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Full detail: Where this data comes from
Terra is a unified wearables and health-data API that aggregates data from 500+ wearables, fitness trackers, and health apps - Garmin, Fitbit, Oura, Apple Health, Whoop, Strava, Google Fit, Polar, Withings, and many more - behind a single normalized REST interface. Developers connect end users through the Terra Widget or a custom authentication flow, then receive normalized Activity, Body, Daily, Sleep, Nutrition, Menstruation, and Athlete data. Terra's primary delivery model is asynchronous: requested and newly available health data is streamed to a developer-configured webhook destination rather than returned inline, with REST read endpoints available for on-demand historical pulls. All requests use two headers, dev-id (public) and x-api-key (secret).
APIs.json: https://raw.githubusercontent.com/api-evangelist/terra-api/refs/heads/main/apis.yml
- Wearables
- Health Data
- Fitness
- Aggregator
- Webhooks
- Digital Health
- Created: 2026-07-03
- Modified: 2026-07-03
Connect end users to their wearable and health accounts. Generate a Terra Widget session or a custom authentication link, mint auth tokens for the Terra mobile SDKs, and deauthenticate users to revoke data access.
- Human URL: https://docs.tryterra.co/health-and-fitness-api/user-authentication
- Base URL:
https://api.tryterra.co/v2
- Authentication
- Widget
- User Onboarding
- Documentation
- API Reference
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Look up connected users and their metadata. Retrieve a single user by Terra user ID or your reference ID, list all connected user IDs (subscriptions) with pagination, and batch-query multiple users at once via bulk user info.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/readme
- Base URL:
https://api.tryterra.co/v2
- Users
- Subscriptions
- Management
Retrieve normalized workout and exercise sessions for a user over a date range - GPS routes, heart-rate zones, distance, calories, power, cadence, and per-activity samples. Streamed to your webhook when to_webhook is true.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/data-models
- Base URL:
https://api.tryterra.co/v2
- Activity
- Workouts
- Exercise
Retrieve body and biometric measurements for a user - weight, body composition, blood pressure, blood glucose, SpO2, hydration, temperature, and continuous heart-rate samples - normalized across every supported device.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/data-models
- Base URL:
https://api.tryterra.co/v2
- Body
- Biometrics
- Heart Rate
Retrieve day-level aggregated summaries for a user - steps, distance, active and total calories, active durations, heart-rate summaries, and stress - rolled up per calendar day across supported wearables.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/data-models
- Base URL:
https://api.tryterra.co/v2
- Daily
- Steps
- Summaries
Retrieve sleep sessions for a user - total, light, deep, and REM durations, sleep stages, respiration, heart-rate variability, and readiness or recovery metrics - normalized across Oura, Whoop, Garmin, Fitbit, and others.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/data-models
- Base URL:
https://api.tryterra.co/v2
- Sleep
- Sleep Stages
- Recovery
Retrieve logged nutrition and dietary intake for a user - meals, macronutrients, micronutrients, water intake, and per-meal detail - from apps such as MyFitnessPal and other supported nutrition sources.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/data-models
- Base URL:
https://api.tryterra.co/v2
- Nutrition
- Diet
- Macros
Retrieve menstrual cycle and reproductive health data for a user - cycle phases, period days, predicted and actual menstruation events, and related symptoms - from cycle-tracking apps and wearables.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/data-models
- Base URL:
https://api.tryterra.co/v2
- Menstruation
- Cycle Tracking
- Womens Health
Retrieve the athlete profile for a connected user - name, age, sex, height, weight, country, and other demographic attributes reported by the upstream provider - to enrich and contextualize their health data.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/data-models
- Base URL:
https://api.tryterra.co/v2
- Athlete
- Profile
- Demographics
Discover which of Terra's 500+ wearables, trackers, and health apps are available to your account. List supported integrations, and query a detailed view filtered by the data scopes and SDKs each provider supports.
- Human URL: https://docs.tryterra.co/reference/health-and-fitness-api/supported-integrations
- Base URL:
https://api.tryterra.co/v2
- Integrations
- Providers
- Catalog
Terra's primary data-delivery mechanism. Rather than a polling or WebSocket transport, Terra streams normalized health data and lifecycle events - auth, deauth, connection errors, and activity/body/daily/sleep/nutrition/menstruation payloads - by HTTP POST to a developer-configured webhook endpoint, signed for verification. Historical data requests with to_webhook=true are fulfilled asynchronously to this same destination.
- Human URL: https://docs.tryterra.co/health-and-fitness-api/integration-setup/setting-up-data-destinations/webhooks
- Base URL:
https://api.tryterra.co/v2
- Webhooks
- Data Streaming
- Events
FN: Kin Lane Email: kin@apievangelist.com