pump-fun-chat-mcp

A Model Context Protocol (MCP) server for connecting to and reading messages from pump.fun chat rooms. This package allows AI assistants like Claude to interact with pump.fun token chat rooms through a standardized interface.

This package uses pump-chat-client for WebSocket communication with pump.fun.

Features

• 🔌 Connect to a specific pump.fun token chat room
• 📨 Read chat messages with configurable history limits
• 💬 Send messages to the chat (if authenticated)
• 🔄 Automatic reconnection with exponential backoff
• 📊 Real-time message streaming
• 🛠️ Easy integration with Claude Code and other MCP-compatible clients

Installation

Global Installation (Recommended)

npm install -g pump-fun-chat-mcp

Local Installation

npm install pump-fun-chat-mcp

Usage

The MCP server requires a token address as a command-line argument:

pump-fun-chat-mcp <token-address>

Example:

pump-fun-chat-mcp y31hFyYbrVW4R53Zfka8WJfQpwpMLfCcAjVKAonpump

Adding to Claude Code

Add the following to your Claude Code MCP settings file (usually ~/.config/claude/mcp.json or %APPDATA%\claude\mcp.json on Windows):

{
  "mcpServers": {
    "pump-fun-chat": {
      "command": "npx",
      "args": ["pump-fun-chat-mcp", "YOUR_TOKEN_ADDRESS_HERE"]
    }
  }
}

If you installed globally:

{
  "mcpServers": {
    "pump-fun-chat": {
      "command": "pump-fun-chat-mcp",
      "args": ["YOUR_TOKEN_ADDRESS_HERE"]
    }
  }
}

Multiple Token Configuration

To monitor multiple tokens, add separate server entries:

{
  "mcpServers": {
    "pump-chat-token1": {
      "command": "pump-fun-chat-mcp",
      "args": ["TOKEN_ADDRESS_1"]
    },
    "pump-chat-token2": {
      "command": "pump-fun-chat-mcp",
      "args": ["TOKEN_ADDRESS_2"]
    }
  }
}

Available MCP Tools

PumpFunChat_ReadMessages

Read messages from the connected pump.fun chat room.

Parameters:

• limit (optional): Maximum number of messages to retrieve

PumpFunChat_GetLatestMessage

Get the most recent message from the chat room.

No parameters required.

PumpFunChat_SendMessage

Send a message to the chat room.

Parameters:

• message (required): The message text to send

PumpFunChat_GetStatus

Get the connection status and token information.

No parameters required.

Usage Examples

Once configured in Claude Code, you can use commands like:

1. "Read the last 20 messages from the pump.fun chat"
2. "What's the latest message in the chat?"
3. "Send a message saying 'Hello everyone!'"
4. "Check the connection status"

Development

Running from Source

# Clone the repository
git clone https://github.com/codingbutter/pump-fun-chat-mcp.git
cd pump-fun-chat-mcp

# Install dependencies
npm install

# Build the project
npm run build

# Run the MCP server with a token
npm run mcp -- YOUR_TOKEN_ADDRESS

Running the Example Client

npm run dev

Technical Details

• Uses socket.io protocol for WebSocket communication
• Implements proper message type handling (0, 40, 42, 43, 2/3 for ping/pong)
• Maintains message history with configurable limits
• Event-driven architecture for real-time updates
• Each server instance is dedicated to a single token/room

Command Line Arguments

• <token-address> (required): The pump.fun token address to connect to

Environment Variables

None required. All configuration is done through command-line arguments.

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Support

For issues and feature requests, please visit the GitHub repository.