claude-teams

MCP server that implements Claude Code's agent teams protocol for any MCP client.

https://github.com/user-attachments/assets/531ada0a-6c36-45cd-8144-a092bb9f9a19

Claude Code has a built-in agent teams feature (shared task lists, inter-agent messaging, tmux-based spawning), but the protocol is internal and tightly coupled to its own tooling. This MCP server reimplements that protocol as a standalone MCP server, making it available to any MCP client: Claude Code, OpenCode, or anything else that speaks MCP. Based on a deep dive into Claude Code's internals. PRs welcome.

Install

Pin to a release tag (e.g. @v0.1.1), not main. There are breaking changes between releases.

Claude Code (.mcp.json):

{
  "mcpServers": {
    "claude-teams": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/cs50victor/claude-code-teams-mcp@v0.1.1", "claude-teams"]
    }
  }
}

OpenCode (~/.config/opencode/opencode.json):

{
  "mcp": {
    "claude-teams": {
      "type": "local",
      "command": ["uvx", "--from", "git+https://github.com/cs50victor/claude-code-teams-mcp@v0.1.1", "claude-teams"],
      "enabled": true
    }
  }
}

Requirements

• Python 3.12+
• tmux
• At least one coding agent on PATH: Claude Code (claude) or OpenCode (opencode)
• OpenCode teammates require OPENCODE_SERVER_URL and the claude-teams MCP connected in that instance

Configuration

| Variable | Description | Default | |----------|-------------|---------| | CLAUDE_TEAMS_BACKENDS | Comma-separated enabled backends (claude, opencode) | Auto-detect from connecting client | | OPENCODE_SERVER_URL | OpenCode HTTP API URL (required for opencode teammates) | (unset) | | USE_TMUX_WINDOWS | Spawn teammates in tmux windows instead of panes | (unset) |

Without CLAUDE_TEAMS_BACKENDS, the server auto-detects the connecting client and enables only its backend. Set it explicitly to enable multiple backends:

{
  "mcpServers": {
    "claude-teams": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/cs50victor/claude-code-teams-mcp@v0.1.1", "claude-teams"],
      "env": {
        "CLAUDE_TEAMS_BACKENDS": "claude,opencode",
        "OPENCODE_SERVER_URL": "http://localhost:4096"
      }
    }
  }
}

Tools

| Tool | Description | |------|-------------| | team_create | Create a new agent team (one per session) | | team_delete | Delete team and all data (fails if teammates active) | | spawn_teammate | Spawn a teammate in tmux | | send_message | Send DMs, broadcasts (lead only), shutdown/plan responses | | read_inbox | Read messages from an agent's inbox | | read_config | Read team config and member list | | task_create | Create a task (auto-incrementing ID) | | task_update | Update task status, owner, dependencies, or metadata | | task_list | List all tasks | | task_get | Get full task details | | force_kill_teammate | Kill a teammate's tmux pane/window and clean up | | process_shutdown_approved | Remove teammate after graceful shutdown |

Architecture

• Spawning: Teammates launch in tmux panes (default) or windows (USE_TMUX_WINDOWS). Each gets a unique agent ID and color.
• Messaging: JSON inboxes at ~/.claude/teams/<team>/inboxes/. Lead messages anyone; teammates message only lead.
• Tasks: JSON files at ~/.claude/tasks/<team>/. Status tracking, ownership, and dependency management.
• Concurrency: Atomic writes via tempfile + os.replace. Cross-platform file locks via filelock.

~/.claude/
├── teams/<team>/
│   ├── config.json
│   └── inboxes/
│       ├── team-lead.json
│       ├── worker-1.json
│       └── .lock
└── tasks/<team>/
    ├── 1.json
    ├── 2.json
    └── .lock

License

MIT