Error codes

Errors are returned as JSON: {"error": {"code": "...", "message": "..."}}.

Code	HTTP status	Meaning
`missing_api_key`	401	No X-Api-Key header or api_key query param was provided.
`invalid_api_key`	401	The API key provided does not match any active key.
`inactive_api_key`	403	The API key exists but has been deactivated.
`rate_limit_exceeded`	429	Too many requests for your tier's rate limit.
`not_found`	404	The requested resource does not exist.
`method_not_allowed`	405	The HTTP method is not supported for this route.
`internal_error`	500	An unexpected server error occurred.