Hypermedia Friendly Model Context Protocol App Architecture

I am working on speedystride.com , a programming tool that helps athletes quickly input workouts on their Apple and Garmin watches. These watches come with a built-in workout programming feature that is especially useful for structured programs. For example, runners will often do interval training, which could be something like 5x1000m with 2 minute rest. And sometimes they’ll want to do a fartlek (Swedish for ‘Speed Play’) where they will vary their speed: run 400 meters fast - run 800 meters slower - spri