Looking for feedback on an open source AI coding terminal idea

I'm building an open source experiment called DevTokn and would love honest feedback before investing more time into it.

The idea is simple: an AI coding terminal where users can optionally view unobtrusive sponsor placements to earn credits that offset AI costs. Sponsors never see your repository, prompts, or code.

I'm mainly trying to answer three questions:

1. Would this save enough money to interest you?

2. What would make you trust a tool like this?

3. What's the biggest flaw in the idea?

I also put together a 30 second demo explaining the concept:

http://devtokn.vercel.app/