Free: API Wikipedia.org

API-Source:
Wikipedia API is at https://www.mediawiki.org/wiki/API:Main_page

API-Example:
https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&formatversion=2&titles=munich

see Wikipedia: https://en.wikipedia.org/wiki/Munich

Local stored JSON: https://api.json-content-importer.com/extra/json/wikipedia-munich-api-result.json


JCI-Syntax for free Plugin:

[[jsoncontentimporter url=https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&formatversion=2&titles=munich basenode=query]
{subloop-array:pages:-1} {pages.title}<br>{pages.extract} {/subloop-array:pages} 
[/jsoncontentimporter]]

In Action:

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