Error · 503
circuit_open
That node is temporarily unavailable
What happened
That node is temporarily unavailable and the circuit breaker is open.
What to do
Back off and retry in a minute or two.
The response body carries a recovery object with the same guidance in machine-readable
form: recovery.action names the call to make next, and
recovery.hint is one sentence a model can act on. Not every code carries one — a
401, for instance, has nothing to recover to but a valid token.