Manual:$wgOpenSearchTemplates

Search: $wgOpenSearchTemplates
Templates for OpenSearch suggestions.
Introduced in version:1.25.0 (Gerrit change 171573; git #28e37f55)
Removed in version:still in use
Allowed values:(array)
Default value:
[
	'application/x-suggestions+json' => false,
	'application/x-suggestions+xml' => false,
];

Details edit

Templates for OpenSearch suggestions, defaults to API action=opensearch.

Sites with heavy load would typically have these point to a custom PHP wrapper to avoid firing up mediawiki for every keystroke.

Placeholders: {searchTerms}