chore: release v1.0.77 (#2051)

--slide-id used the cobra StringArray flag type, which only accepts
repeated flags and does not split comma-separated values, unlike
--slide-number (int_array -> cobra IntSlice) which already supported
CSV input. This made the two selector flags inconsistent.

Switch --slide-id to the string_slice flag type (cobra StringSlice),
which natively supports both comma-separated and repeated values, and
update the flag readers from StrArray to StrSlice. normalizeSlideIDs
already trims/dedupes/filters blanks, and
validateSlidesScreenshotSelectorLimit already caps the combined
selector count, so both continue to apply unchanged to CSV input.

Add tests covering --slide-id CSV parsing, whitespace/duplicate
normalization, and the >10 selector limit via CSV, mirroring the
existing --slide-number coverage.

Address review feedback:
- Fix "comma-separate" -> "comma-separated" wording in the --slide-id
  flag description (CodeRabbit).
- Set LARKSUITE_CLI_CONFIG_DIR to t.TempDir() in the new screenshot
  tests, per the AGENTS.md testing convention, so local configuration
  state cannot leak into or be modified by the suite.
- Add a dry-run E2E test (tests/cli_e2e/slides) that pins --slide-id
  CSV parsing through the built CLI binary and asserts the emitted
  slide_ids request body, per the AGENTS.md dry-run E2E requirement
  for shortcut flag/param changes.
- Update the lark-slides skill reference to document that --slide-id
  and --slide-number both accept comma-separated values, not just
  repeated flags, so agents can discover the new syntax.

CHANGELOG.md

@@ -2,6 +2,35 @@
 
 All notable changes to this project will be documented in this file.
 
+## [v1.0.77] - 2026-07-24
+
+### Features
+
+- introducing official card icon (#1973)
+- **apps**: validate +file-list --page-size against server (0, 200] range (#2007)
+- **apps**: support absolute and relative upload paths (#2005)
+- **slides**: fill xml-schema-quick-ref gaps that forced XSD fallback (#2026)
+- **slides**: add layout density lint for sparse/empty containers (#2022)
+- add risk-control protection (#1910)
+
+### Bug Fixes
+
+- **slides**: normalize presentation flag aliases (#2032)
+- **base**: classify +form-submit as high-risk-write (#1969)
+- **slides**: declare screenshot scope
+- **slides**: support CSV multi-value for --slide-id in screenshot (#2047)
+
+### Documentation
+
+- **skill**: clarify scope handling for query expansion (#2030)
+- **base**: clarify complete and partial updates (#1993)
+- **skills**: clarify callout child rules (#2048)
+
+### Misc
+
+- fix/task id handling (#2023)
+- fix/task search pagination (#2041)
+
 ## [v1.0.75] - 2026-07-22
 
 ### Features
@@ -1638,6 +1667,7 @@ Bundled AI agent skills for intelligent assistance:
 - Bilingual documentation (English & Chinese).
 - CI/CD pipelines: linting, testing, coverage reporting, and automated releases.
 
+[v1.0.77]: https://github.com/larksuite/cli/releases/tag/v1.0.77
 [v1.0.75]: https://github.com/larksuite/cli/releases/tag/v1.0.75
 [v1.0.74]: https://github.com/larksuite/cli/releases/tag/v1.0.74
 [v1.0.73]: https://github.com/larksuite/cli/releases/tag/v1.0.73

README.md

@@ -285,6 +285,29 @@ To reduce these risks, the tool enables default security protections at multiple
 
 We recommend using the Lark/Feishu bot integrated with this tool as a private conversational assistant. Do not add it to group chats or allow other users to interact with it, to avoid abuse of permissions or data leakage.
 
+To reduce the security risks associated with access token theft, the CLI sends a minimal set of risk-control signals with OpenAPI requests made to exact official Feishu/Lark HTTPS domains. These signals are used to help identify anomalous API activity. This protection is enabled by default. The information sent is limited to:
+
+- Operating system type: macOS, Windows, or Linux
+- Device hardware model: for example, Mac17,9
+
+To disable this protection for the current workspace, run:
+
+```bash
+lark-cli config risk-control off
+```
+
+To enable this protection for the current workspace, run:
+
+```bash
+lark-cli config risk-control on
+```
+
+To restore the default policy for the current workspace, run:
+
+```bash
+lark-cli config risk-control default
+```
+
 Please fully understand all usage risks. By using this tool, you are deemed to voluntarily assume all related responsibilities.
 
 ## Star History

README.zh.md

@@ -286,6 +286,29 @@ lark-cli schema im.messages.delete
 
 我们建议您将对接本工具的飞书机器人作为私人对话助手使用，请勿将其拉入群聊或允许其他用户与其交互，以避免权限被滥用或数据泄露。
 
+为降低访问令牌被盗用后的安全风险，CLI 在向飞书/Lark 官方 HTTPS 精确域名发起 OpenAPI 请求时，会随请求发送一组最小化的风控信号，用于辅助识别异常调用行为。该保护默认开启，发送的信息仅包括：
+
+- 操作系统类型：macOS、Windows 或 Linux
+- 设备的硬件产品型号：例如 Mac17,9
+
+如需让当前 workspace 退出该保护，可执行以下命令：
+
+```bash
+lark-cli config risk-control off
+```
+
+如需开启当前 workspace 的保护，可执行以下命令：
+
+```bash
+lark-cli config risk-control on
+```
+
+恢复当前 workspace 默认策略可执行：
+
+```bash
+lark-cli config risk-control default
+```
+
 请您充分知悉全部使用风险，使用本工具即视为您自愿承担相关所有责任。
 
 ## Star History

cmd/config/config.go

@@ -31,6 +31,7 @@ func NewCmdConfig(f *cmdutil.Factory) *cobra.Command {
 	cmd.AddCommand(NewCmdConfigShow(f, nil))
 	cmd.AddCommand(NewCmdConfigDefaultAs(f))
 	cmd.AddCommand(NewCmdConfigStrictMode(f))
+	cmd.AddCommand(NewCmdConfigRiskControl(f))
 	cmd.AddCommand(NewCmdConfigPolicy(f))
 	cmd.AddCommand(NewCmdConfigPlugins(f))
 	cmd.AddCommand(NewCmdConfigKeychainDowngrade(f))

cmd/config/risk_control.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package config
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+
+	"github.com/larksuite/cli/errs"
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/core"
+)
+
+// NewCmdConfigRiskControl creates the workspace risk-control policy command.
+func NewCmdConfigRiskControl(f *cmdutil.Factory) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "risk-control [on|off|default]",
+		Short: "Manage workspace account-protection policy",
+		Long: `View or set the account-protection risk-control policy for this workspace.
+
+Account protection is on by default. Use off to opt this workspace out, on to
+opt it back in explicitly, or default to remove the explicit preference.`,
+		Args: cobra.MaximumNArgs(1),
+		// This is persistent workspace policy, not credential management.
+		PersistentPreRunE: func(cmd *cobra.Command, _ []string) error {
+			cmd.SilenceUsage = true
+			return nil
+		},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			config, err := core.LoadOrNotConfigured()
+			if err != nil {
+				return err
+			}
+			if len(args) == 0 {
+				printRiskControl(f, config)
+				return nil
+			}
+
+			switch args[0] {
+			case "on":
+				enabled := true
+				config.RiskControl = &enabled
+			case "off":
+				enabled := false
+				config.RiskControl = &enabled
+			case "default":
+				config.RiskControl = nil
+			default:
+				return errs.NewValidationError(errs.SubtypeInvalidArgument,
+					"invalid risk-control value %q, valid values: on | off | default", args[0])
+			}
+
+			if err := core.SaveMultiAppConfig(config); err != nil {
+				return errs.NewInternalError(errs.SubtypeStorage,
+					"failed to save risk-control policy: %v", err).WithCause(err)
+			}
+			fmt.Fprintf(f.IOStreams.ErrOut, "Risk control set to %s (workspace)\n", args[0])
+			return nil
+		},
+	}
+	cmdutil.SetRisk(cmd, cmdutil.RiskWrite)
+	return cmd
+}
+
+func printRiskControl(f *cmdutil.Factory, config *core.MultiAppConfig) {
+	source := "default"
+	if config.RiskControl != nil {
+		source = "workspace"
+	}
+	fmt.Fprintf(f.IOStreams.Out, "risk-control: %s (source: %s)\n", riskControlState(config.RiskControlEnabled()), source)
+}
+
+func riskControlState(enabled bool) string {
+	if enabled {
+		return "on"
+	}
+	return "off"
+}

