How to Connect Garmin to ChatGPT and Claude.ai

Use the direct Garmin Connect → Intervals.icu connection, not Strava as the main bridge. When one recent Garmin workout is visible in Intervals.icu with GPS, pace, heart rate, laps or intervals, sign in to STAS and ask ChatGPT or Claude.ai to update your data.

• ✓Your watch must already sync correctly to Garmin Connect.
• ✓You need an Intervals.icu account and access to Settings → Connections.
• ✓Use the same Intervals.icu account when signing in to STAS, ChatGPT, and Claude.ai.
• ✓If you also use Strava, keep it for social sharing or extra analysis, not as the preferred STAS data path.

1. 1Open Garmin Connect and sync the watch first. If the workout is missing there, Intervals.icu and STAS cannot see it.
2. 2Open Intervals.icu → Settings → Connections and connect Garmin. Enable completed activity download and the health or wellness fields you want STAS to use.
3. 3If you plan workouts in Intervals.icu, enable Garmin planned workout upload and test one easy workout before relying on a key session.
4. 4Open Intervals.icu → Activities and check one recent Garmin workout.
5. 5Only after the workout looks useful in Intervals.icu, sign in to STAS with that Intervals.icu account.
6. 6In ChatGPT, open STAS GPT. In Claude.ai, add STAS as a custom connector.

Check a real workout, not only the connection screen. STAS can only coach from fields that reached Intervals.icu.

• ✓Sport type, date, duration, distance, GPS track, pace, and elevation.
• ✓Heart rate, cadence, power, Training Effect, VO2max, recovery, and other Garmin-specific fields you care about.
• ✓Lap, split, or interval structure for workout analysis.
• ✓Notes or post-workout report if you want STAS to understand how the session felt.
• ✓A second new workout syncing automatically after the first setup.

• ✓Completed workouts with distance, duration, pace, GPS, elevation, laps, splits, intervals, and sport type.
• ✓Physiology fields such as heart rate, cadence, power, Training Effect, VO2max estimate, recovery, and zones when they reach Intervals.icu.
• ✓Planning context from Intervals.icu: calendar, upcoming workouts, completed sessions, reports, goals, and your saved STAS rules.
• ✓Only the data available to STAS at the time you ask ChatGPT or Claude.ai to update your data.

ChatGPT and Claude.ai use the same STAS data layer. The authorization path is different in each AI app.

Garmin is the strongest path for sending planned workouts from Intervals.icu back to the watch. Still, test the exact workout type, targets, and sport profile on one easy day before trusting a race-specific session.

• ✓STAS does not invent missing Garmin fields. If Intervals.icu does not show laps, HR, power, or wellness data, ChatGPT and Claude.ai should not make strong conclusions from it.
• ✓Structured workout behavior can vary by watch model, sport profile, firmware, and how the workout is written in Intervals.icu.
• ✓For coaching quality, direct Garmin → Intervals.icu is preferred over Strava-routed activities.

Strava’s official MCP connector is useful if you want Claude to answer questions from live Strava data. It is read-only and focused on Strava history, trends, and training load. STAS is different: it is a training workflow around Intervals.icu, your saved profile, goals, rules, workout details, calendar planning, and approved plan write-back.

• ✓Use the Strava connector when the question is mainly about Strava history inside Claude.
• ✓Use STAS when you want ChatGPT or Claude.ai to coach from Intervals.icu data, saved context, and your plan.
• ✓For STAS quality, connect Garmin directly to Intervals.icu. Strava-routed activities can be visible but may hide details STAS needs: pace, HR, power, laps, and intervals.

• ✓If ChatGPT or Claude.ai says the Garmin workout is missing, first check whether it is visible in Intervals.icu.
• ✓If Intervals.icu shows the workout without laps, HR, power, or GPS, fix the Garmin → Intervals.icu connection before asking STAS to analyze it.
• ✓If a planned workout does not appear on the watch, check the Intervals.icu Garmin upload setting, sync Garmin Connect, and test a simple workout.
• ✓If Claude does not see STAS tools, reopen the chat and make sure the STAS connector is enabled for that chat.

This page follows the STAS Intervals-first setup rules and Intervals.icu’s direct Garmin connection model. If a field matters, verify it in Intervals.icu before relying on AI analysis.