This is very cool. I'm curious about why there is a limit on the number of tokens generated per month, when this is only currently offered to unlimited accounts. Since the tokens all expire at the end of the month, tokens can't be horded to use Kagi after a subscription ends. Perhaps it is instead a resource issue where token generation is expensive. In that case though, I would think limiting tokens/day would be more appropriate - there is already going to be a spike to generate new tokens on the first of the month, so if the server can handle that they can handle some users generating a batch of tokens each day.

This is not intended as criticism, just inquisitive.