FreeStyle Libre Integration

FreeStyle Libre integration guide

With our FreeStyle Libre Integration you can access Athlete, Body data, all within one single integration to Terra 🎉
Below are key steps to integrate with FreeStyle Libre

1. What you need to integrate with FreeStyle Libre

  • Terra API Key
    • Once you sign up, we will provide you with an API key used to access our API
  • Developer ID
    • We will provide you with a Developer ID, which allows Terra to identify users that belong to you, and associate API traffic to you.
  • Callback/Webhook URL
    • You will need to set up a server (or use a testing environment like that accepts POST requests from Terra

2. Data format

All data is sent to your webhook in JSON format in the form of 5 different types of payloads: Activity, Athlete, Body, Daily, Sleep; depending on your needs, you may select a subset of the aforementioned, and request less data from your users.
Examples of data payloads can be found here. If you would only like to receive specific fields out of the ones available, you may also select only the ones relevant to your needs and omit the rest. The following is an example of the data payload you may expect from an activity coming from Terra.


3. Receiving data for your FreeStyle Libre integration - WEBHOOKS webhooks

Our infrastructure revolves around webhooks. When setting up your Terra account, you will be prompted to provide a callback URL, to which Terra may send PUSH data using POST requests.

Your FreeStyle Libre integration with Terra supports delivery of data without needing to periodically request it yourself. We query FreeStyle Libre for new data every 20 minutes, and POST normalized data to your webhook whenever data is available.

4. Request data for your FreeStyle Libre integration - HTTP endpoints

You may also use HTTP requests with your FreeStyle Libre integration in case you wish to request historical data or data over extended periods of time.

Most HTTP endpoints can take additional parameters start_date and end_date which allow you to request for data over a specific period for the given user.

5. Front end - End User Experience

We provide a front end solution for your end users to authenticate with Terra and be linked back to your callback URL through your Terra developer ID.

In order to use the widget integration, simply open a WebView within your app pointing to with ?X-API-Key=YOUR_API_KEY&dev-id=YOUR_DEVELOPER_ID as query parameters. Additional configuration parameters can be passed into the widget for customization options.

Any user following through with authentication using the above will be linked back to your Terra account.