# MQTT Binding Spec ```yaml apiVersion: dapr.io/v1alpha1 kind: Component metadata: name: namespace: spec: type: bindings.mqtt metadata: - name: url value: mqtt[s]://[username][:password]@host.domain[:port] - name: topic value: topic1 ``` - `url` is the MQTT broker url. - `topic` is the topic to listen on or send events to. > **Note:** In production never place passwords or secrets within Dapr components. For information on securely storing and retrieving secrets refer to [Setup Secret Store](../../../howto/setup-secret-store)