cmd/config/risk_control_test.go

@@ -0,0 +1,130 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package config
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"github.com/larksuite/cli/errs"
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/core"
+)
+
+func TestRiskControlWorkspacePolicy(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	config := &core.MultiAppConfig{Apps: []core.AppConfig{{
+		AppId: "cli_test", AppSecret: core.PlainSecret("secret"), Brand: core.BrandFeishu,
+	}}}
+	if err := core.SaveMultiAppConfig(config); err != nil {
+		t.Fatal(err)
+	}
+
+	f, stdout, stderr, _ := cmdutil.TestFactory(t, nil)
+	cmd := NewCmdConfigRiskControl(f)
+	cmd.SetArgs([]string{"off"})
+	if err := cmd.Execute(); err != nil {
+		t.Fatalf("set off: %v", err)
+	}
+	loaded, err := core.LoadMultiAppConfig()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if loaded.RiskControl == nil || *loaded.RiskControl {
+		t.Fatalf("RiskControl = %v, want explicit false", loaded.RiskControl)
+	}
+	if !strings.Contains(stderr.String(), "set to off") {
+		t.Fatalf("stderr = %q", stderr.String())
+	}
+
+	stdout.Reset()
+	cmd = NewCmdConfigRiskControl(f)
+	if err := cmd.Execute(); err != nil {
+		t.Fatalf("show: %v", err)
+	}
+	if got := stdout.String(); got != "risk-control: off (source: workspace)\n" {
+		t.Fatalf("stdout = %q", got)
+	}
+
+	cmd = NewCmdConfigRiskControl(f)
+	cmd.SetArgs([]string{"on"})
+	if err := cmd.Execute(); err != nil {
+		t.Fatalf("set on: %v", err)
+	}
+	loaded, err = core.LoadMultiAppConfig()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if loaded.RiskControl == nil || !*loaded.RiskControl {
+		t.Fatalf("RiskControl = %v, want explicit true", loaded.RiskControl)
+	}
+
+	cmd = NewCmdConfigRiskControl(f)
+	cmd.SetArgs([]string{"default"})
+	if err := cmd.Execute(); err != nil {
+		t.Fatalf("reset default: %v", err)
+	}
+	loaded, err = core.LoadMultiAppConfig()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if loaded.RiskControl != nil {
+		t.Fatalf("RiskControl = %v, want nil", loaded.RiskControl)
+	}
+
+	stdout.Reset()
+	cmd = NewCmdConfigRiskControl(f)
+	if err := cmd.Execute(); err != nil {
+		t.Fatalf("show default: %v", err)
+	}
+	if got := stdout.String(); got != "risk-control: on (source: default)\n" {
+		t.Fatalf("stdout = %q", got)
+	}
+}
+
+func TestRiskControlWorkspacePolicyRejectsInvalidValue(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	if err := core.SaveMultiAppConfig(&core.MultiAppConfig{Apps: []core.AppConfig{{
+		AppId: "cli_test", AppSecret: core.PlainSecret("secret"), Brand: core.BrandFeishu,
+	}}}); err != nil {
+		t.Fatal(err)
+	}
+
+	f, _, _, _ := cmdutil.TestFactory(t, nil)
+	cmd := NewCmdConfigRiskControl(f)
+	cmd.SetArgs([]string{"invalid"})
+	err := cmd.Execute()
+	var validationErr *errs.ValidationError
+	if !errors.As(err, &validationErr) {
+		t.Fatalf("error = %T %v, want *errs.ValidationError", err, err)
+	}
+	if validationErr.Subtype != errs.SubtypeInvalidArgument {
+		t.Fatalf("subtype = %q, want %q", validationErr.Subtype, errs.SubtypeInvalidArgument)
+	}
+}
+
+func TestRiskControlWorkspacePolicyAllowedWithExternalCredentials(t *testing.T) {
+	f := newConfigFactoryWithExternalProvider(t)
+	config := &core.MultiAppConfig{Apps: []core.AppConfig{{
+		AppId: "cli_test", AppSecret: core.PlainSecret("secret"), Brand: core.BrandFeishu,
+	}}}
+	if err := core.SaveMultiAppConfig(config); err != nil {
+		t.Fatal(err)
+	}
+
+	cmd := NewCmdConfig(f)
+	cmd.SetArgs([]string{"risk-control", "off"})
+	if err := cmd.Execute(); err != nil {
+		t.Fatalf("set off with external credentials: %v", err)
+	}
+
+	loaded, err := core.LoadMultiAppConfig()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if loaded.RiskControl == nil || *loaded.RiskControl {
+		t.Fatalf("RiskControl = %v, want explicit false", loaded.RiskControl)
+	}
+}

internal/cmdutil/factory_default.go

@@ -22,6 +22,7 @@ import (
 	"github.com/larksuite/cli/internal/credential"
 	"github.com/larksuite/cli/internal/keychain"
 	"github.com/larksuite/cli/internal/registry"
+	"github.com/larksuite/cli/internal/riskcontrol"
 	_ "github.com/larksuite/cli/internal/security/contentsafety" // register content safety provider
 	"github.com/larksuite/cli/internal/transport"
 	_ "github.com/larksuite/cli/internal/vfs/localfileio" // register default FileIO provider
@@ -33,7 +34,7 @@ import (
 //	Phase 1: HttpClient (no credential dependency)
 //	Phase 2: Credential (sole data source for account info)
 //	Phase 3: Config derived from Credential
-//	Phase 4: LarkClient derived from Credential
+//	Phase 4: LarkClient derived from Credential and workspace policy
 func NewDefault(streams *IOStreams, inv InvocationContext) *Factory {
 	streams = normalizeStreams(streams)
 	f := &Factory{
@@ -54,9 +55,10 @@ func NewDefault(streams *IOStreams, inv InvocationContext) *Factory {
 
 	// Phase 0: FileIO provider (no dependency)
 	f.FileIOProvider = fileio.GetProvider()
+	workspaceConfig := core.NewConfigSnapshot()
 
 	// Phase 1: HttpClient (no credential dependency)
-	f.HttpClient = cachedHttpClientFunc(f)
+	f.HttpClient = cachedHttpClientFunc(f, workspaceConfig)
 
 	// Phase 2: Credential (sole data source)
 	// Keychain is read via closure so callers can replace f.Keychain after construction.
@@ -67,7 +69,7 @@ func NewDefault(streams *IOStreams, inv InvocationContext) *Factory {
 		ErrOut:     f.IOStreams.ErrOut,
 	})
 
-	// Phase 3: Config derived from Credential via an explicit conversion boundary.
+	// Phase 3: Runtime config contains resolved account data only.
 	f.Config = sync.OnceValues(func() (*core.CliConfig, error) {
 		acct, err := f.Credential.ResolveAccount(context.Background())
 		if err != nil {
@@ -78,8 +80,9 @@ func NewDefault(streams *IOStreams, inv InvocationContext) *Factory {
 		return cfg, nil
 	})
 
-	// Phase 4: LarkClient from Credential (placeholder AppSecret)
-	f.LarkClient = cachedLarkClientFunc(f)
+	// Phase 4: LarkClient composes account data and workspace policy at the SDK
+	// transport boundary.
+	f.LarkClient = cachedLarkClientFunc(f, workspaceConfig)
 
 	return f
 }
@@ -108,13 +111,16 @@ func safeRedirectPolicy(req *http.Request, via []*http.Request) error {
 // .StderrIsTerminal field, which tests set directly.
 var warnIfProxied = transport.WarnIfProxied
 
-func cachedHttpClientFunc(f *Factory) func() (*http.Client, error) {
+func cachedHttpClientFunc(f *Factory, workspaceConfig workspaceConfigSource) func() (*http.Client, error) {
 	return sync.OnceValues(func() (*http.Client, error) {
 		if f.IOStreams.StderrIsTerminal {
 			warnIfProxied(f.IOStreams.ErrOut)
 		}
 
+		hostSignalSource := resolveSDKHostSignalSource(workspaceConfig)
+
 		var rt http.RoundTripper = transport.Shared()
+		rt = riskcontrol.NewTransport(rt, hostSignalSource)
 		rt = &RetryTransport{Base: rt}
 		rt = &SecurityHeaderTransport{Base: rt}
 		rt = &auth.SecurityPolicyTransport{Base: rt} // Add our global response interceptor
@@ -128,7 +134,7 @@ func cachedHttpClientFunc(f *Factory) func() (*http.Client, error) {
 	})
 }
 
-func cachedLarkClientFunc(f *Factory) func() (*lark.Client, error) {
+func cachedLarkClientFunc(f *Factory, workspaceConfig workspaceConfigSource) func() (*lark.Client, error) {
 	return sync.OnceValues(func() (*lark.Client, error) {
 		acct, err := f.Credential.ResolveAccount(context.Background())
 		if err != nil {
@@ -142,8 +148,15 @@ func cachedLarkClientFunc(f *Factory) func() (*lark.Client, error) {
 		if f.IOStreams.StderrIsTerminal {
 			warnIfProxied(f.IOStreams.ErrOut)
 		}
+		hostSignalSource := resolveSDKHostSignalSource(workspaceConfig)
+		var sdkBase http.RoundTripper = transport.Shared()
+		// The innermost SDK boundary always strips reserved host-signal headers;
+		// a nil source makes it strip-only when workspace policy disables signal
+		// collection.
+		sdkBase = riskcontrol.NewTransport(sdkBase, hostSignalSource)
+		sdkTransport := wrapSDKTransport(sdkBase)
 		opts = append(opts, lark.WithHttpClient(&http.Client{
-			Transport:     buildSDKTransport(),
+			Transport:     sdkTransport,
 			CheckRedirect: safeRedirectPolicy,
 		}))
 		ep := core.ResolveEndpoints(acct.Brand)
@@ -152,9 +165,8 @@ func cachedLarkClientFunc(f *Factory) func() (*lark.Client, error) {
 	})
 }
 
-func buildSDKTransport() http.RoundTripper {
-	var sdkTransport http.RoundTripper = transport.Shared()
-	sdkTransport = &RetryTransport{Base: sdkTransport}
+func wrapSDKTransport(next http.RoundTripper) http.RoundTripper {
+	var sdkTransport http.RoundTripper = &RetryTransport{Base: next}
 	sdkTransport = &UserAgentTransport{Base: sdkTransport}
 	sdkTransport = &BuildHeaderTransport{Base: sdkTransport}
 	sdkTransport = &auth.SecurityPolicyTransport{Base: sdkTransport}

internal/cmdutil/factory_http_test.go

@@ -6,10 +6,15 @@ package cmdutil
 import (
 	"io"
 	"testing"
+
+	"github.com/larksuite/cli/internal/core"
 )
 
 func TestCachedHttpClientFunc_ReturnsSameInstance(t *testing.T) {
-	fn := cachedHttpClientFunc(&Factory{IOStreams: &IOStreams{ErrOut: io.Discard}})
+	isEnabled := false
+	f, _, _, _ := TestFactory(t, &core.CliConfig{AppID: "test-app"})
+	f.IOStreams.ErrOut = io.Discard
+	fn := cachedHttpClientFunc(f, staticWorkspaceConfig{config: &core.MultiAppConfig{RiskControl: &isEnabled}})
 
 	c1, err := fn()
 	if err != nil {
@@ -29,7 +34,10 @@ func TestCachedHttpClientFunc_ReturnsSameInstance(t *testing.T) {
 }
 
