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Signal MCP

by rymurr
GitHub
Python
14
  • Linux
  • Apple
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Signal MCP

An MCP integration for signal-cli that allows AI agents to send and receive Signal messages.

Features

  • Send messages to Signal users
  • Send messages to Signal groups
  • Receive and parse incoming messages
  • Async support with timeout handling
  • Detailed logging

Prerequisites

This project requires signal-cli to be installed and configured on your system.

Installing signal-cli

  1. Install signal-cli: Follow the official installation instructions
  2. Register your Signal account:
    signal-cli -u YOUR_PHONE_NUMBER register
  3. Verify your account with the code received via SMS:
    signal-cli -u YOUR_PHONE_NUMBER verify CODE_RECEIVED

For more detailed setup instructions, see the signal-cli documentation.

Installation

pip install -e . # or use uv for faster installation uv pip install -e .

Usage

Run the MCP server:

./main.py --user-id YOUR_PHONE_NUMBER [--transport {sse|stdio}]

API

Tools Available

  • send_message_to_user: Send a direct message to a Signal user
  • send_message_to_group: Send a message to a Signal group
  • receive_message: Wait for and receive messages with timeout support

Development

This project uses:

  • MCP for agent-API integration
  • Modern Python async patterns
  • Type annotations throughout

This server cannot be installed

-
security - not tested
F
license - not found
-
quality - not tested

How are these scores calculated?

local-only server

The server can only run on the client's local machine because it depends on local resources.

An MCP integration for signal-cli that allows AI agents to send and receive Signal messages, supporting direct messages, group messages, and async message handling.

  1. Features
    1. Prerequisites
      1. Installing signal-cli
    2. Installation
      1. Usage
        1. API
          1. Tools Available
        2. Development

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