Note: This documentation refers to Gravio 3.8 or older. For Gravio 4 or newer, please refer to the respective documentation on .

In order to send data reading information to third party servers, Hubkit provides a set of API endpoints which can be used to register and receive data readings right when they get processed by HubKit.

API Endpoints

For all POST request, the expected Body content is a JSON string containing the URL HubKit should try and send data to.

For example, a request to should have a Body similar to "" and a valid Content-type: application/json; charset=utf-8 header

POST https://HubKitAddress:29443/readingSubscriber/subscribe API endpoint to add or reactivate a reading Subscriber
POST https://HubKitAddress:29443/readingSubscriber/unsubscribe API endpoint to remove a reading Subscriber
POST https://HubKitAddress:29443/readingSubscriber/isRunning API endpoint to check if a reading Subscriber is active or not

Data Reading Format

The format is similar to what you can see in Gravio Studio Data Viewer and has the following structure:

AreaName string Name of the Area, the sensor is registered in ex: “Area 1”
LayerName string Name of the Layer, the sensor is registered in ex: “Layer 3”
DeviceName string Name, custom or default, the sensor is registered as ex: “EnOcean” (default) or “Door Sensor 1” (custom)
LayerType string Name of the category that reading is ex: “Gravio-Door-JP”
DataType string Name of the data type that reading is ex: “Contact status”
SenderId string ID/MAC Address of the sensor ex: “05-00-0A-3D”
Data object Usually number or string – Parsed data ex: “Contact open” (string) or 24.408 (number)
Timestamp string ISO 8601 formatted string of the UTC time the reading was received by Hubkit at
DataId string Unique Uuid of that data reading, for database storage purposes

How to Test the API

Subscribe to your endpoint, e.g. on if you don’t have an Endpoint yet:

Activate a sensor, and you should see the incoming data on your Endpoint:

Was this helpful?

Yes No
You indicated this topic was not helpful to you ...
Could you please leave a comment telling us why? Thank you!
Thanks for your feedback.