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layout: documentation
title: MQTT - Actions
source: external
---
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# MQTT Actions

Publish a message to a topic on an MQTT broker.

## Prerequisites

In addition to the MQTT Action service, the MQTT binding (1.x) must be installed and configured.  The action can refernce the broker(s) that are configured for the MQTT binding.

## Action

* `publish(String brokerName, String topic, String message)`: Publish the message to topic using the specified MQTT broker.