Stack Exchange API
FreeLiveLast verified 24 Sept 2026
Questions, answers, users and tags from Stack Overflow and other Stack Exchange sites.
Example request
curl -s 'https://api.stackexchange.com/2.3/questions?order=desc&sort=activity&site=stackoverflow&pagesize=2'
Free tier, in plain English
No key is required for basic use. Registering a free app key gives your app its own daily quota instead of sharing an IP-based one.