v1.0.2

Basecamp

byungkyu byungkyu ← All skills

Basecamp API integration with managed OAuth. Manage projects, to-dos, messages, schedules, documents, and team collaboration. Use this skill when users want to create and manage projects, to-do lists, schedule events, or collaborate with teams in Basecamp. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway). Requires network access and valid Maton API key.

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1.6k
Stars
2
Versions
3
Updated
2026-02-24

Install

npx clawhub@latest install basecamp

Documentation

Basecamp

Access the Basecamp 4 API with managed OAuth authentication. Manage projects, to-dos, messages, schedules, documents, and team collaboration.

Quick Start

List all projects


python <<'EOF'


import urllib.request, os, json


req = urllib.request.Request('https://gateway.maton.ai/basecamp/projects.json')


req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')


print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))


EOF

Base URL

https://gateway.maton.ai/basecamp/{resource}.json

The gateway proxies requests to 3.basecampapi.com/{account_id}/ and automatically injects your OAuth token and account ID.

Important: All Basecamp API URLs must end with .json.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY
Environment Variable: Set your API key as MATON_API_KEY: 
export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at [maton.ai](https://maton.ai)

2. Go to [maton.ai/settings](https://maton.ai/settings)

3. Copy your API key

Connection Management

Manage your Basecamp OAuth connections at https://ctrl.maton.ai.

List Connections

python <<'EOF'

import urllib.request, os, json


req = urllib.request.Request('https://ctrl.maton.ai/connections?app=basecamp&status=ACTIVE')


req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')


print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))


EOF

Create Connection

python <<'EOF'

import urllib.request, os, json


data = json.dumps({'app': 'basecamp'}).encode()


req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')


req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')


req.add_header('Content-Type', 'application/json')


print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))


EOF

Get Connection

python <<'EOF'

import urllib.request, os, json


req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')


req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')


print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))


EOF
Response: 
{

  "connection": {


    "connection_id": "71e313c8-9100-48c6-8ea1-6323f6fafd04",


    "status": "ACTIVE",


    "creation_time": "2026-02-08T03:12:39.815086Z",


    "last_updated_time": "2026-02-08T03:12:59.259878Z",


    "url": "https://connect.maton.ai/?session_token=...",


    "app": "basecamp",


    "metadata": {}


  }


}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'

import urllib.request, os, json


req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')


req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')


print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))


EOF

Specifying Connection

If you have multiple Basecamp connections, specify which one to use with the Maton-Connection header:

python <<'EOF'

import urllib.request, os, json


req = urllib.request.Request('https://gateway.maton.ai/basecamp/projects.json')


req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')


req.add_header('Maton-Connection', '71e313c8-9100-48c6-8ea1-6323f6fafd04')


print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))


EOF

If omitted, the gateway uses the default (oldest) active connection.

API Reference

User Info

#### Get Current User

GET /basecamp/my/profile.json
Response: 
{

  "id": 51197030,


  "name": "Chris Kim",


  "email_address": "chris@example.com",


  "admin": true,


  "owner": true,


  "time_zone": "America/Los_Angeles",


  "avatar_url": "https://..."


}

People Operations

#### List People

GET /basecamp/people.json
Response: 
[

  {


    "id": 51197030,


    "name": "Chris Kim",


    "email_address": "chris@example.com",


    "admin": true,


    "owner": true,


    "employee": true,


    "time_zone": "America/Los_Angeles"


  }


]

#### Get Person

GET /basecamp/people/{person_id}.json

#### List Project Members

GET /basecamp/projects/{project_id}/people.json

Project Operations

#### List Projects

GET /basecamp/projects.json
Response: 
[

  {


    "id": 46005636,


    "status": "active",


    "name": "Getting Started",


    "description": "Quickly get up to speed with everything Basecamp",


    "created_at": "2026-02-05T22:59:26.087Z",


    "url": "https://3.basecampapi.com/6153810/projects/46005636.json",


    "dock": [...]


