Did I just spent 6 months building a product that no one wants

For the past few months, I've been building a product "Linden". Its a low latency deterministic layer for ai agents. Linden helps businesses verify AI-generated outputs before they lead to real-world actions. It evaluates AI outputs against expected schemas, trusted data, and business rules to determine whether an action should be allowed, flagged, regenerated, blocked, or sent for human review.

Linden helps businesses ensure their AI agents don't just produce convincing answers — they make decisions that align with actual business requirements, verified information, and configured limits.

I have tried cold email outreach that didn't work. Published a professional demo across multiple platforms, drove 0 signups. Now, i don't know if I just built something that serves no purpose. However, when i was building this, i did a research, looked at a lot of articles talking about the same thing. If this problem exists, then why no one willing to try it out?