# Change the health endpoint for heartbeat messages

**URL:** <https://community.cumulocity.com/t/change-the-health-endpoint-for-heartbeat-messages/12161>\
**Category:** Forum\
**Tags:** thin-edge-io, cumulocity\
**Created:** [April 15, 2025, 12:45pm UTC](https://community.cumulocity.com/t/change-the-health-endpoint-for-heartbeat-messages/12161 "2025-04-15T12:45:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![dacsystemsw](https://avatars.discourse-cdn.com/v4/letter/d/e79b87/32.png) [@dacsystemsw](https://community.cumulocity.com/u/dacsystemsw)\
**Post date:** [April 15, 2025, 12:45pm UTC](https://community.cumulocity.com/t/change-the-health-endpoint-for-heartbeat-messages/12161/1 "2025-04-15T12:45:51Z")

</div>

Hi it’s Luca,  
I’ve got a working Thin edge installation connected to Cumulocity. My goal is to make the device status to reflect the status of the my application

 ![image](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/9/8/980cb8a1e0ab8567ca6b0c23850bff8c7c68d809.png)

So I’m trying to change the default health endpoint from the agent to my application, following [this part of the doc](https://thin-edge.github.io/thin-edge.io/operate/c8y/device-availability/#change-the-health-endpoint-for-heartbeat-messages).

In particular, I’m trying with this command:

`mosquitto_pub -r -q 2 -t 'te/device/main//' -m '{"@health": "device/main/service/logger"}'`

But i get:

`te/errors Unexpected error: Invalid entity registration message received on topic: te/device/main//`

Note that I didn’t send any explicit registration message before and so this is what i get when I do `mosquitto_sub -t '#' -v`:

````auto
2025-04-15 14:43:48 te/device/main/service/mosquitto-c8y-bridge {"@id":"luca:device:main:service:mosquitto-c8y-bridge","@parent":"device/main//","@type":"service","name":"mosquitto-c8y-bridge","type":"service"}
2025-04-15 14:43:48 te/device/main/service/mosquitto-c8y-bridge/status/health 1
2025-04-15 14:43:48 te/device/main/service/tedge-mapper-c8y {"@parent":"device/main//","@type":"service","type":"service"}
2025-04-15 14:43:48 te/device/main/service/tedge-mapper-c8y/status/health {"pid":91183,"status":"up","time":1744707843.8817255}
2025-04-15 14:43:48 te/device/main/service/c8y-firmware-plugin {"@id":"luca:device:main:service:c8y-firmware-plugin","@parent":"device/main//","@type":"service","name":"c8y-firmware-plugin","type":"service"}
2025-04-15 14:43:48 te/device/main/service/c8y-firmware-plugin/status/health {"pid":1256,"status":"up","time":1744707844.2420063}
2025-04-15 14:43:48 te/device/main/service/tedge-agent {"@id":"luca:device:main:service:tedge-agent","@parent":"device/main//","@type":"service","name":"tedge-agent","type":"service"}
2025-04-15 14:43:48 te/device/main/service/tedge-agent/status/health {"pid":1257,"status":"up","time":1744707844.2421002}
2025-04-15 14:43:48 te/device/main// {"@health": "device/main/service/logger", "@type": "device"}
2025-04-15 14:43:48 te/device/main///twin/c8y_Agent {"name":"thin-edge.io","url":"https://thin-edge.io","version":"1.4.2"}
2025-04-15 14:43:48 te/device/main///cmd/config_snapshot/c8y-mapper-26768774 {"status":"init","tedgeUrl":"http://127.0.0.1:8000/tedge/file-transfer/luca/config_snapshot/default-c8y-mapper-26768774","type":"default"}```
````