Mac OS X (versions 10-13) stores FindMy cache data in an unencrypted format at: $HOME/Library/Caches/com.apple.findmy.fmipcore/Items.data Copy This can be accessed on official Mac hardware and virtual environments using Docker-OSX the YMMV with the Docker approach.
If you need an API, AirPinpoint supports both AirTags and third-party MFI trackers with a REST API