  }


]

#### Get Project

GET /basecamp/projects/{project_id}.json

The project response includes a dock array with available tools (message_board, todoset, vault, chat, schedule, etc.). Each dock item has:

  • -id: The tool's ID
  • -name: Tool type (e.g., "todoset", "message_board")
  • -enabled: Whether the tool is active
  • -url: Direct URL to access the tool

#### Create Project

POST /basecamp/projects.json

Content-Type: application/json



{


  "name": "New Project",


  "description": "Project description"


}

#### Update Project

PUT /basecamp/projects/{project_id}.json

Content-Type: application/json



{


  "name": "Updated Project Name",


  "description": "Updated description"


}

#### Delete (Trash) Project

DELETE /basecamp/projects/{project_id}.json

To-Do Operations

#### Get Todoset

First, get the todoset ID from the project's dock:

GET /basecamp/buckets/{project_id}/todosets/{todoset_id}.json

#### List Todolists

GET /basecamp/buckets/{project_id}/todosets/{todoset_id}/todolists.json
Response: 
[

  {


    "id": 9550474442,


    "title": "Basecamp essentials",


    "description": "",


    "completed": false,


    "completed_ratio": "0/5",


    "url": "https://..."


  }


]

#### Create Todolist

POST /basecamp/buckets/{project_id}/todosets/{todoset_id}/todolists.json

Content-Type: application/json



{


  "name": "New Todo List",


  "description": "List description"


}

#### Get Todolist

GET /basecamp/buckets/{project_id}/todolists/{todolist_id}.json

#### List Todos

GET /basecamp/buckets/{project_id}/todolists/{todolist_id}/todos.json
Response: 
[

  {


    "id": 9550474446,


    "content": "Start here",


    "description": "",


    "completed": false,


    "due_on": null,


    "assignees": []


  }


]

#### Create Todo

POST /basecamp/buckets/{project_id}/todolists/{todolist_id}/todos.json

Content-Type: application/json



{


  "content": "New todo item",


  "description": "Todo description",


  "due_on": "2026-02-15",


  "assignee_ids": [51197030]


}
Response: 
{

  "id": 9555973289,


  "content": "New todo item",


  "completed": false


}

#### Update Todo

PUT /basecamp/buckets/{project_id}/todos/{todo_id}.json

Content-Type: application/json



{


  "content": "Updated todo",


  "description": "Updated description"


}

#### Complete Todo

POST /basecamp/buckets/{project_id}/todos/{todo_id}/completion.json

Returns 204 on success.

#### Uncomplete Todo

DELETE /basecamp/buckets/{project_id}/todos/{todo_id}/completion.json

Message Board Operations

#### Get Message Board

GET /basecamp/buckets/{project_id}/message_boards/{message_board_id}.json

#### List Messages

GET /basecamp/buckets/{project_id}/message_boards/{message_board_id}/messages.json

#### Create Message

POST /basecamp/buckets/{project_id}/message_boards/{message_board_id}/messages.json

Content-Type: application/json



{


  "subject": "Message Subject",


  "content": "<p>Message body with HTML</p>",


  "category_id": 123


}

#### Get Message

GET /basecamp/buckets/{project_id}/messages/{message_id}.json

#### Update Message

PUT /basecamp/buckets/{project_id}/messages/{message_id}.json

Content-Type: application/json



{


  "subject": "Updated Subject",


  "content": "<p>Updated content</p>"


}

Schedule Operations

#### Get Schedule

GET /basecamp/buckets/{project_id}/schedules/{schedule_id}.json

#### List Schedule Entries

GET /basecamp/buckets/{project_id}/schedules/{schedule_id}/entries.json

#### Create Schedule Entry

POST /basecamp/buckets/{project_id}/schedules/{schedule_id}/entries.json

Content-Type: application/json



{


  "summary": "Team Meeting",


  "description": "Weekly sync",


  "starts_at": "2026-02-15T14:00:00Z",


  "ends_at": "2026-02-15T15:00:00Z",


  "all_day": false,


  "participant_ids": [51197030]


}

#### Update Schedule Entry

PUT /basecamp/buckets/{project_id}/schedule_entries/{entry_id}.json

Content-Type: application/json



{


  "summary": "Updated Meeting",


  "starts_at": "2026-02-15T15:00:00Z",


  "ends_at": "2026-02-15T16:00:00Z"


}

Vault (Documents & Files) Operations

#### Get Vault

GET /basecamp/buckets/{project_id}/vaults/{vault_id}.json

#### List Documents in Vault

GET /basecamp/buckets/{project_id}/vaults/{vault_id}/documents.json

#### Create Document

POST /basecamp/buckets/{project_id}/vaults/{vault_id}/documents.json

Content-Type: application/json



{


  "title": "Document Title",


  "content": "<p>Document content with HTML</p>"


}

#### List Uploads in Vault

GET /basecamp/buckets/{project_id}/vaults/{vault_id}/uploads.json

Campfire (Chat) Operations

#### List All Campfires

GET /basecamp/chats.json

#### Get Campfire

GET /basecamp/buckets/{project_id}/chats/{chat_id}.json

#### List Campfire Lines (Messages)

GET /basecamp/buckets/{project_id}/chats/{chat_id}/lines.json

#### Create Campfire Line

POST /basecamp/buckets/{project_id}/chats/{chat_id}/lines.json

Content-Type: application/json



{


  "content": "Hello from the API!"


