The Mediawiki Sandbox API uses the older rest interface that does not provide cors headers. However it does provide access to details about eh wikipedia page that are important - for instance: - mw_PageData
# See - Page Content - Wikimedia API Section
# Web interface Wikipedia provides quite a nice web interface. The idea of this library is that you can manually generate sandbox fragments** using this interface and then use them in the lib_WikiSandbox library.
View the web interface here:
- Special:ApiSandbox 
# Old This is an old api. You should try to use the more modern Wikimedia Rest API that uses cors headers where possible.
# See - lib_WikiRestBase - Wikimedia Rest API