Claw Messenger MCP server

Send an iMessage, text a phone number, or send SMS/RCS to a contact from any MCP-capable AI agent (Claude, ChatGPT, Cursor, and others). Two-way: the agent can also wait for the human's reply. No Mac required; works from Linux, Docker, Windows, or any cloud.

Backed by Claw Messenger, the Mac-free iMessage, RCS, and SMS API for AI agents.

Tools

| Tool | What it does | | --- | --- | | send_text_message | Send a text to a phone number. iPhone recipients get an iMessage experience; everyone else falls back to RCS or SMS automatically. | | wait_for_reply | Wait for the next incoming message from a registered contact. | | register_contact | Register a phone number the agent may have conversations with. | | list_contacts | List registered contacts. | | check_readiness | Verify the key, plan, and listener are ready before the first send. |

Setup

1. Sign up at clawmessenger.com and copy your API key (cm_live_...) from the dashboard.
2. Add the server to your MCP client configuration:

{
  "mcpServers": {
    "claw-messenger": {
      "command": "npx",
      "args": ["-y", "@emotion-machine/claw-messenger-mcp"],
      "env": {
        "CLAW_MESSENGER_API_KEY": "cm_live_YOUR_KEY"
      }
    }
  }
}

3. Register the phone number you want the agent to text (register_contact), then send a first message and confirm with wait_for_reply. Setup is proven only when a real reply reaches the agent; an accepted or delivered status alone is diagnostic.

Notes and limits

• Messages route through a shared managed sending number; recipients see the conversation in Apple Messages (or their SMS/RCS app). You cannot bring your own number on self-serve plans.
• Inbound messages are delivered only from registered contacts. Plans register 1 to 50 contacts and include 250 to 15,000 messages per month; see pricing.
• Conversational use, not bulk: every self-serve plan caps first-time conversations at 20 distinct new recipients per rolling 24 hours.
• Security details: https://www.clawmessenger.com/security. Agent guide: https://www.clawmessenger.com/llms.txt.