astro-mcp

MCP server to support Astro project development, inspired by antfu's nuxt-mcp.

[!IMPORTANT] This package is experimental and unstable. Proceed with caution when using it.

astro-mcp aims to help models understand your Astro project better, by providing them with information that cannot be easily accessed just by looking at the project files, such as:

• Runtime information about the Astro server
• Up-to-date Astro docs content
• Information about the Astro integrations you are using

Installation

In your Astro project directory, run the following command:

npx astro add astro-mcp

Manual installation

First, install the astro-mcp package:

npm install astro-mcp

Then, add the astro-mcp integration to your Astro config:

import { defineConfig } from "astro/config";

import mcp from "astro-mcp";

export default defineConfig({
  integrations: [mcp()],
});

Usage

After installing the integration, the MCP server will be available at http://localhost:4321/__mcp/sse. You can use this URL to connect to the MCP server:

• If you are using VSCode, create an empty .vscode/mcp.json file in the root of your project. astro-mcp will automatically update this file when the Astro server starts.
• If you are using Cursor, create an empty .cursor/mcp.json file in the root of your project. astro-mcp will automatically update this file when the Astro server starts.

Extending the MCP server

astro-mcp provides a hook called mcp:setup that other integrations can use to extend the MCP server. This is useful if you want to add custom tools to the MCP server.

export default function createExampleIntegration(): AstroIntegration {
  return {
    name: "example-integration",
    hooks: {
      "mcp:setup": async ({ mcp }) => {
        mcp.tool("add", { a: z.number(), b: z.number() }, async ({ a, b }) => ({
          content: [{ type: "text", text: String(a + b) }],
        }));
      },
    },
  };
}

Tools

• get-astro-config: Get the Astro config object containing comprehensive project settings including file paths (root, src, public, output directories), site URL, build options, server settings, enabled integrations, markdown processing configuration, image handling, Vite plugins, security settings, and experimental features
  • Parameters: None
• list-astro-routes: List detailed routing information from your Astro project, including all routes with their file entrypoints, URL patterns, dynamic parameters, pre-rendering status, and route types. Optionally filter by type to focus on specific route categories
  • Parameters:
    • type (string, optional): redirect, page, endpoint, or fallback
• get-astro-server-address: Get the current network address, IP protocol family, and port number of the running Astro development server
  • Parameters: None
• list-astro-integrations: List all Astro integrations available in the ecosystem
  • Parameters: None
• get-astro-integration: Get detailed metadata about a specific Astro integration, including its name, description, categories, repository links, npm information, related website links, official status, and download statistics
  • Parameters:
    • name (string): The name of the Astro integration
• search-astro-docs: Search the Astro documentation for specific topics, concepts, or features. Returns relevant documentation snippets that match your query
  • Parameters:
    • query (string): The query to search for

Tools from vite-plugin-mcp

• get-vite-config: Get the Vite config digest, including the root, resolve, plugins, and environment names
  • Parameters: None
• get-vite-module-info: Get graph information of a module, including importers, imported modules, and compiled result
  • Parameters:
    • filepath (string): The absolute filepath of the module