 func TestCachedHttpClientFunc_HasTimeout(t *testing.T) {
-	fn := cachedHttpClientFunc(&Factory{IOStreams: &IOStreams{ErrOut: io.Discard}})
+	isEnabled := false
+	f, _, _, _ := TestFactory(t, &core.CliConfig{AppID: "test-app"})
+	f.IOStreams.ErrOut = io.Discard
+	fn := cachedHttpClientFunc(f, staticWorkspaceConfig{config: &core.MultiAppConfig{RiskControl: &isEnabled}})
 	c, _ := fn()
 	if c.Timeout == 0 {
 		t.Error("expected non-zero timeout")
@@ -37,7 +45,10 @@ func TestCachedHttpClientFunc_HasTimeout(t *testing.T) {
 }
 
 func TestCachedHttpClientFunc_HasRedirectPolicy(t *testing.T) {
-	fn := cachedHttpClientFunc(&Factory{IOStreams: &IOStreams{ErrOut: io.Discard}})
+	isEnabled := false
+	f, _, _, _ := TestFactory(t, &core.CliConfig{AppID: "test-app"})
+	f.IOStreams.ErrOut = io.Discard
+	fn := cachedHttpClientFunc(f, staticWorkspaceConfig{config: &core.MultiAppConfig{RiskControl: &isEnabled}})
 	c, _ := fn()
 	if c.CheckRedirect == nil {
 		t.Error("expected CheckRedirect to be set (safeRedirectPolicy)")

internal/cmdutil/factory_proxy_warn_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	_ "github.com/larksuite/cli/extension/credential/env" // registers the env-backed account provider
+	"github.com/larksuite/cli/internal/core"
 	"github.com/larksuite/cli/internal/envvars"
 )
 
@@ -36,13 +37,15 @@ var proxyWarnGateCases = []struct {
 // TestCachedHttpClientFunc_ProxyWarnGate verifies the http-client init path
 // invokes WarnIfProxied only when stderr is an interactive terminal.
 func TestCachedHttpClientFunc_ProxyWarnGate(t *testing.T) {
+	isEnabled := false
 	for _, tc := range proxyWarnGateCases {
 		t.Run(tc.name, func(t *testing.T) {
 			calls := installProxyWarnSpy(t)
 
-			fn := cachedHttpClientFunc(&Factory{IOStreams: &IOStreams{
-				ErrOut: io.Discard, StderrIsTerminal: tc.terminal,
-			}})
+			f, _, _, _ := TestFactory(t, &core.CliConfig{AppID: "test-app"})
+			f.IOStreams.ErrOut = io.Discard
+			f.IOStreams.StderrIsTerminal = tc.terminal
+			fn := cachedHttpClientFunc(f, staticWorkspaceConfig{config: &core.MultiAppConfig{RiskControl: &isEnabled}})
 			if _, err := fn(); err != nil {
 				t.Fatalf("http client init: %v", err)
 			}
@@ -73,7 +76,7 @@ func TestCachedLarkClientFunc_ProxyWarnGate(t *testing.T) {
 			// normalizeStreams copies the struct (out := *s), so the
 			// StderrIsTerminal field survives into f.IOStreams.
 			f := NewDefault(&IOStreams{ErrOut: io.Discard, StderrIsTerminal: tc.terminal}, InvocationContext{})
-			if _, err := cachedLarkClientFunc(f)(); err != nil {
+			if _, err := cachedLarkClientFunc(f, nil)(); err != nil {
 				t.Fatalf("lark client init: %v", err)
 			}
 

internal/cmdutil/risk_control.go

@@ -0,0 +1,28 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"github.com/larksuite/cli/internal/core"
+	"github.com/larksuite/cli/internal/riskcontrol"
+)
+
+type workspaceConfigSource interface {
+	MultiAppConfig() (*core.MultiAppConfig, error)
+}
+
+// resolveSDKHostSignalSource applies workspace policy at the SDK transport
+// boundary.
+func resolveSDKHostSignalSource(config workspaceConfigSource) riskcontrol.Source {
+	if config == nil {
+		return nil
+	}
+	workspace, configErr := config.MultiAppConfig()
+	// Default-on means an existing config with no explicit preference. Absent
+	// or unreadable config cannot authorize host-signal collection.
+	if configErr != nil || !workspace.RiskControlEnabled() {
+		return nil
+	}
+	return riskcontrol.NewHostSource()
+}

internal/cmdutil/risk_control_test.go

@@ -0,0 +1,45 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/larksuite/cli/internal/core"
+)
+
+type staticWorkspaceConfig struct {
+	config *core.MultiAppConfig
+	err    error
+}
+
+func (s staticWorkspaceConfig) MultiAppConfig() (*core.MultiAppConfig, error) {
+	return s.config, s.err
+}
+
+func TestResolveSDKHostSignalSource(t *testing.T) {
+	disabled := false
+	tests := []struct {
+		name       string
+		config     workspaceConfigSource
+		wantSource bool
+	}{
+		{name: "workspace default on", config: staticWorkspaceConfig{config: &core.MultiAppConfig{}}, wantSource: true},
+		{name: "workspace opt-out", config: staticWorkspaceConfig{config: &core.MultiAppConfig{RiskControl: &disabled}}},
+		{name: "missing config", config: staticWorkspaceConfig{err: errors.New("file does not exist")}},
+		{name: "unreadable config", config: staticWorkspaceConfig{err: errors.New("permission denied")}},
+		{name: "nil config value", config: staticWorkspaceConfig{}},
+		{name: "nil config source"},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			got := resolveSDKHostSignalSource(test.config)
+			if (got != nil) != test.wantSource {
+				t.Fatalf("resolveSDKHostSignalSource() = %T, wantSource %t", got, test.wantSource)
+			}
+		})
+	}
+}

internal/cmdutil/transport_test.go

@@ -15,6 +15,7 @@ import (
 
 	exttransport "github.com/larksuite/cli/extension/transport"
 	internalauth "github.com/larksuite/cli/internal/auth"
+	"github.com/larksuite/cli/internal/riskcontrol"
 )
 
 type roundTripFunc func(*http.Request) (*http.Response, error)
@@ -91,13 +92,13 @@ func TestRetryTransport_DefaultNoRetry(t *testing.T) {
 }
 
 // ---------------------------------------------------------------------------
-// buildSDKTransport chain composition
+// wrapSDKTransport chain composition
 // ---------------------------------------------------------------------------
 
-func TestBuildSDKTransport_IncludesRetryTransport(t *testing.T) {
-	transport := buildSDKTransport()
+func TestWrapSDKTransport_IncludesRetryTransport(t *testing.T) {
+	transport := wrapSDKTransport(riskcontrol.NewTransport(http.DefaultTransport, nil))
 
-	// Chain: SecurityPolicy → BuildHeader → UserAgent → Retry → Base
+	// Chain: SecurityPolicy → BuildHeader → UserAgent → Retry → RiskControl → Base
 	sec, ok := transport.(*internalauth.SecurityPolicyTransport)
 	if !ok {
 		t.Fatalf("outer transport type = %T, want *auth.SecurityPolicyTransport", transport)
@@ -110,18 +111,23 @@ func TestBuildSDKTransport_IncludesRetryTransport(t *testing.T) {
 	if !ok {
 		t.Fatalf("layer after BuildHeader = %T, want *UserAgentTransport", bh.Base)
 	}
-	if _, ok := ua.Base.(*RetryTransport); !ok {
+	retry, ok := ua.Base.(*RetryTransport)
+	if !ok {
 		t.Fatalf("inner transport type = %T, want *RetryTransport", ua.Base)
 	}
+	if _, ok := retry.Base.(*riskcontrol.Transport); !ok {
+		t.Fatalf("layer after Retry = %T, want *riskcontrol.Transport", retry.Base)
+	}
 }
 
-func TestBuildSDKTransport_WithExtension(t *testing.T) {
+func TestWrapSDKTransport_WithExtension(t *testing.T) {
+	previous := exttransport.GetProvider()
 	exttransport.Register(&stubTransportProvider{})
-	t.Cleanup(func() { exttransport.Register(nil) })
+	t.Cleanup(func() { exttransport.Register(previous) })
 
-	transport := buildSDKTransport()
+	transport := wrapSDKTransport(riskcontrol.NewTransport(http.DefaultTransport, nil))
 
-	// Chain: extensionMiddleware → SecurityPolicy → BuildHeader → UserAgent → Retry → Base
+	// Chain: extensionMiddleware → SecurityPolicy → BuildHeader → UserAgent → Retry → RiskControl → Base
 	mid, ok := transport.(*extensionMiddleware)
 	if !ok {
 		t.Fatalf("outer transport type = %T, want *extensionMiddleware", transport)
@@ -138,17 +144,23 @@ func TestBuildSDKTransport_WithExtension(t *testing.T) {
 	if !ok {
 		t.Fatalf("layer after BuildHeader = %T, want *UserAgentTransport", bh.Base)
 	}
-	if _, ok := ua.Base.(*RetryTransport); !ok {
+	retry, ok := ua.Base.(*RetryTransport)
+	if !ok {
 		t.Fatalf("innermost transport type = %T, want *RetryTransport", ua.Base)
 	}
+	if _, ok := retry.Base.(*riskcontrol.Transport); !ok {
+		t.Fatalf("layer after Retry = %T, want *riskcontrol.Transport", retry.Base)
+	}
 }
 
-func TestBuildSDKTransport_WithoutExtension(t *testing.T) {
+func TestWrapSDKTransport_WithoutExtension(t *testing.T) {
+	previous := exttransport.GetProvider()
 	exttransport.Register(nil)
+	t.Cleanup(func() { exttransport.Register(previous) })
 
-	transport := buildSDKTransport()
+	transport := wrapSDKTransport(riskcontrol.NewTransport(http.DefaultTransport, nil))
 
