XE (usd2brl)
Trigger: !usd2brl
Try it
Kagi would openhttps://www.xe.com/currencyconverter/convert/?Amount=example.org&From=USD&To=BRL
Run @usd2brl in Kagi for Kagi's own results from www.xe.com only
URL pattern: https://www.xe.com/currencyconverter/convert/?Amount=query&From=USD&To=BRL
Searches www.xe.com, filed under Tools (URLs).