Due to limitations in the Safari browser, Kagi cannot be set as your default search engine

Instead, this extension intercepts your request to your default search engine selected in Safari and redirects to Kagi, creating a seamless search experience

It works in Private Browsing as well.

Please note that some requests may still be sent to your default search engine due to this limitation, although the redirect will always be successful.

Kagi search is a quick, user-centric, 100% privacy-respecting search engine with results augmented by non-commercial indexes and personalized searches

It has a clean, high-performance user interface with only the most relevant results and no telemetry, no ads and no collection of private information.