Threadline MCP Server

Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config.

Local serverstdioPython

What is the Threadline MCP Server?

Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config.

What the server does

Coherence infrastructure for your self-evolving agent.

Credentials and setup notes

  1. macOS with Messages.app signed into an Apple ID 2. Full Disk Access for your terminal app (System Settings → Privacy & Security → Full Disk Access → add Terminal.app or iTerm) 3. imsg CLI installed: 4. Automation permission for Messages.app — macOS will prompt on first send > Photo attachments: If you want your agent to process images and files sent via iMessage, the

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Maintainer setup documentation.

How to install the Threadline MCP Server

{
  "mcpServers": {
    "threadline": {
      "command": "npx",
      "args": ["-y", "instar"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  1. macOS with Messages.app signed into an Apple ID 2. Full Disk Access for your terminal app (System Settings → Privacy & Security → Full Disk Access → add Terminal.app or iTerm) 3. imsg CLI installed: 4. Automation permission for Messages.app — macOS will prompt on first send > Photo attachments: If you want your agent to process images and files sent via iMessage, the

Example prompts to try

  • “Use Threadline to Self.”
  • “Use Threadline to Prerequisites.”
  • “Use Threadline to Configuration.”

Frequently asked questions

Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.