-	// Chain: SecurityPolicy → BuildHeader → UserAgent → Retry → Base
+	// Chain: SecurityPolicy → BuildHeader → UserAgent → Retry → RiskControl → Base
 	sec, ok := transport.(*internalauth.SecurityPolicyTransport)
 	if !ok {
 		t.Fatalf("outer transport type = %T, want *auth.SecurityPolicyTransport", transport)
@@ -161,9 +173,13 @@ func TestBuildSDKTransport_WithoutExtension(t *testing.T) {
 	if !ok {
 		t.Fatalf("layer after BuildHeader = %T, want *UserAgentTransport", bh.Base)
 	}
-	if _, ok := ua.Base.(*RetryTransport); !ok {
+	retry, ok := ua.Base.(*RetryTransport)
+	if !ok {
 		t.Fatalf("inner transport type = %T, want *RetryTransport", ua.Base)
 	}
+	if _, ok := retry.Base.(*riskcontrol.Transport); !ok {
+		t.Fatalf("layer after Retry = %T, want *riskcontrol.Transport", retry.Base)
+	}
 }
 
 // ---------------------------------------------------------------------------
@@ -261,6 +277,40 @@ func (buildTamperingInterceptor) PreRoundTrip(req *http.Request) func(*http.Resp
 	return nil
 }
 
+type riskHeaderTamperingInterceptor struct{}
+
+func (riskHeaderTamperingInterceptor) PreRoundTrip(req *http.Request) func(*http.Response, error) {
+	req.Header.Set(riskcontrol.HeaderOSType, "extension-value")
+	req.Header.Set(riskcontrol.HeaderProductModel, "extension-value")
+	return nil
+}
+
+func TestWrapSDKTransport_StripsExtensionRiskHeaders(t *testing.T) {
+	previous := exttransport.GetProvider()
+	exttransport.Register(&stubTransportProvider{interceptor: riskHeaderTamperingInterceptor{}})
+	t.Cleanup(func() { exttransport.Register(previous) })
+
+	var received http.Header
+	network := roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		received = req.Header.Clone()
+		return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}, nil
+	})
+	req, err := http.NewRequest(http.MethodGet, "https://open.feishu.cn/open-apis/test", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	req.Header.Set("Authorization", "Bearer token")
+
+	resp, err := wrapSDKTransport(riskcontrol.NewTransport(network, nil)).RoundTrip(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	resp.Body.Close()
+	if received.Get(riskcontrol.HeaderOSType) != "" || received.Get(riskcontrol.HeaderProductModel) != "" {
+		t.Fatalf("extension risk headers reached network: %v", received)
+	}
+}
+
 // TestBuildHeaderTransport_SDKChain_OverridesTamperedHeader verifies that the
 // X-Cli-Build header is force-written by BuildHeaderTransport in the SDK
 // transport chain, even when an extension tries to delete or spoof it. This
@@ -277,7 +327,7 @@ func TestBuildHeaderTransport_SDKChain_OverridesTamperedHeader(t *testing.T) {
 	exttransport.Register(&stubTransportProvider{interceptor: buildTamperingInterceptor{}})
 	t.Cleanup(func() { exttransport.Register(nil) })
 
-	// Replicate the SDK chain layering used by buildSDKTransport.
+	// Replicate the SDK chain layering used by wrapSDKTransport.
 	var base http.RoundTripper = http.DefaultTransport
 	base = &RetryTransport{Base: base}
 	base = &UserAgentTransport{Base: base}

internal/core/config.go

@@ -60,11 +60,18 @@ func (a *AppConfig) ProfileName() string {
 // MultiAppConfig is the multi-app config file format.
 type MultiAppConfig struct {
 	StrictMode  StrictMode  `json:"strictMode,omitempty"`
+	RiskControl *bool       `json:"riskControl,omitempty"`
 	CurrentApp  string      `json:"currentApp,omitempty"`
 	PreviousApp string      `json:"previousApp,omitempty"`
 	Apps        []AppConfig `json:"apps"`
 }
 
+// RiskControlEnabled resolves the workspace policy. An omitted preference
+// keeps the default-on account-protection behavior.
+func (m *MultiAppConfig) RiskControlEnabled() bool {
+	return m != nil && (m.RiskControl == nil || *m.RiskControl)
+}
+
 // CurrentAppConfig returns the currently active app config.
 // Resolution priority: profileOverride > CurrentApp field > Apps[0].
 func (m *MultiAppConfig) CurrentAppConfig(profileOverride string) *AppConfig {

internal/core/config_snapshot.go

@@ -0,0 +1,37 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package core
+
+import (
+	"io/fs"
+	"sync"
+)
+
+// ConfigSnapshot lazily captures one stable view of config.json for a CLI
+// invocation. All runtime consumers share the same load result so account and
+// workspace policy resolution cannot observe different file revisions. Callers
+// must treat the returned config as read-only.
+type ConfigSnapshot struct {
+	load func() (*MultiAppConfig, error)
+}
+
+// NewConfigSnapshot creates a lazily loaded invocation-scoped config snapshot.
+func NewConfigSnapshot() *ConfigSnapshot {
+	return newConfigSnapshot(LoadMultiAppConfig)
+}
+
+func newConfigSnapshot(load func() (*MultiAppConfig, error)) *ConfigSnapshot {
+	if load == nil {
+		return &ConfigSnapshot{}
+	}
+	return &ConfigSnapshot{load: sync.OnceValues(load)}
+}
+
+// MultiAppConfig returns the captured persistent config and load error.
+func (s *ConfigSnapshot) MultiAppConfig() (*MultiAppConfig, error) {
+	if s == nil || s.load == nil {
+		return nil, fs.ErrNotExist
+	}
+	return s.load()
+}

internal/core/config_snapshot_test.go

@@ -0,0 +1,58 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package core
+
+import (
+	"errors"
+	"io/fs"
+	"testing"
+)
+
+func TestConfigSnapshotLoadsOnce(t *testing.T) {
+	calls := 0
+	want := &MultiAppConfig{}
+	snapshot := newConfigSnapshot(func() (*MultiAppConfig, error) {
+		calls++
+		return want, nil
+	})
+
+	for range 2 {
+		config, err := snapshot.MultiAppConfig()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if config != want {
+			t.Fatal("snapshot returned a different config instance")
+		}
+	}
+	if calls != 1 {
+		t.Fatalf("config loads = %d, want 1", calls)
+	}
+}
+
+func TestConfigSnapshotZeroValueIsMissing(t *testing.T) {
+	config, err := (&ConfigSnapshot{}).MultiAppConfig()
+	if config != nil || !errors.Is(err, fs.ErrNotExist) {
+		t.Fatalf("MultiAppConfig() = (%v, %v), want (nil, fs.ErrNotExist)", config, err)
+	}
+}
+
+func TestConfigSnapshotCachesError(t *testing.T) {
+	calls := 0
+	want := errors.New("load failed")
+	snapshot := newConfigSnapshot(func() (*MultiAppConfig, error) {
+		calls++
+		return nil, want
+	})
+
+	for range 2 {
+		config, err := snapshot.MultiAppConfig()
+		if config != nil || !errors.Is(err, want) {
+			t.Fatalf("MultiAppConfig() = (%v, %v), want (nil, %v)", config, err, want)
+		}
+	}
+	if calls != 1 {
+		t.Fatalf("config loads = %d, want 1", calls)
+	}
+}

internal/core/config_test.go

@@ -60,7 +60,9 @@ func TestAppConfig_LangOmitEmpty(t *testing.T) {
 }
 
 func TestMultiAppConfig_RoundTrip(t *testing.T) {
+	disabled := false
 	config := &MultiAppConfig{
+		RiskControl: &disabled,
 		Apps: []AppConfig{{
 			AppId: "cli_test", AppSecret: PlainSecret("s"),
 			Brand: BrandLark, Lang: "zh", Users: []AppUser{},
@@ -84,6 +86,9 @@ func TestMultiAppConfig_RoundTrip(t *testing.T) {
 	if got.Apps[0].Brand != BrandLark {
 		t.Errorf("Brand = %q, want %q", got.Apps[0].Brand, BrandLark)
 	}
+	if got.RiskControl == nil || *got.RiskControl {
+		t.Errorf("RiskControl = %v, want explicit false", got.RiskControl)
+	}
 }
 
