Function isRecoverableRequestStructureError

packages/kosong/src/errors.ts:247–254

(error: unknown)

] as const;

export function isRecoverableRequestStructureError(error: unknown): boolean {
  if (isToolExchangeAdjacencyError(error)) return true;
  if (!(error instanceof APIStatusError)) return false;
  if (error instanceof APIContextOverflowError) return false;
  if (error.statusCode !== 400 && error.statusCode !== 422) return false;
  const lowerMessage = error.message.toLowerCase();
  return STRUCTURAL_REQUEST_MESSAGE_PATTERNS.some((pattern) => pattern.test(lowerMessage));
}

export function isProviderRateLimitError(error: unknown): boolean {
  if (error instanceof APIProviderRateLimitError) return true;