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Project management - official Basecamp (37signals) server

Basecamp CLI MCP server

Local stdio MCP server built into the official open-source Basecamp CLI; basecamp mcp serves sixteen domain tools covering the Basecamp API using the CLI's signed-in account. It runs locally from basecamp/tap/basecamp-cli (homebrew) with OAuth auth.

Last verified 15 tools3 sources

Install

Terminal
claude mcp add basecamp -- basecamp mcp

Tools

basecamp_projects
Basecamp projects domain tool; takes {"action", "params"} and serves per-action schemas via its describe action.
basecamp_todos
To-dos domain tool.
basecamp_cards
Card Tables domain tool.
basecamp_messages
Message Boards domain tool, including create_comment with a synthetic mentions parameter.
basecamp_campfires
Campfire chat domain tool.
basecamp_boosts
Boosts domain tool.
basecamp_schedules
Schedules domain tool.
basecamp_files
Files domain tool.
basecamp_people
People domain tool.
basecamp_automation
Automation domain tool.
basecamp_reports
Reports domain tool.
basecamp_everything
Everything (cross-project) domain tool.
basecamp_clientside
Clientside domain tool.
basecamp_forwards
Forwards domain tool.
basecamp_recordings
Recordings domain tool, including a synthetic summarize helper for event feed rows.

As documented on October 17, 2026. A running server reports its current list through tools/list.

Notes and caveats

  • Ships inside the basecamp CLI (latest v0.13.2, pre-1.0); no separate binary or credentials beyond basecamp OAuth login.
  • Primary install is curl -fsSL https://basecamp.com/install-cli | bash; also Homebrew cask, AUR, deb/rpm/apk, Scoop, Nix, go install and mise.
  • A sixteenth tool, basecamp_account, is also listed.
  • Flags: basecamp mcp --read-only serves only read-only actions; --domains projects,todos narrows the surface.
  • The vendor does not label its maturity.
  • For no-install use, Basecamp points to the hosted server at mcp.basecamp.com.

FAQ

What does the Basecamp CLI MCP server do?

Local stdio MCP server built into the official open-source Basecamp CLI; basecamp mcp serves sixteen domain tools covering the Basecamp API using the CLI's signed-in account. The vendor documents 15 tools, including basecamp_projects, basecamp_todos, basecamp_cards and basecamp_messages.

How do I add the Basecamp CLI MCP server to Claude Code?

Run claude mcp add basecamp -- basecamp mcp, copied from Basecamp (37signals)'s docs.

Does the Basecamp CLI MCP server need authentication?

Yes, OAuth. Transport: stdio. Status: Unlabelled, last checked October 17, 2026.

Sources

Last verified against 3 Basecamp (37signals) pages, then re-checked independently.

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