Farcaster MCP server

The Farcaster MCP server provides tools to interact with the Farcaster network, enabling AI models to fetch casts, search channels, and analyze content from the Farcaster social media platform.

Installation

To get started with the Farcaster MCP server, follow these installation steps:

# Clone the repository
git clone https://github.com/manimohans/farcaster-mcp.git
cd farcaster-mcp

# Install dependencies
npm install

# Build the project
npm run build

Usage

Running the Server

Start the server with the following command:

npm start

Using with MCP Inspector

For testing purposes, you can use the MCP Inspector tool:

npx @modelcontextprotocol/inspector node ./build/index.js

Integration with Claude for Desktop

1. Install Claude for Desktop

2. Open your Claude for Desktop App configuration file:

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

3. Add the following configuration to the file:

{
  "mcpServers": {
    "farcaster": {
      "command": "node",
      "args": ["/absolute/path/to/farcaster-mcp/build/index.js"]
    }
  }
}

4. Restart Claude for Desktop to apply the changes

Deploying with Smithery

For easy deployment, you can use Smithery:

# Install Smithery CLI
npm install -g @smithery/cli

# Deploy to Smithery (specify your preferred client)
npx @smithery/cli install @manimohans/farcaster-mcp --client claude

Available client options include: claude, cline, windsurf, roo-cline, witsy, enconvo

Available Tools

get-user-casts

This tool retrieves casts from a specific Farcaster user by their FID (Farcaster ID).

Parameters:

• fid: Farcaster user ID (number)
• limit (optional): Maximum number of casts to return (default: 10)

Example query: "Show me the latest casts from FID 6846."

get-username-casts

This tool retrieves casts from a specific Farcaster user by their username.

Parameters:

• username: Farcaster username (string)
• limit (optional): Maximum number of casts to return (default: 10)

Example query: "Show me the latest casts from username 'mani'."

get-channel-casts

This tool retrieves casts from a specific Farcaster channel.

Parameters:

• channel: Channel name or URL (string)
• limit (optional): Maximum number of casts to return (default: 10)

Example query: "Show me the latest casts from the 'aichannel' channel."

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 "farcaster" '{"command":"node","args":["/absolute/path/to/farcaster-mcp/build/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": {
        "farcaster": {
            "command": "node",
            "args": [
                "/absolute/path/to/farcaster-mcp/build/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": {
        "farcaster": {
            "command": "node",
            "args": [
                "/absolute/path/to/farcaster-mcp/build/index.js"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect