====== Custom MQTT Topics ====== Write your decoder for Custom MQTT topics sent to our MQTT Broker. Read how to configure your access to the MQTT Broker in the **Account Manager > Settings** module: [[..teammanager:settings#mqtt| Configure MQTT Broker]] {{indexmenu_n>13}} {{ :advancedconfiguration:custom-mqtt-topics.png?nolink&1200|}} You can write your decoder (usually for JSON documents). You can then copy a JSON document for test, in the payload area on the right. And press the **Test** button. The result will be displayed below.