Basecamp MCP Server

An MCP (Model Context Protocol) server that enables Claude to interact with the Basecamp API. Built with Bun and TypeScript.

Features

• OAuth 2.0 authentication with automatic token refresh

• Full CRUD operations for Projects and To-dos

• Rate limiting (50 requests per 10 seconds)

• Automatic pagination handling

Related MCP server: Basecamp MCP Server

Available Tools

Setup

1. Register a Basecamp OAuth Application

1. Go to https://launchpad.37signals.com/integrations

2. Create a new integration

3. Set the redirect URI to http://localhost:8788/callback

4. Note your Client ID and Client Secret

2. Install Dependencies

bun install

3. Configure Claude Code

Add the server to your Claude Code MCP configuration:

{
  "mcpServers": {
    "basecamp": {
      "command": "bun",
      "args": ["run", "/path/to/basecamp-mcp/src/index.ts"],
      "env": {
        "BASECAMP_CLIENT_ID": "your-client-id",
        "BASECAMP_CLIENT_SECRET": "your-client-secret"
      }
    }
  }
}

4. Authenticate

Once configured, ask Claude to authenticate with Basecamp:

Authenticate with Basecamp

This will open a browser window for OAuth authorization. After authorizing, tokens are stored locally in ~/.basecamp-mcp/tokens.json.

Development

# Run type checking
bun run typecheck

# Run the server directly
bun run start

License

MIT