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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

Tool

Description

basecamp_auth

Initiate OAuth authentication

basecamp_list_projects

List all projects

basecamp_get_project

Get project details

basecamp_create_project

Create a new project

basecamp_update_project

Update a project

basecamp_trash_project

Move project to trash

basecamp_list_todolists

List to-do lists in a project

basecamp_get_todolist

Get to-do list details

basecamp_create_todolist

Create a new to-do list

basecamp_list_todos

List to-dos in a list

basecamp_get_todo

Get to-do details

basecamp_create_todo

Create a new to-do

basecamp_update_todo

Update a to-do

basecamp_complete_todo

Mark to-do as complete

basecamp_uncomplete_todo

Mark to-do as incomplete

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

Maintenance

ActivityInactive
ResponsivenessNo issues

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