MediaWiki:Apihelp-json-param-utf8
If specified, encodes most (but not all) non-ASCII characters as UTF-8 instead of replacing them with hexadecimal escape sequences. Default when formatversion is not 1.
If specified, encodes most (but not all) non-ASCII characters as UTF-8 instead of replacing them with hexadecimal escape sequences. Default when formatversion is not 1.
Link to this page:
https://wiki.pastlives.space/MediaWiki:Apihelp-json-param-utf8