@sveltejs/opencode

OpenCode plugin for Svelte that provides the Svelte MCP server, a specialized file editor subagent and instruction files.

Installation

Add @sveltejs/opencode to your OpenCode config (either global or local):

{
	"$schema": "https://opencode.ai/config.json",
	"plugin": ["@sveltejs/opencode"]
}

That's it! You now have the Svelte MCP server and the file editor subagent configured automatically.

Features

Svelte MCP Server

The plugin automatically configures the Svelte MCP server which provides:

list-sections - Discover available Svelte 5 and SvelteKit documentation sections
get-documentation - Retrieve full documentation content for specific sections
svelte-autofixer - Analyze Svelte code and get issues/suggestions
playground-link - Generate Svelte Playground links with provided code

Svelte File Editor Subagent

A specialized subagent (svelte-file-editor) that is automatically used when creating, editing, or reviewing .svelte, .svelte.ts, or .svelte.js files. It fetches relevant documentation and validates code using the Svelte MCP server tools.

Agent Instructions

The plugin injects instructions that teach the agent how to effectively use the Svelte MCP tools.

Configuration

The default configuration:

{
	"$schema": "https://raw.githubusercontent.com/sveltejs/mcp/refs/heads/main/packages/opencode/schema.json",
	"mcp": {
		"type": "remote",
		"enabled": true
	},
	"subagent": {
		"enabled": true
	},
	"instructions": {
		"enabled": true
	}
}

Configuration Options

Option	Type	Default	Description
`mcp.type`	`"remote"` \| `"local"`	`"remote"`	Use the remote server at `mcp.svelte.dev` or run locally via `npx @sveltejs/mcp`
`mcp.enabled`	`boolean`	`true`	Enable/disable the MCP server
`subagent.enabled`	`boolean`	`true`	Enable/disable the Svelte file editor subagent
`instructions.enabled`	`boolean`	`true`	Enable/disable agent instructions injection

Config File Location

Place your configuration at one of these locations:

~/.config/opencode/svelte.json (global)
$OPENCODE_CONFIG_DIR/svelte.json (if OPENCODE_CONFIG_DIR is set, takes priority)

License

MIT

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