500 Internal Server Error

Every error of the Spillard Connect API is an RFC 9457 application/problem+json body whose type points here. Branch on errorCode, never on title or detail.

Transient: the same request may succeed when retried later (honour Retry-After when present).

errorCodeMeaning
server.unexpectedAn unexpected error. Retry with backoff; quote `traceId` to Spillard support if it persists.

The full registry is the top-level x-error-codes list (and the ErrorCode schema) of /openapi/v1.json; the API reference is at /scalar.