}

Comments Operations

#### List Comments on Recording

GET /basecamp/buckets/{project_id}/recordings/{recording_id}/comments.json

#### Create Comment

POST /basecamp/buckets/{project_id}/recordings/{recording_id}/comments.json

Content-Type: application/json



{


  "content": "<p>Comment text</p>"


}

Recording Status Operations

All content items (todos, messages, documents, etc.) are "recordings" that can be archived or trashed.

#### Trash Recording

PUT /basecamp/buckets/{project_id}/recordings/{recording_id}/status/trashed.json

#### Archive Recording

PUT /basecamp/buckets/{project_id}/recordings/{recording_id}/status/archived.json

#### Unarchive Recording

PUT /basecamp/buckets/{project_id}/recordings/{recording_id}/status/active.json

Templates Operations

#### List Templates

GET /basecamp/templates.json

#### Create Project from Template

POST /basecamp/templates/{template_id}/project_constructions.json

Content-Type: application/json



{


  "name": "New Project from Template",


  "description": "Description"


}

Pagination

Basecamp uses Link header pagination with rel="next":

Response Headers: 
Link: <https://3.basecampapi.com/.../page=2>; rel="next"

X-Total-Count: 150

Follow the Link header URL for the next page. When next is absent, you've reached the last page.

Important: Do not construct pagination URLs manually. Always use the URL provided in the Link header.

Key Concepts

Buckets and Projects

A "bucket" is a project's content container. The bucket ID is the same as the project ID in URLs:

/buckets/{project_id}/todosets/{todoset_id}.json

Dock

Each project has a "dock" containing available tools. Always check that a tool is enabled: true before using it:

{

  "dock": [


    {"name": "todoset", "id": 123, "enabled": true},


    {"name": "message_board", "id": 456, "enabled": false}


  ]


}

Recordings

All content items (todos, messages, documents, comments, etc.) are "recordings" with:

  • -status: "active", "archived", or "trashed"
  • -parent: navigation to container
  • -Unique IDs that can be used across endpoints

Code Examples

JavaScript

const response = await fetch(

  'https://gateway.maton.ai/basecamp/projects.json',


  {


    headers: {


      'Authorization': Bearer ${process.env.MATON_API_KEY}


    }


  }


);


const projects = await response.json();

Python

import os

import requests



response = requests.get(


    'https://gateway.maton.ai/basecamp/projects.json',


    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}


)


projects = response.json()

Notes

  • -All API paths must end with .json
  • -The gateway automatically injects the account ID
  • -Uses Basecamp 4 API (bc3-api)
  • -Timestamps are in ISO 8601 format
  • -HTML content uses <div>, <p>, <strong>, <em>, <a>, <ul>, <ol>, <li> tags
  • -Rate limit: ~50 requests per 10 seconds per IP
  • -IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments

Error Handling

| Status | Meaning |

|--------|---------|

| 400 | Missing Basecamp connection or bad request |

| 401 | Invalid or missing Maton API key |

| 404 | Resource not found, deleted, or no access |

| 429 | Rate limited (check Retry-After header) |

| 507 | Account limit reached (e.g., project limit) |

| 5xx | Server error (retry with exponential backoff) |

Troubleshooting: API Key Issues

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python <<'EOF'

import urllib.request, os, json


req = urllib.request.Request('https://ctrl.maton.ai/connections')


req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')


print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))


EOF

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with basecamp. For example:

  • -Correct: https://gateway.maton.ai/basecamp/projects.json
  • -Incorrect: https://gateway.maton.ai/projects.json

Resources

  • -[Basecamp 4 API Documentation](https://github.com/basecamp/bc3-api)
  • -[Authentication Guide](https://github.com/basecamp/bc3-api/blob/master/sections/authentication.md)
  • -[API Reference](https://github.com/basecamp/bc3-api#endpoints)
  • -[Maton Community](https://discord.com/invite/dBfFAcefs2)
  • -[Maton Support](mailto:support@maton.ai)

Launch an agent with Basecamp on Termo.

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