Mater · Your training baseline

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WHOOP

Recovery, HRV, resting heart rate, sleep, strain, and workouts. Automatic sync every six hours after authorization.

Set up WHOOP once

Create a WHOOP developer app named Mater.
Enable read:recovery, read:cycles, read:sleep, and read:workout. Authorization also requests offline for token refresh.
Register this exact redirect URL:https://mater.run/api/whoop/callback
Enter the app credentials here, then authorize on WHOOP.

App credentials and authorization tokens are encrypted in the private database. They are never included in the dashboard response.

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Use Health Auto Export on your iPhone to send training metrics and workouts directly to your private database.

ONE-TIME IPHONE SETUP

Install Health Auto Export and grant access to the metrics you want to share.
Create two REST API automations: one for health metrics and one for workouts. Use the endpoint and header below for both.
Choose JSON, version 2, Default date range, and enable Batch Requests. For health metrics, enable summaries grouped by day.
Select resting heart rate, HRV, VO₂ max, steps, walking/running distance, and sleep. For workouts, turn route data off.
Set your sync cadence (for example, hourly), save, and enable both automations. Enable Background App Refresh on your iPhone.
Run a Manual Export for each automation to verify it. Backfill the last 90 days in batches when ready.

Background sync timing is controlled by iOS. Detailed setup guide

Endpoint

Header name: Authorization

This token permits uploads only. Keep it private.

Waiting for the first upload from your iPhone.