Main cluster bubble apps are more susceptible to 3rd party API rate limiting since all API calls will get served from the Bubble server (meaning the rate limit is shared across all apps).As a result, Main cluster bubble apps may experience 500 errors related to rate limiting while making API calls to 3rd party APIs. Note that Bubble apps on a Dedicated server instance are less susceptible to this because they are not sharing server resources with the Main cluster.

If you are experiencing 500 errors while making API calls to third-party APIs, the workaround is to wait a bit in between calls or consider sending the call from the browser, when appropriate, if rate limiting is a concern.