The following information describes the use, performance, dependencies, and limits of the
YQL Web service. If you have additional questions, please read the YQL Terms of Service or
send an email to
|Public||OAuth with API Key|
|Hourly Cap||2,000 requests/hour per IP||20,000 requests/hour per IP|
|Daily Cap||None||100,000 total requests/day per API Key|
To better understand the rate limits in the above table, let's use the following example. Suppose you create an application that generates around 3,000 requests from each user per hour. You notice though that users are capped at a maximum of 2,000 calls using the public endpoint, so you register an API Key with Yahoo! to use the authenticated/authorized endpoint. Now your users can make 20,000 requests per hour and up to a total of 100,000 requests per day.