A rate limiting guide was recently added to the Jira developer documentation. See https://developer.atlassian.com/cloud/jira/platform/rate-limiting/.

The guide indicates that rate limit testing should not be performed against the Atlassian production environment due to the potential customer impact.

Marketplace Partners, however, need a means by which they can test their handling rate limit response. Several solutions may be feasible such as providing a separate environment that will not impact customers or a library that partners can run on their own infrastructure.

Note: There is an equivalent request for Jira: https://ecosystem.atlassian.net/browse/ACJIRA-2254