name: signal-messaging description: Send and receive Signal messages via MCP. Use this skill when you need to interact with Signal messenger - sending messages, reading conversations, or automating Signal-based workflows. compatibility: Requires signal-mcp server built with Cargo. Signal account must be registered.

Signal Messaging via MCP

Interact with Signal messenger through the local MCP server.

Setup

The Signal MCP server is configured in ~/.mcp.json:

{
  "signal": {
    "command": "cargo",
    "args": ["run", "--release", "--example", "signal-server-stdio"],
    "cwd": "/Users/alice/signal-mcp",
    "env": {
      "RUST_LOG": "signal_mcp=info"
    }
  }
}

Prerequisites

1. Clone and build the signal-mcp server:

   cd /Users/alice/signal-mcp
   cargo build --release --example signal-server-stdio
   

2. Register/link your Signal account with the server

Usage

Use read_mcp_resource to interact with Signal:

{"server": "signal", "uri": "signal://..."}

Capabilities

• Send messages to contacts or groups
• Read incoming messages
• List conversations
• Handle attachments

Troubleshooting

• Ensure the server starts: cargo run --release --example signal-server-stdio
• Check logs: RUST_LOG=signal_mcp=debug
• Verify Signal account is registered/linked
• Restart Amp after config changes