Anyone know of a simple service to host some code to get a Stripe Token?

Hi all, I'm helping my girlfriend launch her first SaaS. One of my goals was to build the entire thing without any backend. I was able to do this by using Vue and a bunch of 3rd party APIs.

I am really close to finishing this entire project without a single line of backend code, but I'm stuck on the Stripe integration. Because everything on the front end is completely public, I can not call the stripe Tokenization process without exposing my secret key to the world.

I need some simple solution to generate this token. I've looked at both Azure functions, and AWS Lambda's but both of those options look like overkill. I don't want this API code to be complex or else that defeats the purpose of having a backend-free web app.