 func TestResolveConfigFromMulti_RejectsSecretKeyMismatch(t *testing.T) {

internal/riskcontrol/osmodel.go

@@ -0,0 +1,142 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+// Package deviceinfo collects the platform hardware product model and the
+// platform values used by device-related risk-control headers.
+package riskcontrol
+
+import (
+	"runtime"
+	"strings"
+	"sync"
+	"unicode"
+	"unicode/utf8"
+
+	"golang.org/x/net/http/httpguts"
+)
+
+// OSType is the server-side risk-control operating-system enum.
+type OSType string
+
+// OS type enum values for X-Agent-Os-Type.
+const (
+	OSTypeUnknown = "0"
+	OSTypeWindows = "1"
+	OSTypeLinux   = "2"
+	OSTypeMacOS   = "3"
+)
+
+const (
+	// TerminalTypePC is the fixed X-Agent-Terminal-Type value for the CLI.
+	TerminalTypePC = "1"
+
+	// Unknown is used when the hardware product model cannot be collected.
+	Unknown = "Unknown"
+
+	// deviceModelMaxBytes bounds the value added to X-Agent-Device-Type.
+	// Device models are short identifiers; a larger value is treated as
+	// malformed rather than truncated so the header never misrepresents it.
+	deviceModelMaxBytes = 256
+)
+
+// Snapshot contains the deliberately small risk-control signal set.
+// ProductModel is omitted when the platform cannot provide a safe value.
+type Snapshot struct {
+	OSType       OSType
+	ProductModel string
+}
+
+// Source supplies one immutable process-level snapshot.
+type Source interface {
+	Snapshot() Snapshot
+}
+
+// HostSource lazily reads host signals once, after outbound policy authorizes
+// the first request. Failed probes are cached and are not retried per request.
+type HostSource struct {
+	once      sync.Once
+	value     Snapshot
+	readModel func() string
+}
+
+// NewHostSource creates the production host signal source.
+func NewHostSource() *HostSource {
+	return &HostSource{readModel: readDeviceModel}
+}
+
+// Snapshot returns the cached host signal snapshot.
+func (s *HostSource) Snapshot() Snapshot {
+	if s == nil {
+		return Snapshot{}
+	}
+	s.once.Do(func() {
+		readModel := s.readModel
+		if readModel == nil {
+			readModel = readDeviceModel
+		}
+		s.value = Snapshot{
+			OSType:       GetOSType(OSName()),
+			ProductModel: normalizeDeviceModel(readModel()),
+		}
+	})
+	return s.value
+}
+
+// normalizeModel removes non-printable characters and returns a model only
+// when the remaining text is safe to use as an HTTP header value. Input that
+// cannot produce a valid model is rejected so Get can fall back to Unknown.
+func normalizeDeviceModel(model string) string {
+	if !utf8.ValidString(model) {
+		return ""
+	}
+	model = strings.Map(func(r rune) rune {
+		switch {
+		case r == '\r' || r == '\n' || r == '\x00':
+			return -1
+		case unicode.IsSpace(r):
+			return ' '
+		case unicode.IsPrint(r):
+			return r
+		default:
+			return -1
+		}
+	}, model)
+
+	model = strings.Join(strings.Fields(model), " ")
+
+	if model == "" || len(model) > deviceModelMaxBytes {
+		return ""
+	}
+	if !httpguts.ValidHeaderFieldValue(model) {
+		return ""
+	}
+	return model
+}
+
+// GetOSType maps a platform name to the X-Agent-Os-Type enum.
+func GetOSType(osName string) OSType {
+	switch osName {
+	case "Windows":
+		return OSTypeWindows
+	case "Linux":
+		return OSTypeLinux
+	case "MacOS":
+		return OSTypeMacOS
+	default:
+		return OSTypeUnknown
+	}
+}
+
+// OSName returns the platform name used by GetOSType.
+func OSName() string {
+	switch runtime.GOOS {
+	case "darwin":
+		return "MacOS"
+	case "windows":
+		return "Windows"
+	case "linux":
+		return "Linux"
+	default:
+		return runtime.GOOS
+	}
+}

internal/riskcontrol/osmodel_darwin.go

@@ -0,0 +1,27 @@
+//go:build darwin
+
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import "golang.org/x/sys/unix"
+
+// readDeviceModel reads the current product key first and falls back to the
+// legacy model key. Trying both keys is more robust than branching on a macOS
+// version because virtualized or restricted environments may expose only one.
+func readDeviceModel() string {
+	return readDarwinDeviceModel(unix.Sysctl)
+}
+
+func readDarwinDeviceModel(readSysctl func(string) (string, error)) string {
+	for _, key := range [...]string{"hw.product", "hw.model"} {
+		model, err := readSysctl(key)
+		if err == nil {
+			if model = normalizeDeviceModel(model); model != "" {
+				return model
+			}
+		}
+	}
+	return ""
+}

internal/riskcontrol/osmodel_darwin_test.go

@@ -0,0 +1,48 @@
+//go:build darwin
+
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import (
+	"errors"
+	"reflect"
+	"testing"
+)
+
+func TestReadDarwinDeviceModelPrefersProductAndFallsBackToModel(t *testing.T) {
+	t.Run("product available", func(t *testing.T) {
+		var keys []string
+		got := readDarwinDeviceModel(func(key string) (string, error) {
+			keys = append(keys, key)
+			if key == "hw.product" {
+				return "Mac16,1", nil
+			}
+			return "", errors.New("unexpected fallback")
+		})
+		if got != "Mac16,1" {
+			t.Fatalf("model = %q, want %q", got, "Mac16,1")
+		}
+		if want := []string{"hw.product"}; !reflect.DeepEqual(keys, want) {
+			t.Fatalf("sysctl keys = %v, want %v", keys, want)
+		}
+	})
+
+	t.Run("product unavailable", func(t *testing.T) {
+		var keys []string
+		got := readDarwinDeviceModel(func(key string) (string, error) {
+			keys = append(keys, key)
+			if key == "hw.model" {
+				return "MacBookPro18,3", nil
+			}
+			return "", errors.New("not available")
+		})
+		if got != "MacBookPro18,3" {
+			t.Fatalf("model = %q, want %q", got, "MacBookPro18,3")
+		}
+		if want := []string{"hw.product", "hw.model"}; !reflect.DeepEqual(keys, want) {
+			t.Fatalf("sysctl keys = %v, want %v", keys, want)
+		}
+	})
+}

internal/riskcontrol/osmodel_linux.go

@@ -0,0 +1,17 @@
+//go:build linux
+
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+// readDeviceModel returns a stable device model for Linux. DMI and device-tree
+// values vary widely and can expose the host or virtualization platform when
+// the CLI runs in a container or sandbox.
+func readDeviceModel() string {
+	return readLinuxDeviceModel()
+}
+
+func readLinuxDeviceModel() string {
+	return "linux"
+}

internal/riskcontrol/osmodel_linux_test.go

@@ -0,0 +1,20 @@
+//go:build linux
+
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import "testing"
+
+func TestReadDeviceModelReturnsLinux(t *testing.T) {
+	if got := readDeviceModel(); got != "linux" {
+		t.Fatalf("readDeviceModel() = %q, want %q", got, "linux")
+	}
+}
+
+func TestReadLinuxDeviceModel(t *testing.T) {
+	if got := readLinuxDeviceModel(); got != "linux" {
+		t.Fatalf("readLinuxDeviceModel() = %q, want %q", got, "linux")
+	}
+}

internal/riskcontrol/osmodel_other.go

@@ -0,0 +1,11 @@
+//go:build !darwin && !windows && !linux
+
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+// readDeviceModel returns an empty model on unsupported platforms.
+func readDeviceModel() string {
+	return ""
+}

internal/riskcontrol/osmodel_test.go

@@ -0,0 +1,143 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"unicode"
+)
+
+func TestHostSourceCachesNonEmptyModel(t *testing.T) {
+	calls := 0
+	s := &HostSource{readModel: func() string {
+		calls++
+		return "  MacBookPro18,3\n"
+	}}
+
+	if got := s.Snapshot(); got.ProductModel != "MacBookPro18,3" {
+		t.Fatalf("first Snapshot().ProductModel = %q, want %q", got.ProductModel, "MacBookPro18,3")
+	}
+	if got := s.Snapshot(); got.ProductModel != "MacBookPro18,3" {
+		t.Fatalf("second Snapshot().ProductModel = %q, want cached model", got.ProductModel)
+	}
+	if calls != 1 {
+		t.Fatalf("read called %d times, want 1", calls)
+	}
+}
+
+func TestHostSourceCachesEmptyModel(t *testing.T) {
+	calls := 0
+	s := &HostSource{readModel: func() string {
+		calls++
+		return ""
+	}}
+
+	if got := s.Snapshot(); got.ProductModel != "" {
+		t.Fatalf("first Snapshot().ProductModel = %q, want empty", got.ProductModel)
+	}
+	if got := s.Snapshot(); got.ProductModel != "" {
+		t.Fatalf("second Snapshot().ProductModel = %q, want cached empty result", got.ProductModel)
+	}
+	if calls != 1 {
+		t.Fatalf("read called %d times, want 1", calls)
+	}
+}
+
+func TestHostSourceReadsOnceAcrossConcurrentCalls(t *testing.T) {
+	var calls atomic.Int32
+	s := &HostSource{readModel: func() string {
+		calls.Add(1)
+		return "ThinkPad X1 Carbon"
+	}}
+
+	const goroutines = 32
+	var wg sync.WaitGroup
+	wg.Add(goroutines)
+	for i := 0; i < goroutines; i++ {
+		go func() {
+			defer wg.Done()
+			snapshot := s.Snapshot()
+			if snapshot.ProductModel != "ThinkPad X1 Carbon" {
+				t.Errorf("Snapshot().ProductModel = %q, want %q", snapshot.ProductModel, "ThinkPad X1 Carbon")
+			}
+		}()
+	}
+	wg.Wait()
+
+	if got := calls.Load(); got != 1 {
+		t.Fatalf("read called %d times, want 1", got)
+	}
+}
+
+func TestNormalizeDeviceModel(t *testing.T) {
+	tests := []struct {
+		name  string
+		model string
+		want  string
+	}{
+		{name: "trims surrounding whitespace", model: "  MacBookPro18,3\n", want: "MacBookPro18,3"},
+		{name: "trims device tree terminator", model: "Raspberry Pi 5\x00", want: "Raspberry Pi 5"},
+		{name: "allows printable Unicode", model: "联想 ThinkPad X1", want: "联想 ThinkPad X1"},
+		{name: "rejects empty", model: " \t\r\n"},
+		{name: "rejects invalid UTF-8", model: string([]byte{'M', 0xff, '1'})},
+		{name: "removes CRLF", model: "model\r\nname", want: "modelname"},
+		{name: "normalizes tab", model: "model\tname", want: "model name"},
+		{name: "removes NUL", model: "model\x00name", want: "modelname"},
+		{name: "removes control character", model: "model\x1fname", want: "modelname"},
+		{name: "removes DEL", model: "model\x7fname", want: "modelname"},
+		{name: "normalizes Unicode line separator", model: "model\u2028name", want: "model name"},
+		{name: "collapses whitespace", model: "  model\t \u00a0 name  ", want: "model name"},
+		{name: "accepts maximum byte length", model: strings.Repeat("a", deviceModelMaxBytes), want: strings.Repeat("a", deviceModelMaxBytes)},
+		{name: "rejects overlong value", model: strings.Repeat("a", deviceModelMaxBytes+1)},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := normalizeDeviceModel(tt.model); got != tt.want {
+				t.Fatalf("normalizeDeviceModel(%q) = %q, want %q", tt.model, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestNormalizeDeviceModelRemovesHTTPControlBytes(t *testing.T) {
+	for value := 0; value <= 0x7f; value++ {
+		if value >= 0x20 && value < 0x7f {
+			continue
+		}
+		t.Run(fmt.Sprintf("0x%02x", value), func(t *testing.T) {
+			model := "model" + string(rune(value)) + "name"
+			want := "modelname"
+			if value != '\r' && value != '\n' && value != '\x00' && unicode.IsSpace(rune(value)) {
+				want = "model name"
+			}
+			if got := normalizeDeviceModel(model); got != want {
+				t.Fatalf("normalizeDeviceModel(%q) = %q, want %q", model, got, want)
+			}
+		})
+	}
+}
+
+func TestGetOSType(t *testing.T) {
+	tests := []struct {
+		name string
+		want OSType
+	}{
+		{name: "Windows", want: OSTypeWindows},
+		{name: "Linux", want: OSTypeLinux},
+		{name: "MacOS", want: OSTypeMacOS},
+		{name: "unknown", want: OSTypeUnknown},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := GetOSType(tt.name); got != tt.want {
+				t.Errorf("GetOSType(%q) = %q, want %q", tt.name, got, tt.want)
+			}
+		})
+	}
+}

