AI Agents · Lesson

MQTT Protocol for Agent Integration

Broker setup, topic subscription, and message-driven agent activation.

MQTT and IoT Agents

MQTT (Message Queuing Telemetry Transport) is a lightweight publish-subscribe protocol designed for low-bandwidth, high-latency IoT environments. Agents can subscribe to MQTT topics to receive real-time sensor data, and publish commands back to devices.

Installing paho-mqtt

The paho-mqtt library is the standard Python MQTT client. Install it with pip. It supports MQTT 3.1.1 and 5.0, TLS encryption, and all three QoS levels.

# pip install paho-mqtt

import paho.mqtt.client as mqtt

# Create a client instance
client = mqtt.Client(client_id='agent_001', protocol=mqtt.MQTTv311)

# Optional: set credentials if broker requires authentication
client.username_pw_set(username='agent_user', password='YOUR_PASSWORD')

# Optional: enable TLS for secure connections
# client.tls_set('/path/to/ca.crt')

print('MQTT client created:', client._client_id)

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