WikiCFP

Trigger: !cfp

Try it

Kagi would openhttps://wikicfp.com/cfp/servlet/tool.search?q=black+holes&year=f

Run !cfp in Kagi

URL pattern: https://wikicfp.com/cfp/servlet/tool.search?q=query&year=f

Searches wikicfp.com, filed under Reference.