mcp-svelte-docs

@spences10

About mcp-svelte-docs

🔍 MCP server that lets you search and access Svelte documentation with built-in caching

#search #documentation #mcp #svelte #developer-tools #llm #libsql #model-context-protocol

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-svelte-docs": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-svelte-docs"
      ]
    }
  }
}

Tools

Get authoritative Svelte 5 definitions extracted from TypeScript declarations. Returns precise syntax, parameters, and variants for runes ($state, $derived, $props, $effect), features (snippets, onclick), and patterns (component-events). Use "syntax" format for quick reference (~50 words), "quick" for definition + example (~200 words), or "full" for complete documentation (~500-1000 words). Replaces 13+ specialized tools with a single, consistent interface.

Overview

What is mcp-svelte-docs?

An MCP server providing authoritative Svelte 5 and SvelteKit definitions extracted from TypeScript declarations. It delivers precise syntax, parameters, and examples for all Svelte 5 concepts through a single unified tool.

How to use mcp-svelte-docs?

Install and configure via your MCP client (Claude Desktop, Cursor, Windsurf). The server exposes one tool, svelte_definition, which takes an identifier and optional format ("syntax", "quick", or "full"). Configuration examples are provided for WSL, Windows, macOS, and Linux using the command npx -y mcp-svelte-docs.

Key features of mcp-svelte-docs

Definitions extracted directly from official Svelte 5 TypeScript declarations.
Single svelte_definition tool covers 28+ identifiers.
Supports runes, snippets, event handling, migration guidance, and TypeScript interfaces.
Response formats: syntax (TypeScript signature), quick (definition + example), full (complete documentation).
Smart error recovery with fuzzy matching and related concept suggestions.
Includes migration help from Svelte 4 to Svelte 5.

Use cases of mcp-svelte-docs

Quickly look up Svelte 5 rune syntax and parameters while coding.
Get migration guidance for converting Svelte 4 patterns to Svelte 5.
Obtain concise TypeScript signatures for Svelte 5 features and event handlers.
Explore advanced patterns like remote functions and global state in SvelteKit.
Provide a consistent, authoritative reference for AI assistants working with Svelte 5.

FAQ from mcp-svelte-docs

What identifiers are available?

28+ definitions cover core runes ($state, $derived, $props, $effect variants), features (snippets, onclick, component-events), migration patterns, event handling (custom-events, event-modifiers), and TypeScript interfaces (Snippet, Snapshot).

How does the svelte_definition tool work?

Call svelte_definition(identifier, format?) where identifier is a supported name (e.g., "$state", "snippets"). Optional format parameter sets response verbosity: "syntax", "quick", or "full" (default).

What are the runtime requirements?

The server runs on Node.js via npx. Configuration examples are provided for WSL, Windows (without WSL), macOS, and Linux.

Does the server support Svelte 4?

It does not directly support Svelte 4 syntax, but includes a migration-patterns identifier that provides guidance and equivalents for converting Svelte 4 patterns to Svelte 5.

Where do the definitions come from?

Definitions are extracted directly from the official Svelte 5 TypeScript declarations, ensuring they reflect the actual API rather than outdated tutorials.

Frequently asked questions

What identifiers are available?

How does the svelte_definition tool work?

Call `svelte_definition(identifier, format?)` where identifier is a supported name (e.g., `"$state"`, `"snippets"`). Optional format parameter sets response verbosity: `"syntax"`, `"quick"`, or `"full"` (default).

What are the runtime requirements?

The server runs on Node.js via npx. Configuration examples are provided for WSL, Windows (without WSL), macOS, and Linux.

Does the server support Svelte 4?

It does not directly support Svelte 4 syntax, but includes a `migration-patterns` identifier that provides guidance and equivalents for converting Svelte 4 patterns to Svelte 5.

Where do the definitions come from?

Definitions are extracted directly from the official Svelte 5 TypeScript declarations, ensuring they reflect the actual API rather than outdated tutorials.

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