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


1 Answer 1


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.


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