Xe.com
Trigger: !usd2eur
Try it
Kagi would openhttps://www.xe.com/currencyconverter/convert/?From=USD&To=EUR&Amount=black+holes
Run @usd2eur in Kagi for Kagi's own results from www.xe.com only
URL pattern: https://www.xe.com/currencyconverter/convert/?From=USD&To=EUR&Amount=query
Searches www.xe.com, filed under Reference.