Errors

Nylon uses standard HTTP status codes and returns errors as JSON.

{
  "error": {
    "code": "unauthorized",
    "message": "A valid Nylon API key is required."
  }
}

Common status codes

Status	Meaning
`400`	The request is malformed or contains invalid parameters.
`401`	The API key is missing, invalid, or revoked.
`404`	The requested resource does not exist or is not accessible.
`429`	Too many requests were sent in a short period.
`500`	Nylon encountered an unexpected error.

Do not retry 400 or 401 responses without changing the request or credentials.
Retry 429 and temporary 5xx responses with exponential backoff.
Log the status and error code, but never log the API key.
Use the error message for diagnostics, not as a stable programmatic identifier.