detect beats
Every beat and downbeat in a music track, or any audio or video with music in it, in seconds from the start of the file, plus the tempo. pulse_beats are the beats on the tempo grid, pulse_interval apart; beats is everything heard, denser where the model followed hi-hats; pulse is steady, variable or unclear (bpm null). Times are source seconds, before a clip’s trim and placement. Kept on the file. Files over 20 minutes are refused; a file with no audio track comes back silent. Cloud processing.
Authorizations
An API key (es_live_…) from Settings, under API keys, or an OAuth access token.
Headers
Retry a paid dispatch safely: the same key returns the job already dispatched instead of charging again.
The workspace this one call acts in, when it is not the key's own.
Body
An item ref, item id, or the job id that made it.

