Have a gander at questions tagged with api.
The tag wiki already provides guidance that API questions are, in general, off-topic here.
But there are a bunch of questions that are essentially asking if such-and-such site has an API. Some samples:
- Does Hacker News have an API?
- Foursquare data stream
- API access to Cognito forms
I can't imagine that we want these questions. They seem to me to be another form of "help me find a web app that does X".
On the other hand, an API is a feature of a web app/site, and so the argument could be made that asking about an API is asking about a feature and should be allowed.
Then again, following that argument, the only possible answers are "No, it doesn't" or "yes, it does" (with a link to the API documentation). Any further questions about how to work with the API would be out-of-bounds.
So, the question is, what do we do with these questions?