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What Stop run does and does not promise

The current prepared alpha has a real product-path cancel contract for active local runtime runs.

What Stop run does

When the selected run is cancellable, Stop run calls the product-path cancel route:

POST /api/tarx/runtime/runs/{runId}/cancel

Expected result for an owned active run:

  • the worker is cancelled when owned by the runtime
  • the run enters cancelled
  • a single run.cancelled event is recorded
  • evidence surfaces remain honest
  • a later ready-for-review overwrite is not expected

What Stop run does not promise

Stop run does not promise:

  • every external process can be killed
  • every already-terminal run can be changed
  • cloud execution can be stopped
  • Supercomputer work can be stopped
  • public release behavior

Common responses

ResponseMeaning
cancelledThe run was stopped.
run already terminalThe run had already completed, failed, or cancelled.
worker process not ownedThe runtime did not own a cancellable active worker for that run.

Support line

Use:

Stop run cancels active local work when the prepared runtime owns the worker. It does not rewrite completed runs.

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