I'm using gemini api which takes longer than 10 secs sometimes to respond which is causing in a few errors i was thinkking if i could change it to edge function

but not sure how to do it

If you host on vercel you can't exceed a certain time limit

Dosent matter edge or not.

Server Actions inherit the runtime of the page/layout they are called in, so yes you can use edge server actions.

As for the timing out part you'll have to see if switching to edge fixes the issue or not by yourself

It probably will still time out.