Usage Information and Limits

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 .

Usage Information:

  • YQL can be used for commercial purposes.
  • If we're going to shut down YQL, we will give you at least 6 months notice with an announcement on YDN and in our forum.
  • YQL has a performance uptime target of over 99.5%.
  • YQL relies on the correct operation of the Web services and content providers it accesses.

Rate Limits:

  • Per application limit (identified by your Access Key): 100,000 calls per day.
  • Per IP limits: /v1/public/*: 1,000 calls per hour; /v1/yql/*: 10,000 calls per hour.
  • All rates are subject to change.
  • YQL rate limits are subject to the rate limits of other Yahoo! and 3rd-party Web services.

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