STEP 1
Select MQTT in workflow
Pick MQTT app in the workflow builder [4] - just one click to select the app.
MQTT Integration
Publish messages to an MQTT broker, and start a workflow when messages arrive on the topics you subscribe to. Works with MQTT 5 brokers such as Mosquitto, EMQX, HiveMQ and AWS IoT Core. Use MQTT inside visual workflows on WEXTL to compose logic that vendor integrations alone cannot cover. Pair it with app triggers and actions on the canvas to build end-to-end automations.
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Supported triggers and actions for MQTT integration
Triggers can detect changes in MQTT and run actions that can create, search or modify data inside MQTT automatically [3] — exactly how you set them.
- Watch messagesStart a workflow when messages arrive on the topics you subscribe to. Checks on your workflow schedule.
- Publish a messagePublish a message to a topic and wait for the broker to confirm it (QoS 1).
How to integrate MQTT in automation workflow?
3 simple steps to make your MQTT connected with other apps in automation workflows on WEXTL. Up to 10 minutes integration set up.
STEP 2
Connect MQTT
When prompted, authorize access to MQTT in WEXTL once. MQTT credentials are encrypted and never shared with WEXTL. Authorization will be reused in any future API calls [3].
MQTT Access Approval
WEXTL wants to integrate with your MQTT account. Approve?
STEP 3
Build a workflow
Build your workflow with MQTT yourself or with WEXTL® AI Builder. Connect MQTT to any available integrations [5], or use HTTP node to go beyond them.
MQTT
Connect MQTT to popular apps on WEXTL
Enter a name of the other app you want to sync with MQTT below. Click on selected app to explore integration options with MQTT. If the app you search for is not available in WEXTL yet, you can use HTTP node [10] instead to integrate it directly.
Example automation with MQTT integration
Select Watch messages trigger from MQTT - this will be a starting point in your automation. Whenever event happens in MQTT, workflow will start [7] from Watch messages node.
Search for Publish a message, connect it as the next step of integration sequence. You can use filters between Watch messages and Publish a message, so only important data pass from Watch messages to the next step. WEXTL gives you full control over the process of MQTT automation. All parts of workflow are visible on the canvas [4].
MQTT on WEXTL has 2 modules for building built-in automations. Explore MQTT documentation for more.
MQTT
Watch messages
Kafka
Performs action
OR
Kafka
Triggers
MQTT
Publish a message
Demonstration of how visual MQTT automation [6] looks in WEXTL.
Frequently asked questions
Common questions about automating MQTT in your workflows.
MQTT is a built-in WEXTL workflow node. In practice, publish messages to an MQTT broker, and start a workflow when messages arrive on the topics you subscribe to. Works with MQTT 5 brokers such as Mosquitto, EMQX, HiveMQ and AWS IoT Core. Configure the node's settings panel to control how it behaves inside your automation.
Drop MQTT onto the visual canvas alongside app integrations and other built-in workflow nodes. Connect it to the steps before and after, configure its parameters, and it runs as part of the automation every time the workflow executes.
No. Most automations are built visually on the canvas by picking triggers, actions, and mapping fields. You can add custom JavaScript with Functions when advanced logic is needed — but our customers do that in rare cases [4].
Yes. WEXTL authenticates every connection per account, encrypts credentials at rest, and lets you enforce approvals and team-level access controls on any automation that uses MQTT.
MQTT runs alongside app integrations on the same workflow canvas. It receives data from upstream steps (triggers or other nodes) and passes results to downstream steps. Refer to our MQTT Documentation for detailed inputs and outputs.
Absolutely. MQTT works with every trigger source and every app integration on WEXTL. Combine it with native app triggers, scheduled polling, or the Custom Webhook node so MQTT can react to events from any external system.
WEXTL is an AI-first visual canvas. The platform allows you to describe automation in plain text — and AI will wire nodes like MQTT inside the workflow builder [4]. You can combine MQTT with app integrations and other built-in workflow nodes (AI Agent, Human in the Loop, Condition, Aggregate Results) to build the exact flow you need.
References
List of sources used to gather information about the MQTT integration.
- MQTT integration source code, module specs and credentials implementation.
- Internal MQTT integration documentation, structured input and output parameters, scopes, and authentication methods.
- This is a built-in WEXTL® workflow node — see the Visual Workflow Builder capability page for how it's used on the canvas.
- WEXTL® Visual Workflow Builder, anonymized data from our technical support team.
- WEXTL® Apps Library
- WEXTL® MQTT App Documentation
- WEXTL® Workflow Scheduler
- WEXTL® HTTP node documentation