Errors

Errors are returned as JSON with an error message.

{
  "error": "Invalid API key."
}

Status	Meaning
`401`	Missing, invalid, expired, or revoked API key.
`402`	The account does not currently have API access.
`403`	The key does not include the required scope.
`404`	Endpoint not found, or direct raw function access blocked.
`405`	Method not allowed.
`429`	Rate limit exceeded.

Rate-limit responses include Retry-After when available.