Is there a rate limit or speed limit for API usage?

Yes.  Different user types have different API rate limits:

User Type Speed Limit Volume Limit Concurrent Limit
Anonymous Users 20 calls / 10 minutes 50 calls / day 1 call
Logged-In Free Users 2000 calls / 10 minutes 50,000 calls / day 1 call + additional 1 call in the queue
Premium Subscribers 5000 calls / 10 minutes 720,000 calls/ day No limit

In addition to these limits, paying subscribers have access to our special "bulk download" API route for premium databases, which enables you to download entire databases with a single call.

If your application needs more data than these limits allow, please  email us.  

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