️ Error → HTTP Status Code Convention

The source generators use convention-based name matching to determine HTTP status codes automatically. No configuration needed for the common cases:

Error Name Pattern HTTP Status Examples
*NotFound*, *DoesNotExist*, *Missing* 404 UserNotFoundError, RecordMissingException
*Validation*, *Invalid*, *Malformed* 422 ValidationError, InvalidInputException
*Unauthorized*, *Unauthenticated* 401 UnauthorizedError, NotAuthenticatedException
*Forbidden*, *AccessDenied* 403 ForbiddenError, AccessDeniedException
*Conflict*, *Duplicate*, *AlreadyExists* 409 ConflictError, DuplicateResourceException
*RateLimit*, *Throttle* 429 RateLimitError, ThrottleException
*Timeout*, *TimedOut* 408 TimeoutError, RequestTimedOutException
(default) 400 Any other error type

For non-convention errors use IError.Tags["HttpStatusCode"] or SmartEndpoints' [SmartFilter] for explicit mapping.