How to use wikipedia api if it exists? [closed]

Answer 1

If you want to extract structured data from Wikipedia, you may consider using DbPedia http://dbpedia.org/

It provides means to query data using given criteria using SPARQL and returns data from parsed Wikipedia infobox templates

There are some SPARQL libraries available for multiple platforms to make queries easier

Answer 2

Have a look at the ApiSandbox at https://en.wikipedia.org/wiki/Special:ApiSandbox That is a web frontend to easily query the API. A few clicks will craft you the URL and show you the API result.

That is an extension for MediaWiki, enabled on all Wikipedia languages. https://www.mediawiki.org/wiki/Extension:ApiSandbox