MDN API

Trigger: !mdnapi

Try it

Kagi would openhttps://developer.mozilla.org/en-US/search?q=string+formatting&topic=api

Run !mdnapi in Kagi

URL pattern: https://developer.mozilla.org/en-US/search?q=query&topic=api

Searches developer.mozilla.org, filed under Languages (javascript).

Other bangs for developer.mozilla.org