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:
- Verify your account with the code received via SMS:
For more detailed setup instructions, see the signal-cli documentation.
Installation
Usage
Run the MCP server:
API
Tools Available
send_message_to_user
: Send a direct message to a Signal usersend_message_to_group
: Send a message to a Signal groupreceive_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
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.
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