Each API user is limited to about 6 world generation start requests per minute. This is to ensure fair usage and prevent abuse.Note that this limit is not per API key, but rather per API user.These limits apply to world generation start requests, not to the number of world generations that can run concurrently.Usage is tracked in a rolling window, and the limit is not guaranteed to be exact. For example, you may very occasionally find you can only make 5 requests in a 1 minute window.