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Signal MCP

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Integrations

Allows AI agents to send and receive Signal messages, supporting direct messages to users, messages to groups, and processing of incoming messages with async support and timeout handling.

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

Install signal-cli: Follow the official installation instructions
Register your Signal account:
signal-cli -u YOUR_PHONE_NUMBER register
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

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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.

ID: ulcycnemge