Stack Exchange API offers a mine of crowd-sourced information

Stack Exchange is the family of Q&A websites all based on the Stack Exchange engine.

The Stack Exchange API allows developers to use quite a lot of data from websites on the Stack Exchange network.

The Stack Exchange API is based on HTTP and URLs. The responses are all in JSON.

There is a "Hello World" introduction but  no tutorial for the API other than the documentation

The API enforces a daily limit of 10,000 requests for those with a Key & 300 requests for anonymous calls from a single IP address with no Key.

The API will cut you off if you make more than 30 requests over 5 seconds to any single endpoint.

To discuss about the Stack Exchange API, applications that use the Stack Exchange API, or scripts that work on the Stack Exchange network of websites use the StackApps website or post programming related questions by tagging them with the stackexchange-api tag on StackOverflow.

If you are learning to program with JavaScript & JSON, the Stack Exchange API & Github API return JSON output to play with.

To experiment with the API, I built a small sample to fetch the most popular tags on StackOverflow & their definitions. I'm impressed with how well they have designed their API

Comments