| RateLimit-Limit | Allowed limit in the timeframe. |
| RateLimit-Remaining | Number of available requests remaining. |
| RateLimit-Reset | The time remaining, in seconds, until the rate limit quota is reset. |
| X-RateLimit-Limit-Second | The time limit, in number of seconds. |
| X-RateLimit-Limit-Minute | The time limit, in number of minutes. |
| X-RateLimit-Limit-Day | The time limit, in number of days. |
| X-RateLimit-Limit-Month | The time limit, in number of months. |
| X-RateLimit-Limit-Year | The time limit, in number of years. |
| X-RateLimit-Remaining-Second | The number of seconds still left in the time frame. |
| X-RateLimit-Remaining-Minute | The number of minutes still left in the time frame. |
| X-RateLimit-Remaining-Day | The number of days still left in the time frame. |
| X-RateLimit-Remaining-Month | The number of months still left in the time frame. |
| X-RateLimit-Remaining-Year | The number of years still left in the time frame. |
| Retry-After | This header appears on 429 errors, indicating how long the upstream service is expected to be unavailable to the client. |