# getCommandResponseSubscriptionTopic API

Builds the MQTT topic filter used to receive command responses for the
current bridge instance.

---
Canonical: /handbook/api/variables/_purista_mqttbridge.getCommandResponseSubscriptionTopic/
Source: mqttbridge/src/topic/getCommandResponseSubscriptionTopic.impl.ts
Format: Markdown for agents
---

Builds the MQTT topic filter used to receive command responses for the
current bridge instance.

Package: `@purista/mqttbridge`

## Signature

```typescript
const getCommandResponseSubscriptionTopic: GetCommandResponseSubscriptionTopicFn
```