internal/riskcontrol/osmodel_windows.go

@@ -0,0 +1,44 @@
+//go:build windows
+
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import "golang.org/x/sys/windows/registry"
+
+// systemInfoRegistryPaths lists registry locations in device-model lookup order.
+var systemInfoRegistryPaths = [...]string{
+	`HARDWARE\DESCRIPTION\System\BIOS`,
+	`SYSTEM\CurrentControlSet\Control\SystemInformation`,
+	`SYSTEM\HardwareConfig\Current`,
+}
+
+// readDeviceModel returns the first product name found in the Windows registry.
+func readDeviceModel() string {
+	return readWindowsDeviceModel(readWindowsRegistryModel)
+}
+
+func readWindowsRegistryModel(path string) (string, error) {
+	key, err := registry.OpenKey(registry.LOCAL_MACHINE, path, registry.READ)
+	if err != nil {
+		return "", err
+	}
+	defer key.Close()
+
+	model, _, err := key.GetStringValue("SystemProductName")
+	return model, err
+}
+
+func readWindowsDeviceModel(readRegistryModel func(string) (string, error)) string {
+	for _, path := range systemInfoRegistryPaths {
+		model, err := readRegistryModel(path)
+		if err != nil {
+			continue
+		}
+		if model = normalizeDeviceModel(model); model != "" {
+			return model
+		}
+	}
+	return ""
+}

internal/riskcontrol/osmodel_windows_test.go

@@ -0,0 +1,78 @@
+//go:build windows
+
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import (
+	"errors"
+	"reflect"
+	"testing"
+)
+
+func TestReadWindowsDeviceModelFallback(t *testing.T) {
+	readError := errors.New("registry read failed")
+	tests := []struct {
+		name      string
+		values    map[string]string
+		errors    map[string]error
+		want      string
+		wantPaths []string
+	}{
+		{
+			name:      "first path wins",
+			values:    map[string]string{systemInfoRegistryPaths[0]: "Surface Laptop"},
+			want:      "Surface Laptop",
+			wantPaths: []string{systemInfoRegistryPaths[0]},
+		},
+		{
+			name: "read failure falls back",
+			errors: map[string]error{
+				systemInfoRegistryPaths[0]: readError,
+			},
+			values: map[string]string{
+				systemInfoRegistryPaths[1]: "ThinkPad X1 Carbon",
+			},
+			want:      "ThinkPad X1 Carbon",
+			wantPaths: systemInfoRegistryPaths[:2],
+		},
+		{
+			name: "empty normalized value falls back",
+			values: map[string]string{
+				systemInfoRegistryPaths[0]: " \r\n\x00",
+				systemInfoRegistryPaths[1]: "Latitude 7450",
+			},
+			want:      "Latitude 7450",
+			wantPaths: systemInfoRegistryPaths[:2],
+		},
+		{
+			name: "all paths fail",
+			errors: map[string]error{
+				systemInfoRegistryPaths[0]: readError,
+				systemInfoRegistryPaths[1]: readError,
+				systemInfoRegistryPaths[2]: readError,
+			},
+			wantPaths: systemInfoRegistryPaths[:],
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var paths []string
+			got := readWindowsDeviceModel(func(path string) (string, error) {
+				paths = append(paths, path)
+				if err := tt.errors[path]; err != nil {
+					return "", err
+				}
+				return tt.values[path], nil
+			})
+			if got != tt.want {
+				t.Fatalf("model = %q, want %q", got, tt.want)
+			}
+			if !reflect.DeepEqual(paths, tt.wantPaths) {
+				t.Fatalf("registry paths = %v, want %v", paths, tt.wantPaths)
+			}
+		})
+	}
+}

internal/riskcontrol/transport.go

@@ -0,0 +1,138 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import (
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/larksuite/cli/internal/core"
+	internaltransport "github.com/larksuite/cli/internal/transport"
+)
+
+const (
+	HeaderProductModel = "X-Agent-Device-Type"
+	HeaderOSType       = "X-Agent-Os-Type"
+)
+
+var restrictedHeaders = [...]string{HeaderProductModel, HeaderOSType}
+
+// Transport is the feature's final outbound boundary. It removes caller- or
+// extension-supplied signal headers first and writes trusted values only after
+// authorizing an official SDK origin and authentication state.
+type Transport struct {
+	next   http.RoundTripper
+	source Source
+}
+
+// NewTransport creates the final SDK outbound policy boundary. A nil source
+// disables collection and injection while preserving restricted-header
+// stripping for opt-out and extension-credential requests.
+func NewTransport(next http.RoundTripper, source Source) *Transport {
+	if next == nil {
+		next = internaltransport.Fallback()
+	}
+	return &Transport{
+		next:   next,
+		source: source,
+	}
+}
+
+// RoundTrip implements http.RoundTripper.
+func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
+	req = req.Clone(req.Context())
+	if req.Header == nil {
+		req.Header = make(http.Header)
+	}
+	stripRestrictedHeaders(req.Header)
+
+	if t.source != nil && t.routeAllowsSignals(req) {
+		snapshot := t.source.Snapshot()
+		if isSupportedOSType(snapshot.OSType) {
+			req.Header.Set(HeaderOSType, string(snapshot.OSType))
+		}
+		if model := normalizeDeviceModel(snapshot.ProductModel); model != "" {
+			req.Header.Set(HeaderProductModel, model)
+		}
+	}
+	return t.next.RoundTrip(req)
+}
+
+func isSupportedOSType(value OSType) bool {
+	switch value {
+	case OSTypeWindows, OSTypeLinux, OSTypeMacOS:
+		return true
+	default:
+		return false
+	}
+}
+
+func stripRestrictedHeaders(header http.Header) {
+	for name := range header {
+		for _, restricted := range restrictedHeaders {
+			if strings.EqualFold(name, restricted) {
+				delete(header, name)
+				break
+			}
+		}
+	}
+}
+
+type origin struct {
+	scheme string
+	host   string
+	port   string
+}
+
+var officialFeishuOrigins = [...]origin{
+	apiOrigin(core.BrandFeishu, core.ResolveEndpoints(core.BrandFeishu).Open),
+	apiOrigin(core.BrandLark, core.ResolveEndpoints(core.BrandLark).Open),
+	apiOrigin(core.BrandFeishu, core.ResolveEndpoints(core.BrandFeishu).Accounts),
+	apiOrigin(core.BrandLark, core.ResolveEndpoints(core.BrandLark).Accounts),
+}
+
+func (t *Transport) routeAllowsSignals(req *http.Request) bool {
+	if req == nil || req.URL == nil {
+		return false
+	}
+	return isOfficialFeishuOrigin(originOf(req.URL))
+}
+
+func originOf(value *url.URL) origin {
+	if value == nil {
+		return origin{}
+	}
+	scheme := strings.ToLower(value.Scheme)
+	port := value.Port()
+	if port == "" {
+		switch scheme {
+		case "https":
+			port = "443"
+		case "http":
+			port = "80"
+		}
+	}
+	return origin{scheme: scheme, host: strings.ToLower(value.Hostname()), port: port}
+}
+
+func apiOrigin(brand core.LarkBrand, endpointURL string) origin {
+	endpoint, err := url.Parse(endpointURL)
+	if err != nil {
+		return origin{}
+	}
+	return originOf(endpoint)
+}
+
+func isOfficialFeishuOrigin(candidate origin) bool {
+	if candidate.scheme != "https" || candidate.port != "443" {
+		return false
+	}
+	for _, official := range officialFeishuOrigins {
+		if candidate == official {
+			return true
+		}
+	}
+	return false
+}

