apple-health-skill

# Apple Health Skill Chat with your Apple Health data using AI. Ask about your workouts, heart rate trends, activity rings, VO2 Max, and more. Powered by [Transition](https://www.transition.fun), which syncs with Apple Health to give AI agents access to your fitness data. ## Setup 1. Download [Transition](https://www.transition.fun) and grant Apple Health access 2. Go to **Settings > API Keys** and tap **Generate New Key** 3. Set the environment variable: ```bash export TRANSITION_API_KEY="tr_live_xxxxxxxxxxxxxxxxxxxxx" ``` ## No Auth Required ### Workout of the Day Generate a random structured workout — no account needed. ```bash curl "https://api.transition.fun/api/v1/wod?sport=run&duration=45" ``` **Parameters:** - `sport` — `run`, `bike`, `swim`, or `strength` (default: `run`) - `duration` — minutes, 10-300 (default: `45`) ## Authenticated Endpoints **Base URL:** `https://api.transition.fun` **Auth:** Pass `X-API-Key` header on every request. ### AI Coach Chat Ask questions about your Apple Health data. The AI coach has full context on your workouts and health metrics. ```bash curl -X POST -H "X-API-Key: $TRANSITION_API_KEY" \ -H "Content-Type: application/json" \ -d '{"message": "How has my resting heart rate changed over the last month?"}' \ "https://api.transition.fun/api/v1/coach/chat" ``` Example questions: - "How many workouts did I do this week?" - "What's my VO2 Max trend?" - "How has my sleep been trending this week?" - "Compare my running pace this month vs last month" - "Should I take a rest day based on my recent training?" ### Get Workouts Retrieve scheduled workouts for a date range. ```bash curl -H "X-API-Key: $TRANSITION_API_KEY" \ "https://api.transition.fun/api/v1/workouts?start=2026-02-09&end=2026-02-15" ``` **Parameters:** - `start` — Start date (YYYY-MM-DD, required) - `end` — End date (YYYY-MM-DD, required) - Maximum range between `start` and `end` is 90 days. ### Performance Management Chart (PMC) Get CTL (fitness), ATL (fatigue), and TSB (form) calculated from your Apple Health workouts. ```bash curl -H "X-API-Key: $TRANSITION_API_KEY" \ "https://api.transition.fun/api/v1/performance/pmc" ``` ### Performance Stats Get FTP, threshold paces, heart rate zones, and other metrics derived from your Apple Health data. ```bash curl -H "X-API-Key: $TRANSITION_API_KEY" \ "https://api.transition.fun/api/v1/performance/stats" ``` ### Athlete Profile ```bash curl -H "X-API-Key: $TRANSITION_API_KEY" \ "https://api.transition.fun/api/v1/profile" ``` ### Chat History ```bash curl -H "X-API-Key: $TRANSITION_API_KEY" \ "https://api.transition.fun/api/v1/coach/history" ``` ## Rate Limits | Tier | Read Endpoints | AI Endpoints | |------|---------------|-------------| | Free | 100/day | 3/day | | Paid | 10,000/day | 100/day | ## Tips for Agents 1. **Use coach chat as the primary interface.** It has full context on the user's Apple Health workouts, heart rate, and performance — just ask natural questions. 2. **Check fatigue before recommending hard workouts.** Call `GET /api/v1/performance/pmc` and look at TSB. If TSB is below -20, the athlete is fatigued. 3. **Use the free WOD endpoint for quick workouts.** No auth needed — great for users who just want a workout suggestion. 4. **Date format is always YYYY-MM-DD** for all date parameters.