> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://learning.postman.com/llms.txt. For full content including API reference and SDK examples, see https://learning.postman.com/llms-full.txt. # Creating your first MQTT request In this example of an MQTT request, you will connect to a public broker, subscribe to topics, publish messages, and visualize the response. ## Create an MQTT request In a Postman workspace, click Add icon and select MQTT icon **MQTT**. Create an MQTT request ## Connect to a broker with Postman To connect to an MQTT service, you need a broker URL. This example uses the `broker.hivemq.com` public broker. You can also use any other public broker or a broker hosted on your local machine. 1. Enter `broker.hivemq.com` as the request **URL**. 2. Click **Connect** to connect to the broker. A message in the response area indicates that you're connected to the broker. Connect to a broker If you're using the Postman web app, use the Postman Desktop Agent to connect to an MQTT broker. See [About the Postman Agent](/docs/getting-started/basics/about-postman-agent/) for more information. ## Subscribe to topics While connected to the broker, click the **Topics** tab. This enables you to create, document, and subscribe to multiple topics. 1. In the **Topics** column, enter `my-topic` as the topic name. 2. Turn on the **Subscribe** toggle. A message appears in the response area indicating that you're subscribed to the topic. Subscribe to a topic ## Publish messages You can use the **Message** tab to compose and send messages to the broker. 1. Click the **Message** tab and enter `{"age": 3, "number of toys": 5}` as the message. 2. Enter `my-topic` as the topic name. 3. Click **Send** to publish the message. An outgoing message appears in the response area indicating that the message was published. Because you've already subscribed to the `my-topic` topic, you'll also view an incoming message with the same body. Go ahead and send a few more messages counting the number of toys you had growing up. Publish messages ## Visualize the response Now that you've subscribed to a topic and published a few messages, you can use the Postman Visualizer to view the messages in a more comprehensible format. 1. Switch to the **Visualization** tab in the response area. You'll notice the messages for the `age` field visualized as a line chart. 2. Click the field name dropdown list to select the field you want to visualize. 3. Click Add icon **Add** to add more fields to the chart and view the changes in the values. 4. Click Line chart icon **Change Visualization Type** to change the chart type. The visualization changes in real time as you receive newer messages for the same topic. Visualization ## Next step Try subscribing to multiple topics at once and publishing messages to them.