internal/riskcontrol/transport_test.go

@@ -0,0 +1,124 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package riskcontrol
+
+import (
+	"net/http"
+	"strings"
+	"sync/atomic"
+	"testing"
+)
+
+type roundTripFunc func(*http.Request) (*http.Response, error)
+
+func (f roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
+	return f(req)
+}
+
+type countingSource struct {
+	calls atomic.Int32
+}
+
+func (s *countingSource) Snapshot() Snapshot {
+	s.calls.Add(1)
+	return Snapshot{OSType: OSTypeMacOS, ProductModel: "Mac16,1"}
+}
+
+type staticSource Snapshot
+
+func (s staticSource) Snapshot() Snapshot { return Snapshot(s) }
+
+func TestTransportAuthorizesBeforeCollecting(t *testing.T) {
+	tests := []struct {
+		name          string
+		requestURL    string
+		authorization string
+		wantSignals   bool
+	}{
+		{name: "authenticated official HTTPS", requestURL: "https://open.feishu.cn/open-apis/test", authorization: "Bearer token", wantSignals: true},
+		{name: "Lark official HTTPS", requestURL: "https://open.larksuite.com/open-apis/test", authorization: "Bearer token", wantSignals: true},
+		{name: "official explicit HTTPS port", requestURL: "https://OPEN.FEISHU.CN:443/open-apis/test", authorization: "Bearer token", wantSignals: true},
+		{name: "unauthenticated", requestURL: "https://open.feishu.cn/open-apis/test", wantSignals: true},
+		{name: "official non-OpenAPI origin", requestURL: "https://accounts.feishu.cn/open-apis/test", authorization: "Bearer token", wantSignals: true},
+		{name: "off domain", requestURL: "https://example.com/test", authorization: "Bearer token", wantSignals: false},
+		{name: "lookalike", requestURL: "https://open.feishu.cn.evil.example/test", authorization: "Bearer token", wantSignals: false},
+		{name: "plain HTTP", requestURL: "http://open.feishu.cn/test", authorization: "Bearer token", wantSignals: false},
+		{name: "non-default port", requestURL: "https://open.feishu.cn:8443/test", authorization: "Bearer token", wantSignals: false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			source := &countingSource{}
+			var received http.Header
+			base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
+				received = req.Header.Clone()
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}, nil
+			})
+			req, err := http.NewRequest(http.MethodGet, test.requestURL, nil)
+			if err != nil {
+				t.Fatal(err)
+			}
+			req.Header.Set("Authorization", test.authorization)
+			req.Header.Set(HeaderOSType, "caller-value")
+			req.Header.Set(HeaderProductModel, "caller-value")
+			req.Header["x-agent-device-type"] = []string{"non-canonical-caller-value"}
+
+			resp, err := NewTransport(base, source).RoundTrip(req)
+			if err != nil {
+				t.Fatal(err)
+			}
+			resp.Body.Close()
+
+			gotSignals := received.Get(HeaderOSType) != ""
+			if gotSignals != test.wantSignals {
+				t.Fatalf("signals present = %t, want %t; headers=%v", gotSignals, test.wantSignals, received)
+			}
+			wantCalls := int32(0)
+			if test.wantSignals {
+				wantCalls = 1
+			}
+			if got := source.calls.Load(); got != wantCalls {
+				t.Fatalf("Snapshot calls = %d, want %d", got, wantCalls)
+			}
+			if got := req.Header.Get(HeaderOSType); got != "caller-value" {
+				t.Fatalf("caller request OS header = %q, want unchanged", got)
+			}
+			if got := req.Header.Get(HeaderProductModel); got != "caller-value" {
+				t.Fatalf("caller request product-model header = %q, want unchanged", got)
+			}
+			if !test.wantSignals {
+				for name := range received {
+					if strings.EqualFold(name, HeaderProductModel) || strings.EqualFold(name, HeaderOSType) {
+						t.Fatalf("restricted header leaked as %q", name)
+					}
+				}
+			}
+		})
+	}
+}
+
+func TestTransportValidatesSourceSnapshot(t *testing.T) {
+	var received http.Header
+	base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		received = req.Header.Clone()
+		return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}, nil
+	})
+	req, err := http.NewRequest(http.MethodGet, "https://open.feishu.cn/open-apis/test", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	req.Header.Set("Authorization", "Bearer token")
+
+	resp, err := NewTransport(base, staticSource{
+		OSType:       OSType("unsupported"),
+		ProductModel: "unsafe\nvalue",
+	}).RoundTrip(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	resp.Body.Close()
+	if received.Get(HeaderOSType) == "" && received.Get(HeaderProductModel) == "" {
+		t.Fatalf("no signals collected: %v", received)
+	}
+}

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@larksuite/cli",
-  "version": "1.0.76",
+  "version": "1.0.77",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@larksuite/cli",
-      "version": "1.0.76",
+      "version": "1.0.77",
       "cpu": [
         "x64",
         "arm64",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@larksuite/cli",
-  "version": "1.0.76",
+  "version": "1.0.77",
   "description": "The official CLI for Lark/Feishu open platform",
   "bin": {
     "lark-cli": "scripts/run.js"

shortcuts/slides/slides_screenshot.go

@@ -43,7 +43,7 @@ var SlidesScreenshot = common.Shortcut{
 	AuthTypes:         []string{"user", "bot"},
 	Flags: []common.Flag{
 		{Name: "presentation", Desc: "xml_presentation_id, slides URL, or wiki URL that resolves to slides; list mode only"},
-		{Name: "slide-id", Type: "string_array", Desc: "slide page identifier (repeat for multiple slides; max 10 pages per request)"},
+		{Name: "slide-id", Type: "string_slice", Desc: "slide page identifier (repeat or comma-separated for multiple slides; max 10 pages per request)"},
 		{Name: "slide-number", Type: "int_array", Desc: "slide page number (repeat for multiple slides; max 10 pages per request)"},
 		{Name: "content", Desc: "slide XML content to render directly instead of fetching existing slides", Input: []string{common.File, common.Stdin}},
 		{Name: "output-dir", Default: defaultSlidesScreenshotDir, Desc: "relative directory for saved screenshots"},
@@ -55,7 +55,7 @@ var SlidesScreenshot = common.Shortcut{
 			if strings.TrimSpace(runtime.Str("content")) == "" {
 				return slidesScreenshotFlagErrorf("--content cannot be empty")
 			}
-			if len(normalizeSlideIDs(runtime.StrArray("slide-id"))) > 0 || len(runtime.IntArray("slide-number")) > 0 {
+			if len(normalizeSlideIDs(runtime.StrSlice("slide-id"))) > 0 || len(runtime.IntArray("slide-number")) > 0 {
 				return slidesScreenshotFlagErrorf("--content cannot be used with --slide-id or --slide-number")
 			}
 			if runtime.Changed("presentation") {
@@ -71,7 +71,7 @@ var SlidesScreenshot = common.Shortcut{
 					return err
 				}
 			}
-			slideIDs := normalizeSlideIDs(runtime.StrArray("slide-id"))
+			slideIDs := normalizeSlideIDs(runtime.StrSlice("slide-id"))
 			slideNumbers, err := normalizeSlideNumbers(runtime.IntArray("slide-number"))
 			if err != nil {
 				return err
@@ -96,7 +96,7 @@ var SlidesScreenshot = common.Shortcut{
 		if err != nil {
 			return common.NewDryRunAPI().Set("error", err.Error())
 		}
-		slideIDs := normalizeSlideIDs(runtime.StrArray("slide-id"))
+		slideIDs := normalizeSlideIDs(runtime.StrSlice("slide-id"))
 		slideNumbers, err := normalizeSlideNumbers(runtime.IntArray("slide-number"))
 		if err != nil {
 			return common.NewDryRunAPI().Set("error", err.Error())
@@ -146,7 +146,7 @@ var SlidesScreenshot = common.Shortcut{
 			return err
 		}
 
-		slideIDs := normalizeSlideIDs(runtime.StrArray("slide-id"))
+		slideIDs := normalizeSlideIDs(runtime.StrSlice("slide-id"))
 		slideNumbers, err := normalizeSlideNumbers(runtime.IntArray("slide-number"))
 		if err != nil {
 			return err
@@ -198,7 +198,7 @@ func dryRunRenderScreenshot(runtime *common.RuntimeContext) *common.DryRunAPI {
 	if strings.TrimSpace(content) == "" {
 		return common.NewDryRunAPI().Set("error", "--content cannot be empty")
 	}
-	if len(normalizeSlideIDs(runtime.StrArray("slide-id"))) > 0 || len(runtime.IntArray("slide-number")) > 0 {
+	if len(normalizeSlideIDs(runtime.StrSlice("slide-id"))) > 0 || len(runtime.IntArray("slide-number")) > 0 {
 		return common.NewDryRunAPI().Set("error", "--content cannot be used with --slide-id or --slide-number")
 	}
 	if runtime.Changed("presentation") {
@@ -217,7 +217,7 @@ func executeRenderScreenshot(runtime *common.RuntimeContext) error {
 	if strings.TrimSpace(content) == "" {
 		return slidesScreenshotFlagErrorf("--content cannot be empty")
 	}
-	if len(normalizeSlideIDs(runtime.StrArray("slide-id"))) > 0 || len(runtime.IntArray("slide-number")) > 0 {
+	if len(normalizeSlideIDs(runtime.StrSlice("slide-id"))) > 0 || len(runtime.IntArray("slide-number")) > 0 {
 		return slidesScreenshotFlagErrorf("--content cannot be used with --slide-id or --slide-number")
 	}
 	if runtime.Changed("presentation") {

shortcuts/slides/slides_screenshot_test.go

@@ -185,6 +185,139 @@ func TestSlidesScreenshotListBySlideNumber(t *testing.T) {
 	}
 }
 
