":[{"field":"fldPriority","desc":true}]}'`,
-		"Agent hint: use the lark-base skill's view-set-sort guide for usage and limits.",
+		"Supported view types: grid, kanban, gallery, gantt.",
+		"Use a JSON object, not a bare array; sorting fields must be supported by the current view.",
+		"sort_config supports max 10 sort items.",
+		"Use +view-get-sort first when modifying an existing sort configuration.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateViewJSONObject(runtime)

shortcuts/base/view_set_timebar.go

@@ -20,11 +20,12 @@ var BaseViewSetTimebar = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		viewRefFlag(true),
-		{Name: "json", Desc: "timebar JSON object", Required: true},
+		{Name: "json", Desc: `timebar JSON object with start_time, end_time, title, e.g. {"start_time":"Start Date","end_time":"End Date","title":"Name"}`, Required: true},
 	},
 	Tips: []string{
-		`Example: --json '{"start_time":"fldStart","end_time":"fldEnd","title":"fldTitle"}'`,
-		"Agent hint: use the lark-base skill's view-set-timebar guide for usage and limits.",
+		"Supported view types: calendar, gantt.",
+		"start_time, end_time, and title are required; use date/time fields for start_time and end_time.",
+		"Use +view-get-timebar first when modifying an existing timebar configuration.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateViewJSONObject(runtime)

shortcuts/base/view_set_visible_fields.go

@@ -20,11 +20,12 @@ var BaseViewSetVisibleFields = common.Shortcut{
 		baseTokenFlag(true),
 		tableRefFlag(true),
 		viewRefFlag(true),
-		{Name: "json", Desc: `visible fields JSON object with "visible_fields"`, Required: true},
+		{Name: "json", Desc: `visible fields JSON object, e.g. {"visible_fields":["Name","Status"]}`, Required: true},
 	},
 	Tips: []string{
-		`Example: --json '{"visible_fields":["fldXXX"]}'`,
-		"Agent hint: use the lark-base skill's view-set-visible-fields guide for usage and limits.",
+		"Supported view types: grid, kanban, gallery, calendar, gantt.",
+		"Use a JSON object, not a bare array; primary field may be forced to the first position by the API.",
+		"visible_fields controls both visibility and order; include every field that should remain visible.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		return validateViewJSONObject(runtime)

shortcuts/base/workflow_create.go

@@ -19,7 +19,15 @@ var BaseWorkflowCreate = common.Shortcut{
 	AuthTypes:   []string{"user", "bot"},
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
-		{Name: "json", Desc: `workflow body JSON, e.g. {"title":"My Workflow","steps":[...]}`, Required: true},
+		{Name: "json", Desc: "workflow body JSON; read lark-base-workflow-guide.md and lark-base-workflow-schema.md before constructing steps", Required: true},
+	},
+	Tips: []string{
+		"lark-cli base +workflow-create --base-token <base_token> --json @workflow.json",
+		"client_token is required and should be unique per create request.",
+		"New workflows are created disabled; call +workflow-enable after creation when the user wants it active.",
+		"Before constructing steps, use +table-list and +field-list to confirm real table and field names.",
+		"Step ids must be unique, and every next/children link must reference an existing step id.",
+		"Use lark-base-workflow-guide.md as the entry guide and lark-base-workflow-schema.md as the steps JSON SSOT; do not invent steps[].type/data/next/children from natural language.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {

shortcuts/base/workflow_disable.go

@@ -21,6 +21,10 @@ var BaseWorkflowDisable = common.Shortcut{
 		{Name: "base-token", Desc: "base token", Required: true},
 		{Name: "workflow-id", Desc: "workflow ID (wkf... prefix)", Required: true},
 	},
+	Tips: []string{
+		"workflow-id must start with wkf; do not pass a tbl table ID from the same URL.",
+		"Disable only changes workflow state; it does not delete the workflow or its steps.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {
 			return common.FlagErrorf("--base-token must not be blank")

shortcuts/base/workflow_enable.go

@@ -21,6 +21,11 @@ var BaseWorkflowEnable = common.Shortcut{
 		{Name: "base-token", Desc: "base token", Required: true},
 		{Name: "workflow-id", Desc: "workflow ID (wkf... prefix)", Required: true},
 	},
+	Tips: []string{
+		"workflow-id must start with wkf; do not pass a tbl table ID from the same URL.",
+		"Enable only changes workflow state; it does not modify steps.",
+		"New workflows are created disabled; enable after creation only when the user wants it active.",
+	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {
 			return common.FlagErrorf("--base-token must not be blank")

shortcuts/base/workflow_get.go

@@ -20,7 +20,13 @@ var BaseWorkflowGet = common.Shortcut{
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
 		{Name: "workflow-id", Desc: "workflow ID (wkf... prefix)", Required: true},
-		{Name: "user-id-type", Desc: "user ID type for creator/updater fields", Enum: []string{"open_id", "union_id", "user_id"}},
+		{Name: "user-id-type", Desc: "user ID type for creator/updater fields, default open_id", Enum: []string{"open_id", "union_id", "user_id"}},
+	},
+	Tips: []string{
+		"workflow-id must start with wkf; use +workflow-list if the ID is unknown.",
+		"steps may be an empty array; that is valid for an unconfigured workflow.",
+		"Use +workflow-get before +workflow-update, then edit the returned definition and keep fields you do not intend to change.",
+		"Read lark-base-workflow-schema.md when interpreting or reusing returned steps.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {

shortcuts/base/workflow_list.go

@@ -20,7 +20,11 @@ var BaseWorkflowList = common.Shortcut{
 	Flags: []common.Flag{
 		{Name: "base-token", Desc: "base token", Required: true},
 		{Name: "status", Desc: "filter by status", Enum: []string{"enabled", "disabled"}},
-		{Name: "page-size", Type: "int", Default: "100", Desc: "page size per request (max 100)"},
+		{Name: "page-size", Type: "int", Default: "100", Desc: "page size per request, max 100"},
+	},
+	Tips: []string{
+		"Returns workflow_id values with wkf prefix; pass those IDs to +workflow-get/enable/disable/update.",
+		"This shortcut auto-paginates and returns all matched workflows.",
 	},
 	Validate: func(ctx context.Context, runtime *common.RuntimeContext) error {
 		if strings.TrimSpace(runtime.Str("base-token")) == "" {