Rate limits allow you to control how many occurrences are saved and processed. In turn, this gives you control over how many occurrences count towards your monthly bill.

Each project access token can be individually configured with a different rate limit. Once the limit is reached, all calls to POST items will return HTTP status code 429 Too Many Requests until the next rate limit window begins.

If you go over your rate limit, a new error will be generated in your project: it will show up on your dashboard, on your API errors page, and (depending on your notification settings) you will receive an email. You can then resolve, comment and configure notification settings for the generated error the same way you would for others. Note: these errors are not counted towards your bill.

You can change your rate limits as often as you want.


Starting from a project, Go to Settings -> Project Access Tokens and click on the

button next to the access token to configure.

Next, choose a time window from the rate limit dropdown menu. Choices are:

  1. No Limit
  2. 1 minute
  3. 5 minutes
  4. 30 minutes
  5. 1 hour
  6. 1 day
  7. 1 week
  8. 30 days

Finally, enter in the maximum number of items to be saved and processed in the text box to the left of the dropdown menu and click the

button to save.

e.g. 100 in 5 minutes

Note: New rate limits and changes to existing limits will take effect immediately.


Response Codes

If your access token has a rate limit and has reached it, all successful API calls will result in an HTTP 429 (Too Many Requests) response code. Once the limit is reached, there can be a short delay before our servers begin to reply with a 429. This does not mean that these items will count towards your bill. These items will not be processed and will not appear on your dashboard.

Important! If you're using a custom script or library to POST items you should make sure it can handle the 429 response code.


At the end of your billing cycle, the total charge is calculated based on all items saved and processed. This will not include items that were not processed due to your rate limits.