Some organizations don't want a turnkey wellness benefit — they want to build ONU's data aggregation and interpretation capability directly into their own product. The ONU API is built for exactly that use case: insurers, employers with existing internal health platforms, and health-technology companies looking to add wearable aggregation and biomarker interpretation without building it from scratch.
What it provides
What the API provides
Wearable data aggregation
A single integration point for Apple Health, Whoop, and Garmin data, and most other trackers that sync into those platforms.
AI health engine access
The same pattern-recognition and plain-language interpretation layer that powers the ONU app.
Biomarker interpretation
Structured extraction and explanation of uploaded lab results, in the same claims-safe, educational framing.
Composite scoring logic
Access to the same methodology behind the ONU Score, for partners who want a similar composite metric.
Compliance
Data handling and compliance for API partners
Every API integration operates under the same security and compliance framework as ONU's consumer product — encryption in transit and at rest, strict access controls, and the compliance certifications described on the Security & Compliance page. The ONU API is not a general-purpose health data marketplace and is not intended for use cases involving the sale of individual, identifiable health data to third parties.
Approach
Integration approach and technical scope
Rather than a fully open, self-serve developer platform, ONU's API is deployed through a scoped integration process — partners work directly with ONU's team to define exactly which capabilities fit their product. This approach reflects the sensitivity of the underlying data: broad, unscoped API access to health information carries real risk.
Getting started
Getting started as an API partner
Because each integration is scoped to the partner's specific product and regulatory context, there's no self-serve API signup — contact the ONU team directly to discuss your use case. If you're specifically exploring a workplace wellness benefit rather than a technical integration, ONU for Companies may be the more direct fit.
FAQ
Frequently asked questions
ACTION
Know it before it happens
ONU provides you with tools to build your healthy future; now it's your time to use them!