Running a FastGPT query using the !fast bang correctly fills out the query string (e.g https://kagi.com/fastgpt?query=What+is+Kagi%3F) but does not automatically submit the query. Actually getting a response to your query requires an additional press of the Enter key, or clicking the submit button. I consider this to be a bug.
There is a possibility that !fast is not the only bang that has this issue, but I would not know.
Performing a query with the !fast bang should submit the query immediately. A simple solution would be to simply check if the URL contains a valid query string, and if so, to simulate a click event on the submit button via document.getElementById("submit").click(). I've written a userscript to fix this problem client-side, and it does exactly that.
