There is an API available. Check this: weightxreps-server/docs/OAUTH.md at main · bandinopla/weightxreps-server · GitHub
I use LiftTrack (https://lifttrackapp.com/) to get the strength workout on my Garmin watch
I’ve actually been testing some strength support in PacePartner lately, with beta integrations to Hevy and Liftosaur. It can generate workouts through chat and sync completed sessions back to Intervals. Still very much a beta, but I’d be genuinely interested in feedback if anyone here tries it.