What is session video?
Session video is a recorded capture of a browser run, written to durable storage and fetched afterwards by run id. Recording is opt-in per call rather than always on, a recorded run is annotated by default so the cursor travel is visible, and the recording holds a tail so its last frame is the result page rather than the moment before the final click.
Why it matters
When automation acts on consequential authenticated workflows, "it ran" is not enough — you need to see what it did. Opt-in is the honest default: storage is a real cost, and most runs are never watched again.