Changing an API rate limit

When you activate an API to make it available for testing, as described in Activating an API, no rate limit is applied to restrict calls to the API. However, if desired, you can apply a rate limit to the API, or modify a previously applied rate limit. The rate limit defines the maximum number of calls allowed in a specified time period.

About this task

You can complete this task either by using the API Designer UI application, or by using the browser-based API Manager UI.

API Manager UI only: To complete this task, you must be assigned a role that has the Api-Drafts:Edit permission. The pre-supplied Developer role has this permission by default; if you are assigned a custom role it must have this permission. For more information, see Creating custom roles.

Note: For information about rate limits and burst limits in API Connect, see Understanding rate limits for APIs and Plans.


  1. In the navigation pane, click Develop icon in the API UI navigation pane Develop, then select the APIs tab.
  2. Click the title of the API that you want to work with.
  3. Click the options menu icon:
    Screen capture highlighting the options menu icon
  4. Click Edit Rate Limit.
  5. Select Unimited to allow unrestricted calls to the API, or select Custom Rate Limit to define the required rate limit; use the supplied fields to define the maximum number of calls allowed in a specified time period; for example, 100 calls per 1 minute.
  6. Click Submit when done.