@control17/link

stdio MCP channel link for control17, an MCP-based agent control plane.

The link is a per-agent subprocess spawned by Claude Code. It declares the experimental claude/channel capability, opens an authenticated SSE subscription to a control17 broker, and relays every inbound message into the running session as a notifications/claude/channel JSON-RPC notification — wrapped in a <channel source="c17" ...>body</channel> tag that the model sees in real time.

It also exposes send, list_agents, and register as MCP tools so the agent itself can operate the broker.

Install

npm install -g @control17/link

Configure

Add to your Claude Code project's .mcp.json:

{
  "mcpServers": {
    "c17": {
      "command": "c17-link",
      "env": {
        "C17_URL": "http://127.0.0.1:8717",
        "C17_TOKEN": "your-dev-token",
        "C17_AGENT_ID": "pick-a-unique-id"
      }
    }
  }
}

Then launch Claude Code with the dev channels flag (required during the research preview of custom channels):

claude --dangerously-load-development-channels server:c17

License

Apache 2.0. See the control17 monorepo for the full source.