I get 429 too_many_runs. What does it mean?

TroubleshootingUpdated November 2, 2026

An account can have 5 runs queued or running at once. A sixth answers 429 too_many_runs.

Fix#

Wait for a run to finish (a done event or a final status), then start the next.
Or cancel one you no longer need with POST /v1/runs/{id}/cancel.
For batches, keep your own queue and start a new run each time one ends.

The limit is per account, not per key: separate keys don't raise it.

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