Check remaining credits for your API key
| Field | Type | Description |
|---|---|---|
| credits | integer | Number of credits remaining in your account |
| last_topup_at | string or null | ISO 8601 timestamp of your last credit purchase/top-up |
| Status Code | Description |
|---|---|
| 401 | Unauthorized - API key missing or invalid |
| 404 | Not Found - Unable to retrieve credit information |
| 500 | Internal Server Error - Credit service error |
last_topup_at will be null if no credits have been purchased