API design guides

Good API design makes the meaning of a record easy to preserve. For wearable products, that includes its measurement type, unit, time range, origin, and relationship to permission state. This collection covers the boundary between device-specific behavior and your application’s own model.

Use these articles to decide which differences should be normalized and which should remain explicit. A shared interface can simplify development without making unrelated measurements appear equivalent. Test the contract with duplicates, unsupported fields, old records, and interrupted access. Keep a short written explanation of how each source maps into your model so future changes can be reviewed against the behavior your users already understand. The linked examples are starting points for that discussion, not a claim that every wearable exposes one universal endpoint.