We limit users to six concurrent connections to our API servers per IP, and at most, 60 requests in any 30 second interval. Customers that hit these limits will have their API requests queued and/or failed with a HTTP 429 response code.
If you need to submit more than 60 API requests at once, we ask that you space out your requests to avoid hitting our rate limits.
Queued ParseHub runs
If you are making several calls to our API that run your projects, you are also limited to the number of queued runs you can have on your account. You can have up to 100 queued runs on our free plan, and up to 100,000 queued runs on any of our paid plans.