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API daily limits:

  • Key: 10,000
  • No Key: 300

How these caps are calculated daily, hitting different family sites?

300/10,000 requests on Stack Overflow
300/10,000 requests on Super User
300/10,000 requests on Server Fault


300/10,000 requests on Stack Overflow - Super User - Server Fault

share|improve this question
Justin has the answer, but see also: – Kevin Montrose May 20 '10 at 22:31
up vote 3 down vote accepted

The limit is per site. See this question.

These limit are per-site, per-day. So, with a legitimate key, you can make 10,000 requests a day to each site which exposes the API.

share|improve this answer
No problem. @system – jjnguy May 20 '10 at 22:09

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