From the little information you've given, it's easy to assume that you've fallen into the trap of developing a product before figuring out what the market needs.
In this case, I suspect you've scratched your own itch, so assuming your target market is other techies, talk to them. Lots of them. Find out if your proof of concept is something they want and will pay for.
If yes, tidy it up, make it live, sell it, listen for feedback, iterate.
If no, listen to feedback, understand their problems, solve those problems (a new proof of concept), ask if they'll buy it, etc.
You don't need to be a trained salesman to talk about your product.
No-one is going to steal your idea and if your idea is that easy to steal and execute, it's going to get stolen the moment you launch it anyway.