A HealthKit API for the Web

Utilize OneTwentyOne's unified API to continuously access your customer's Apple HealthKit data from a web API, with over 100 data types and counting.

Note: The OneTwentyOne API is currently in beta. If you have any questions or feedback, please reach out to us at hello@121health.app or join our Discord.

Getting started

The OneTwentyOne API uses standard OAuth 2.0 protocols. To get started, follow our quickstart guide, where you'll create a client, authorize first user, and make your first API requests.

Guides

Quickstart

Make a client, authorize a user, and make your first request.

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Authentication

Learn how to authenticate your API requests.

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Rate Limits

10,000 requests per day. Free.

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Pagination

Understand how to work with paginated responses.

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Resources

Quantity

Access time series data across 100+ biometrics.

Sleep

Access sleep stages and associated biometrics.

Workout

Access workout data and associated biometrics.

Profile

Access user metadata and scopes.

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