MQTT MCP Server

MQTT/IoT Bridge for AI Assistants

Connect your AI assistant to IoT device networks via MQTT. Subscribe to sensor topics, publish commands, monitor device
health, and set threshold alerts — all through the Model Context Protocol.

Works with any MQTT 3.1.1/5.0 broker: Mosquitto, HiveMQ, EMQX, AWS IoT Core, Azure IoT Hub, or your local Home Assistant
instance.

Tools

• connect — Connect to any MQTT broker (TCP, TLS, WebSocket). Supports authentication.
• subscribe — Subscribe to topic patterns with MQTT wildcards (+, #). Messages buffer in the background.
• publish — Publish messages to topics — plain text or JSON. Supports QoS 0/1/2 and retained messages.
• list_topics — Discover active topics on the broker with message counts and payload previews.
• monitor_device — Watch a device topic, auto-parse sensor payloads, compute live statistics.
• set_alert — Define threshold alerts on numeric values. Get notified when sensor readings cross limits.

Installation

{
  "mcpServers": {
    "mqtt": {
      "command": "node",                                                                                                   
      "args": ["/path/to/mcp-mqtt/dist/index.js"]
    }                                                                                                                      
  }                                                       
}

Use cases                                                                                                                  
 
- Discover all topics on an unfamiliar broker                                                                              
- Monitor a temperature sensor with auto-computed min/max/avg statistics
- Publish commands to smart devices via natural language                                                                   
 
License                                                                                                                    
                                                          
MIT — full source on archimedes.market