For instance (more sport related), Strava - https://strava.github.io/api/ and Fitbit - https://dev.fitbit.com/docs/
Best answer by Tim_OVO
I’ve got our official stance on this from our dev team:
At the moment I’m afraid that we’re not planning to be offering something like this in the near future. It’s quite a complex undertaking and our product teams are focused on building a great online experience and working with our members towards our Plan Zero initiative. When this changes in the future we’ll announce it on this topic first.
I’ll stick this as the ‘best answer’ so others know.
Thoughts below please!