Basecamp MCP Server for Claude DesktopGive Claude Desktop instant access to 17 tools to Complete Todo, Create Comment, Create Project, and more

This is separate from archiving or trashing — a completed to-do remains active but is marked as done. Use uncomplete_todo to reverse this action. Mark a to-do item as completed

). The recording_id is the unique numeric ID of the item you want to comment on. The content must be provided as rich text (HTML). All subscribers to the recording will be notified of the new comment. Add a comment to any Basecamp recording

The project will be initialized with default tools (message board, to-do set, schedule, etc.) enabled via its dock. Returns the newly created project with its numeric ID and dock tool IDs. Create a new project in Basecamp

Requires the todolist_id and the content (title) of the to-do. Optionally include a rich text description, assignee IDs (array of person IDs), and a due date in YYYY-MM-DD format. The to-do will be created as pending (not completed). Create a new to-do item in a to-do list

Get full details of a specific message

Use this to verify connectivity or identify the current operator. Get the authenticated Basecamp user profile

Use this to look up details about a team member or assignee. Get full details of a specific person

). The dock contains the IDs you need to access tools like the to-do set or message board. Get full details of a specific project

Get full details of a specific to-do item

Each message includes title, content preview, author, category, and creation date. You need the message_board_id which can be found via the project dock. List all messages on a project message board

Useful for finding assignee IDs before creating or updating to-dos. List all people in the Basecamp account

Returns names, emails, and roles. Useful for checking team composition before assigning tasks. List all people assigned to a specific project

Optionally filter by status: "active" (default), "archived", or "trashed". Each project includes its name, description, purpose, dock (enabled tools), and bookmark status. List all projects in Basecamp

By default returns only pending (not completed) items. Set completed to true to see completed items instead. Each to-do includes its content, assignees, due date, completion status, and comments count. You need the todolist_id which can be found via the project dock. List all to-dos in a specific to-do list

Use this when a previously completed task needs to be reopened or reworked. Mark a completed to-do item as pending again

At least one of name or description must be provided. Returns the updated project details including the full dock listing. Update an existing project in Basecamp

At least one field must be provided. Does not affect completion status — use the complete_todo or uncomplete_todo tools for that. Update an existing to-do item in Basecamp