MQTT Client Publish

Overview

MQTT Client Publish node sends a message payload to a topic on the configured MQTT broker.

Input

Setup Tool

required

Reference to MQTT Client Initialization containing broker connection settings.

Topic

string required

Destination MQTT topic used for message routing on the broker.

Supports dynamic topic names via Template Expressions.

Payload

string

Message body to publish to the selected topic.

Supports dynamic runtime values via Template Expressions.

QoS

string required

Quality of service level:

• 0 At most once
• 1 At least once
• 2 Exactly once

Higher QoS increases delivery guarantees and may increase latency.

Wait for Completion

boolean advanced

If enabled, flow waits for publish completion before continuing.

Disable for asynchronous publish behavior in high-throughput scenarios.

Output

This node does not provide custom output fields.