+func TestSlidesScreenshotListBySlideIDCSV(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	dir := t.TempDir()
+	withSlidesTestWorkingDir(t, dir)
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, slidesTestConfig(t, ""))
+	stub := &httpmock.Stub{
+		Method: "POST",
+		URL:    "/open-apis/slides_ai/v1/xml_presentations/pres_abc/slide_images",
+		Body: map[string]interface{}{
+			"code": 0,
+			"data": map[string]interface{}{
+				"slide_images": []map[string]interface{}{
+					{
+						"slide_id": "slide_1",
+						"format":   1,
+						"data":     base64.StdEncoding.EncodeToString([]byte("png-bytes-1")),
+					},
+					{
+						"slide_id": "slide_2",
+						"format":   1,
+						"data":     base64.StdEncoding.EncodeToString([]byte("png-bytes-2")),
+					},
+				},
+			},
+		},
+	}
+	reg.Register(stub)
+
+	err := runSlidesShortcut(t, f, stdout, SlidesScreenshot, []string{
+		"+screenshot",
+		"--presentation", "pres_abc",
+		"--slide-id", "slide_1,slide_2",
+		"--as", "user",
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	var body struct {
+		SlideIDs []string `json:"slide_ids"`
+	}
+	if err := json.Unmarshal(stub.CapturedBody, &body); err != nil {
+		t.Fatalf("decode request body: %v", err)
+	}
+	if len(body.SlideIDs) != 2 || body.SlideIDs[0] != "slide_1" || body.SlideIDs[1] != "slide_2" {
+		t.Fatalf("slide_ids = %#v, want [slide_1 slide_2]", body.SlideIDs)
+	}
+
+	path1 := filepath.Join(dir, defaultSlidesScreenshotDir, "pres_abc_slide_1.png")
+	if _, err := os.ReadFile(path1); err != nil {
+		t.Fatalf("read first CSV slide screenshot: %v", err)
+	}
+	path2 := filepath.Join(dir, defaultSlidesScreenshotDir, "pres_abc_slide_2.png")
+	if _, err := os.ReadFile(path2); err != nil {
+		t.Fatalf("read second CSV slide screenshot: %v", err)
+	}
+}
+
+func TestSlidesScreenshotListBySlideIDCSVDeduplicatesAndTrims(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	dir := t.TempDir()
+	withSlidesTestWorkingDir(t, dir)
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, slidesTestConfig(t, ""))
+	stub := &httpmock.Stub{
+		Method: "POST",
+		URL:    "/open-apis/slides_ai/v1/xml_presentations/pres_abc/slide_images",
+		Body: map[string]interface{}{
+			"code": 0,
+			"data": map[string]interface{}{
+				"slide_images": []map[string]interface{}{
+					{
+						"slide_id": "slide_1",
+						"format":   1,
+						"data":     base64.StdEncoding.EncodeToString([]byte("png-bytes-1")),
+					},
+					{
+						"slide_id": "slide_2",
+						"format":   1,
+						"data":     base64.StdEncoding.EncodeToString([]byte("png-bytes-2")),
+					},
+				},
+			},
+		},
+	}
+	reg.Register(stub)
+
+	// CSV with a duplicate and blank segments should normalize the same way
+	// normalizeSlideIDs already does for repeated --slide-id flags.
+	err := runSlidesShortcut(t, f, stdout, SlidesScreenshot, []string{
+		"+screenshot",
+		"--presentation", "pres_abc",
+		"--slide-id", "slide_1, slide_2,slide_1,",
+		"--as", "user",
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	var body struct {
+		SlideIDs []string `json:"slide_ids"`
+	}
+	if err := json.Unmarshal(stub.CapturedBody, &body); err != nil {
+		t.Fatalf("decode request body: %v", err)
+	}
+	if len(body.SlideIDs) != 2 || body.SlideIDs[0] != "slide_1" || body.SlideIDs[1] != "slide_2" {
+		t.Fatalf("slide_ids = %#v, want deduplicated [slide_1 slide_2]", body.SlideIDs)
+	}
+}
+
+func TestSlidesScreenshotListRejectsMoreThanTenSlideIDsCSV(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	f, stdout, _, _ := cmdutil.TestFactory(t, slidesTestConfig(t, ""))
+
+	err := runSlidesShortcut(t, f, stdout, SlidesScreenshot, []string{
+		"+screenshot",
+		"--presentation", "pres_abc",
+		"--slide-id", "s1,s2,s3,s4,s5,s6,s7,s8,s9,s10,s11",
+		"--as", "user",
+	})
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	problem, ok := errs.ProblemOf(err)
+	if !ok {
+		t.Fatalf("error = %v, want typed validation error", err)
+	}
+	if problem.Hint != "request at most 10 pages at a time" {
+		t.Fatalf("hint = %q, want max 10 pages guidance", problem.Hint)
+	}
+}
+
 func TestSlidesScreenshotAvoidsOverwritingExistingFile(t *testing.T) {
 	dir := t.TempDir()
 	withSlidesTestWorkingDir(t, dir)
@@ -387,6 +520,27 @@ func TestSlidesScreenshotRenderRejectsSlideSelectors(t *testing.T) {
 	}
 }
 
+func TestSlidesScreenshotRenderRejectsSlideNumberSelector(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	f, stdout, _, _ := cmdutil.TestFactory(t, slidesTestConfig(t, ""))
+
+	// Exercises the --slide-number-only side of the --content conflict check
+	// (TestSlidesScreenshotRenderRejectsSlideSelectors above only covers the
+	// --slide-id side of that same `||` condition).
+	err := runSlidesShortcut(t, f, stdout, SlidesScreenshot, []string{
+		"+screenshot",
+		"--content", `<slide xmlns="http://www.larkoffice.com/sml/2.0"><data></data></slide>`,
+		"--slide-number", "1",
+		"--as", "user",
+	})
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if !strings.Contains(err.Error(), "--content cannot be used with --slide-id or --slide-number") {
+		t.Fatalf("error = %v, want content/slide selector conflict", err)
+	}
+}
+
 func TestSlidesScreenshotRenderRejectsListOnlyFlags(t *testing.T) {
 	f, stdout, _, _ := cmdutil.TestFactory(t, slidesTestConfig(t, ""))
 

skills/lark-doc/references/lark-doc-xml.md

@@ -13,7 +13,7 @@ p, h1-h9, ul, ol, li, table, thead, tbody, tr, th, td, blockquote, pre, code, hr
 ## 容器标签
 |标签|说明|关键属性|
 |-|-|-|
-| `<callout>` | 高亮框，子块仅支持文本、标题、列表、待办、引用 | `emoji`(默认 bulb), `background-color`, `border-color`, `text-color` |
+| `<callout>` | 高亮框，子块仅支持文本块（如 `<p>`）、标题、列表、待办、引用；禁止裸文本及 `<table>`、`<img>`、`<pre>`、`<hr>`、`<grid>`、`<whiteboard>`、`<sheet>` 等其他块级标签或资源块 | `emoji`(默认 bulb), `background-color`, `border-color`, `text-color` |
 | `<grid>` + `<column>` | 分栏布局，各列 width-ratio 之和为 1 | `width-ratio` |
 | `<whiteboard>` | 嵌入画板 | `type`: `blank` \| `mermaid` \| `plantuml` \| `svg` |
 | `<pre>` | （代码块，内含 `code`）| `lang`, `caption` |

skills/lark-slides/references/lark-slides-screenshot.md

@@ -26,8 +26,8 @@ lark-cli slides +screenshot --as user \
 | 参数 | 必需 | 说明 |
 |------|------|------|
 | `--presentation` | list 模式必需 | `xml_presentation_id`、`/slides/` URL，或解析后为 slides 的 `/wiki/` URL。传 `--content` 时不能使用 |
-| `--slide-id` | list 模式至少提供 `--slide-id` / `--slide-number` 之一 | 页面 short ID；多页截图时重复传入；一次最多 10 页（`--slide-id` + `--slide-number` 合计小于等于 10） |
-| `--slide-number` | list 模式至少提供 `--slide-id` / `--slide-number` 之一 | 页面页号；多页截图时重复传入；一次最多 10 页（`--slide-id` + `--slide-number` 合计小于等于 10） |
+| `--slide-id` | list 模式至少提供 `--slide-id` / `--slide-number` 之一 | 页面 short ID；多页截图时重复传入，或用逗号分隔一次传多个（如 `--slide-id slide_1,slide_2`）；一次最多 10 页（`--slide-id` + `--slide-number` 合计小于等于 10） |
+| `--slide-number` | list 模式至少提供 `--slide-id` / `--slide-number` 之一 | 页面页号；多页截图时重复传入，或用逗号分隔一次传多个（如 `--slide-number 1,2,3`）；一次最多 10 页（`--slide-id` + `--slide-number` 合计小于等于 10） |
 | `--content` | render 模式必需 | 要直接渲染的 `<slide>` XML 片段；支持直接传值、`@file`、`-` stdin。传入后不能同时传 `--slide-id` / `--slide-number` |
 | `--output-dir` | 否 | 输出目录，默认 `.lark-slides/screenshots`；必须是当前目录内的相对路径 |
 | `--output-name` | 否 | render 模式的输出文件名 stem；未指定时优先用返回的 `slide_id`，否则用 `rendered-slide`。若目标文件已存在，会自动追加递增后缀避免覆盖 |
@@ -44,7 +44,7 @@ lark-cli slides +screenshot --as user \
 
 ### 多页截图
 
-一次不要超过 10 页；如需更多页面，分批调用。
+一次不要超过 10 页；如需更多页面，分批调用。可以重复传参，也可以用逗号分隔一次传多个：
 
 ```bash
 lark-cli slides +screenshot --as user \

tests/cli_e2e/slides/slides_screenshot_dryrun_test.go

@@ -0,0 +1,49 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package slides
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	clie2e "github.com/larksuite/cli/tests/cli_e2e"
+	"github.com/stretchr/testify/require"
+	"github.com/tidwall/gjson"
+)
+
+// TestSlidesScreenshotSlideIDCSVDryRunE2E pins the CSV multi-value parsing for
+// --slide-id through the built CLI: a single comma-separated flag value must
+// expand into the same slide_ids request body that repeating the flag would
+// produce.
+func TestSlidesScreenshotSlideIDCSVDryRunE2E(t *testing.T) {
+	setSlidesDryRunEnv(t)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	t.Cleanup(cancel)
+
+	result, err := clie2e.RunCmd(ctx, clie2e.Request{
+		Args: []string{
+			"slides", "+screenshot",
+			"--presentation", "presScreenshotDryRun",
+			"--slide-id", "slide_1,slide_2",
+			"--dry-run",
+		},
+		DefaultAs: "bot",
+	})
+	require.NoError(t, err)
+	result.AssertExitCode(t, 0)
+
+	require.Equal(t, "POST", gjson.Get(result.Stdout, "data.api.0.method").String(), result.Stdout)
+	require.Equal(t,
+		"/open-apis/slides_ai/v1/xml_presentations/presScreenshotDryRun/slide_images",
+		gjson.Get(result.Stdout, "data.api.0.url").String(),
+		result.Stdout,
+	)
+
+	slideIDs := gjson.Get(result.Stdout, "data.api.0.body.slide_ids").Array()
+	require.Len(t, slideIDs, 2, result.Stdout)
+	require.Equal(t, "slide_1", slideIDs[0].String(), result.Stdout)
+	require.Equal(t, "slide_2", slideIDs[1].String(), result.Stdout)
+}