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Stream terminal · not an HTTP error. This code arrives in the typed terminal error event on the run’s stream, when a run that started dies because the engine’s own model call failed in transport — auth, quota, an upstream outage. The run ends with status error; only signed receipts settle and the rest of the reservation is released.

The shape

message is prose for humans and may change; program against code. The same event is the last entry of the durable log (GET …/events), so a missed stream still shows the typed ending. Stream codes are an open enum — handle an unknown code like internal.

How to fix

  • Retry the run once the upstream recovers — this is a transient transport failure on our side of the model seam, not a problem with your query.
  • The money contract held: check the run’s spend_usd — everything beyond signed receipts was released.
  • If it persists, save the run id and contact support.

Reproduce it

Rehearse the run-level error ending (typed terminal, reservation released) with the FN_TEST_ERROR sentinel — deterministic, $0.