Farcaster MCP Server

An MCP server that provides tools to interact with the Farcaster network (farcaster.xyz), allowing AI models to fetch casts, search channels, and analyze content.

Features

• Get User Casts: Retrieve casts from a specific Farcaster user by FID

• Get Username Casts: Retrieve casts from a specific Farcaster user by username

• Get Channel Casts: Retrieve casts from a specific Farcaster channel

• Get User Profile: Get detailed profile information (bio, display name, pfp, etc.)

• Get Cast Reactions: Get likes and recasts for a specific cast

• List Channels: Browse and search Farcaster channels

• Get User Following: See who a user follows

• Get User Followers: See who follows a user

Related MCP server: Lens Protocol MCP Server

Installation

# 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

npm start

Using with MCP Inspector

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

Using with Claude for Desktop

1. Install Claude for Desktop

2. Open your Claude for Desktop App configuration at:

   • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

   • Windows: %APPDATA%\Claude\claude_desktop_config.json

3. Add the following configuration:

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

4. Restart Claude for Desktop

Using with Smithery

This project includes Smithery configuration files for easy deployment:

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

# Deploy to Smithery (specify the client, e.g., claude, cline, windsurf, etc.)
npx @smithery/cli install @manimohans/farcaster-mcp --client claude

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

Available Tools

get-user-casts

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

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

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."

get-user-profile

Gets detailed profile information for a Farcaster user.

Parameters:

• fid (optional): Farcaster user ID (number)

• username (optional): Farcaster username (string)

Example query: "Get the profile for username 'dwr.eth'."

get-cast-reactions

Gets likes and recasts for a specific cast.

Parameters:

• fid: FID of the cast author (number)

• hash: Hash of the cast (string)

• type (optional): Type of reactions - "likes", "recasts", or "all" (default: "all")

Example query: "How many likes does cast 0x1cb62ca3... by FID 6846 have?"

list-channels

Lists Farcaster channels with optional search filtering.

Parameters:

• limit (optional): Maximum number of channels to return (default: 20)

• search (optional): Search term to filter channels by name or ID

Example query: "List the top 10 channels about AI."

get-user-following

Gets the list of users that a Farcaster user follows.

Parameters:

• fid: Farcaster user ID (number)

• limit (optional): Maximum number of results (default: 25)

Example query: "Who does FID 3 follow?"

get-user-followers

Gets the list of users who follow a Farcaster user.

Parameters:

• fid: Farcaster user ID (number)

• limit (optional): Maximum number of results (default: 25)

Example query: "Who follows FID 3?"

API Details

This implementation uses the Farcaster Hubble API to fetch data.

Development

# Run in development mode
npm run dev

License

MIT