EigenLayer Documentation MCP server

This MCP server provides EigenLayer documentation to Claude or other AI assistants through the Model Context Protocol. It can be run locally as a standalone server or deployed as a serverless function on Vercel.

Installation

Prerequisites

• Node.js installed on your system
• pnpm package manager

Local Setup

1. Clone the repository and navigate to the project directory

2. Install dependencies:

pnpm install

3. Build the project:

pnpm build

4. Start the development server:

pnpm dev

The server will be available at http://localhost:3000.

Using the MCP Server

Testing with Claude

You can add the MCP server to Claude using Claude Code:

1. Install Claude Code if you haven't already:

# Install Claude Code
# Follow installation instructions at https://docs.anthropic.com/en/docs/agents-and-tools/claude-code/overview

2. Add the MCP server to Claude:

# For the public endpoint
claude mcp add --transport sse eigenlayer-mcp-server https://eigenlayer-mcp-server-sand.vercel.app/sse

# For local testing
claude mcp add
# Then follow the on-screen instructions

3. Enter Claude Code by running:

claude

4. Confirm the MCP server is added

5. Test with queries about EigenLayer, for example:

   • "Can you explain how EigenLayer's restaking mechanism works?"

Testing with MCP Inspector

You can use the MCP Inspector to test the server:

npx @modelcontextprotocol/inspector node public/index.js

Using the Sample Client

The repository includes a sample client for testing:

node scripts/test-client.mjs http://localhost:3000

Troubleshooting

If you encounter issues with the local server:

1. Try cleaning up and reinstalling:

rm -rf .next node_modules .vercel
pnpm store prune
pnpm install
pnpm build
pnpm dev

2. For issues with the MCP client connection, ensure your server is running and the URL is correct when adding it to Claude or using the test client.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "eigenlayer-mcp-server" '{"command":"npx","args":["@modelcontextprotocol/inspector","node","public/index.js"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "eigenlayer-mcp-server": {
            "command": "npx",
            "args": [
                "@modelcontextprotocol/inspector",
                "node",
                "public/index.js"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "eigenlayer-mcp-server": {
            "command": "npx",
            "args": [
                "@modelcontextprotocol/inspector",
                "node",
                "public/index.js"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect