A Model Context Protocol (MCP) server for complete Basecamp automation. This server allows AI assistants like Claude to interact with Basecamp projects, cards, todos, comments, and more.

Author: Varun Dubey (vapvarun) | Company: Wbcom Designs

If you cloned this from GitHub, you need to create your config.json file:

# 1. Copy the example config
cp config.example.json config.json

# 2. Edit config.json and add your Basecamp credentials
# (See "Getting Basecamp Credentials" section below)

Note: config.json is gitignored and will never be committed to keep your credentials safe.

✅ Complete Basecamp API Coverage

• Read and comment on cards/todos
• Create, update, move, and trash cards
• Manage projects, columns, and steps
• Handle todos and checklists
• List and manage people
• Track events and activity

✅ 40+ MCP Tools Available

• Complete Basecamp API integration via MCP tools
• Full CRUD operations for all Basecamp resources
• Search and utility functions

✅ Smart Features

• Auto-detect account ID
• Extract images from comments
• Parse Basecamp URLs
• Fuzzy project search

cd basecamp-mcp-server
npm install

npm run build

You have two options:

export BASECAMP_ACCESS_TOKEN="your_access_token_here"
export BASECAMP_ACCOUNT_ID="your_account_id"  # Optional, will auto-detect

Create a config.json file in the project root:

{
  "accessToken": "your_access_token_here",
  "accountId": "your_account_id"
}

Note: Use config.example.json as a template. Never commit config.json to version control.

1. Go to Basecamp Integrations
2. Click "Register a new app"
3. Fill in the details:
   • Name: Your app name (e.g., "My MCP Server")
   • Company: Your company/name
   • Website: Your website URL
   • Redirect URI: http://localhost:3000/callback (or your callback URL)

From your app page, note down:

• Client ID
• Client Secret

Implement OAuth flow to get your access token:

import { BasecampAPI } from './src/basecamp-api.js';

// 1. Get authorization URL
const authUrl = BasecampAPI.getOAuthUrl(clientId, redirectUri);
// Direct user to this URL

// 2. Exchange code for token (after OAuth redirect)
const tokens = await BasecampAPI.exchangeAuthCode(
  clientId,
  clientSecret,
  redirectUri,
  code
);

console.log(tokens.access_token); // Use this in your config

Edit your Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

Add the server:

{
  "mcpServers": {
    "basecamp": {
      "command": "node",
      "args": ["/absolute/path/to/basecamp-mcp-server/build/index.js"],
      "env": {
        "BASECAMP_ACCESS_TOKEN": "your_access_token_here",
        "BASECAMP_ACCOUNT_ID": "your_account_id"
      }
    }
  }
}

The Basecamp tools will now be available in Claude.

• basecamp_read - Read card/todo with comments and images
• basecamp_comment - Post a comment to any card/todo

• basecamp_list_projects - List all projects
• basecamp_get_project - Get project details
• basecamp_create_project - Create a new project
• basecamp_update_project - Update project
• basecamp_trash_project - Delete project

• basecamp_list_columns - List columns in a card table
• basecamp_list_cards - List cards in a column
• basecamp_get_card - Get card details
• basecamp_create_card - Create a new card
• basecamp_update_card - Update card details
• basecamp_move_card - Move card to different column
• basecamp_trash_card - Delete card

• basecamp_list_steps - List steps on a card
• basecamp_add_step - Add a new step
• basecamp_complete_step - Mark step as done
• basecamp_uncomplete_step - Mark step as not done

• basecamp_get_todo - Get todo details
• basecamp_create_todo - Create a new todo
• basecamp_complete_todo - Complete todo
• basecamp_uncomplete_todo - Uncomplete todo

• basecamp_list_people - List all people
• basecamp_get_person - Get person details

• basecamp_get_events - Get recent activity

• basecamp_find_project - Search projects by name
• basecamp_parse_url - Parse Basecamp URL to extract IDs

// In Claude Desktop, you can simply ask:
// "Read this Basecamp card: https://3.basecamp.com/5798509/buckets/37594834/card_tables/cards/9010883489"

// The tool will be called automatically:
{
  "tool": "basecamp_read",
  "arguments": {
    "url": "https://3.basecamp.com/5798509/buckets/37594834/card_tables/cards/9010883489",
    "include_comments": true,
    "include_images": true
  }
}

// "Create a card in project 37594834, column 7389123 titled 'New Feature' with description 'Implement OAuth'"

{
  "tool": "basecamp_create_card",
  "arguments": {
    "project_id": "37594834",
    "column_id": "7389123",
    "title": "New Feature",
    "content": "Implement OAuth authentication",
    "due_on": "2024-12-31"
  }
}

// "Move card 9010883489 to the Done column (column 7389456)"

{
  "tool": "basecamp_move_card",
  "arguments": {
    "project_id": "37594834",
    "card_id": "9010883489",
    "to_column": "7389456"
  }
}

// "Post a comment to this card saying 'Work completed!'"

{
  "tool": "basecamp_comment",
  "arguments": {
    "url": "https://3.basecamp.com/5798509/buckets/37594834/card_tables/cards/9010883489",
    "comment": "Work completed! ✅"
  }
}

npm run dev  # Watch mode - rebuilds on changes

# Build first
npm run build

# Run directly
node build/index.js

# Or with explicit config
BASECAMP_ACCESS_TOKEN="your_token" node build/index.js

npx @modelcontextprotocol/inspector node build/index.js

basecamp-mcp-server/
├── src/
│   ├── index.ts           # Entry point
│   ├── server.ts          # Main MCP server implementation
│   ├── basecamp-api.ts    # Basecamp API client
│   ├── tools.ts           # MCP tool definitions
│   └── config.ts          # Configuration loader
├── build/                 # Compiled JavaScript (generated)
├── package.json
├── tsconfig.json
├── config.example.json    # Example config
└── README.md

1. BasecampAPI (basecamp-api.ts)

   • Complete Basecamp API v3 client
   • Handles OAuth and all API endpoints
   • Full TypeScript implementation

2. BasecampMCPServer (server.ts)

   • Implements MCP protocol
   • Routes tool calls to API methods
   • Handles responses and errors

3. Tools (tools.ts)

   • Defines all available MCP tools
   • Includes input schemas and descriptions

4. Config (config.ts)

   • Loads credentials from env or file
   • Handles configuration management

Make sure you've set either:

• Environment variables (BASECAMP_ACCESS_TOKEN)
• Or created a config.json file

Your access token has expired. Get a new one via OAuth or use a refresh token.

Make sure the URL format is correct:

• Cards: https://3.basecamp.com/{account}/buckets/{project}/card_tables/cards/{card_id}
• Todos: https://3.basecamp.com/{account}/buckets/{project}/todos/{todo_id}

1. Check Claude Desktop config file path is correct
2. Ensure the command path points to build/index.js
3. Restart Claude Desktop completely
4. Check Claude Desktop logs for errors

Full Basecamp API documentation: https://github.com/basecamp/bc3-api

Contributions are welcome! To contribute:

1. Fork the repository
2. Make changes in the appropriate files
3. Build: npm run build
4. Test with MCP Inspector
5. Submit a pull request

For detailed guidelines, see CONTRIBUTING.md

GPL v2 or later

Created by: Varun Dubey (vapvarun) Company: Wbcom Designs Email: varun@wbcomdesigns.com

• Basecamp API: Basecamp 3 API by 37signals
• MCP Protocol: Model Context Protocol by Anthropic

For issues related to:

• MCP Server: Open an issue on GitHub
• Basecamp API: Check Basecamp API documentation
• Claude Desktop: Check Anthropic MCP documentation

For professional support, custom development, or enterprise solutions:

• Website: https://wbcomdesigns.com
• Email: varun@wbcomdesigns.com

• Model Context Protocol (MCP)
• Basecamp API
• Anthropic Claude

Made with ❤️ by Varun Dubey at Wbcom Designs