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Ref Tools Mcp

Ref Tools Mcp

Created by ref-tools•20 days ago
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Developer Tools
MCPAPI-documentationdevelopers

Ref MCP

A ModelContextProtocol server that gives your AI coding tool or agent access to documentation for APIs, services, libraries etc. It’s your one-stop-shop to keep your agent up-to-date on documentation in a fast and token-efficient way.

For more see info ref.tools

Setup

There are two options for setting up Ref as an MCP server, either via the streamable-http server (experimental) or local stdio server.

This repo contains the legacy stdio server.

stdio

"Ref": {
  "command": "npx",
  "args": ["ref-tools-mcp"],
  "env": {
    "REF_API_KEY": <sign up to get an api key>
  }
}

Streamable HTTP (experimental)

"Ref": {
    "command": "npx",
    "args": [
      "-y",
      "[email protected]",
      "https://api.ref.tools/mcp"
      "--header",
      "x-ref-api-key:<sign up to get an api key>"
    ]
  }
}

As of April 2025, MCP supports streamable HTTP servers. Ref implements this but not all clients support it yet so the most reliable approach is to use mcp-remote as a local proxy. If you know your client supports streamable HTTP servers, feel free to use https://api.ref.tools/mcp directly.

Note for former alpha users: REF_ALPHA config is still supported. You’ll be notified if you need to update.

Tools

Ref MCP server provides all the documentation related tools for your agent needs.

ref_search_documentation

A powerful search tool to check technical documentation. Use this tool whenever you need information about any technical platform, framework, API, service, database, or library. It searches through relevant documentation and finds exactly what you need, down to the specific section of the page.

ref_read_url

A tool to read the full content of a web page. This allows your agent to follow links in documentation and web searches.

ref_search_web (optional)

A fallback web search tool to cover cases when ref_search_documentation doesn’t find what you need. It will find links to relevant pages on the web and the ref_read_url tool can be used to read the relevant ones.

We include this tool so that Ref can cover all your search needs in one MCP server but if you prefer another search provider you can disable ref_search_web by setting the DISABLE_SEARCH_WEB environment variable to true or by setting the disable_search_web=false url param in the streamable-http server.

Development

npm install
npm run dev

Running with Inspector

For development and debugging purposes, you can use the MCP Inspector tool. The Inspector provides a visual interface for testing and monitoring MCP server interactions.

Visit the Inspector documentation for detailed setup instructions.

To test locally with Inspector:

npm run inspect

Or run both the watcher and inspector:

npm run dev

Local Development

  1. Clone the repository
  2. Install dependencies:
npm install
  1. Build the project:
npm run build
  1. For development with auto-rebuilding:
npm run watch

License

MIT

Prerequisites

  • •Familiarity with the server domain
  • •Basic understanding of related technologies
  • •Knowledge of Developer Tools

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Details

Created

June 11, 2025

Last Updated

June 11, 2025

Category

Developer Tools

Author

ref-tools

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