Hey Product Hunt! 👋 Thanks so much for hunting us, @vancuren! I got tired of building in the dark (tokenrouter.io, necter.ai, sanitycheck.dev, etc). We've all been there: you spend 3 months grinding on a project (or 3 days) and everyone tells you it's the next unicorn. Then you launch... and get crickets. Optimism bias is a startup killer. I built SanityCheck.dev to fix this. Instead of guessing whether people want what you're making, you can post your idea and let the internet tell you the truth. It's designed to give you real signals and actionable feedback before you invest all your time and energy into a full launch. If you're hesitant to share: Remember that an idea is just an idea without the execution behind it. Unlike a polished production launch, SanityCheck is a space specifically designed for messy, early-stage validation. It’s about figuring out if you're heading in the right direction before you put in the grueling work of building it. Here is what you can do: Share early prototypes: Drop your idea or MVP and get immediate feedback. Gauge real interest: See if the market actually cares before you write more code. Build anticipation: Validate your idea and start creating a waitlist early on. Stop asking your friends if your startup idea is good. Get the unvarnished truth, come submit your project today. I’ll be hanging out in the comments all day to answer your questions and check out the ideas you submit! What are you building? Cheers, Russell

SanityCheck

Validate your startup idea in minutes — not months.

Validate your startup idea in minutes — not months.