Basecamp MCP Server

Model Context Protocol (MCP) server for Basecamp integration. Enables LLMs to interact with Basecamp projects, messages, todos, comments, people, and kanban boards.

Getting Started

The Basecamp MCP server requires Node.js 18+ and works with various MCP clients including Claude Code CLI, Claude Desktop, Cursor, VS Code, and others.

Prerequisites

You need a Basecamp OAuth app. Register one at 37signals Launchpad with the redirect URI set to http://localhost:7652/callback.

Installation

Add the MCP server to your client with your OAuth credentials:

{
  "mcpServers": {
    "basecamp": {
      "command": "npx",
      "args": ["-y", "basecamp-mcp@latest"],
      "env": {
        "BASECAMP_CLIENT_ID": "your_client_id",
        "BASECAMP_CLIENT_SECRET": "your_client_secret"
      }
    }
  }
}

Claude Code CLI:

claude mcp add basecamp npx basecamp-mcp@latest \
  -e BASECAMP_CLIENT_ID=your_client_id \
  -e BASECAMP_CLIENT_SECRET=your_client_secret

Claude Desktop: Follow the MCP install guide using the JSON config above.

Cursor: Add configuration through Settings → Tools & Integrations → New MCP Server.

VS Code:

code --add-mcp '{"name":"basecamp","command":"npx","args":["-y", "basecamp-mcp@latest"]}'

Authentication

Once the MCP server is running, authenticate using the built-in login tool:

1. Call basecamp_login — a browser window will open for Basecamp authorization

2. Authorize the app in your browser

3. If you have multiple Basecamp accounts, call basecamp_login again with the desired account_id

4. Done! Credentials are saved to ~/.config/basecamp-mcp/credentials.json

Use basecamp_whoami to check who you're logged in as, and basecamp_logout to remove stored credentials.

Configuration

The server requires these environment variables:

• BASECAMP_CLIENT_ID — Your Basecamp OAuth client ID

• BASECAMP_CLIENT_SECRET — Your Basecamp OAuth client secret

Available Tools

Authentication

• basecamp_login - Authenticate with Basecamp via OAuth browser flow

• basecamp_logout - Remove stored credentials

• basecamp_whoami - Show the currently authenticated user

Projects

• basecamp_list_projects - List all accessible projects with optional filtering

• basecamp_get_project - Get detailed project information including dock configuration

Messages

• basecamp_list_messages - List messages in a message board with optional filtering

• basecamp_list_message_types - List available message types/categories for a project

• basecamp_get_message - Get single message details

• basecamp_create_message - Create new message with optional category and draft status

• basecamp_update_message - Update message with advanced content editing (supports full replacement, append, prepend, search/replace)

TODOs

• basecamp_get_todoset - Get todo set container with all todo lists

• basecamp_list_todos - List todos in a list with status filtering (active/archived)

• basecamp_create_todo - Create new todo with optional description

• basecamp_complete_todo - Mark todo as complete

• basecamp_uncomplete_todo - Mark todo as incomplete

Comments

• basecamp_list_comments - List comments on any resource (works universally on all recording types)

• basecamp_create_comment - Add comment to any resource

• basecamp_update_comment - Update comment with advanced content editing (supports full replacement, append, prepend, search/replace)

People

• basecamp_get_me - Get personal information for the authenticated user

• basecamp_list_people - List all people with optional filtering by name, email, or title

• basecamp_get_person - Get person details

Kanban

• basecamp_list_kanban_columns - List all columns in a kanban board

• basecamp_list_kanban_cards - List cards in a column with steps and assignees

• basecamp_get_kanban_card - Get complete details of a specific card

• basecamp_create_kanban_card - Create new card with title, content, and optional checklist steps

• basecamp_update_kanban_card - Update card with advanced content editing (supports full replacement, append, prepend, search/replace, plus title, due date, assignees, notifications, and complete step array management)

• basecamp_move_kanban_card - Move a card to a different column and/or position

Activity

• basecamp_list_recordings - Browse recent activity globally or across specific projects, with filtering by type, date range, person, and text search. All filters support multiple values for OR-matching (e.g., multiple project IDs, person IDs, types, or search terms)

• basecamp_list_campfire_messages - Browse chat messages from Campfires with filtering by campfire, person, text content, and date range. All filters support multiple values for OR-matching

Development

# Install dependencies
npm install

# Run type checking
npx tsc --noEmit

# Build
npm run build

# Clean build artifacts
npm run clean

License

MIT