OutputVerify: Cold-Output Validation for B2B Micro-SaaS

I'm planning to launch my own used product as a SaaS (Advice needed)

Landing page and waitlist tests demand for a description of a product, not for the product itself, and that gap matters more than people give it credit for. We saw a good example of this elsewhere recently, someone ran a waitlist, got zero signups, and it turned out the test itself was broken, not the demand, because nobody commits an email to a vague future thing with no launch date. If you've already got something working internally, you have an advantage most people testing this way don't, you can show real output, not just a pitch. I'd skip the landing page step entirely and go straight to direct conversations with 5-10 people in a similar space, but show them actual results or a real demo of what your internal tool produces, not a description of what it could do for them. "Would you use this" gets you polite yeses. "Here's the actual output this generates, would this be useful to you" gets you a much more honest reaction, because they're evaluating something real instead of imagining a hypothetical. On tipping your hand, unless this is genuinely something a competitor could rush to replicate before you launch, which is rare, I wouldn't worry about it much. The bigger risk isn't someone stealing the idea, it's you spending months building out the public-facing version before confirming anyone outside your own business actually wants it in the first place.