Introducing Greenbelt: The AI Venture Studio That Builds What Survives
We built an autonomous venture studio that validates startup ideas against 1,310+ real failure patterns, then builds the ones that survive. Here's why.
Most startup tools help you build faster. We built one that tells you whether you should build at all.
Greenbelt is an AI venture studio. We validate startup ideas using adversarial AI, then build and ship the ones that survive. Today we're opening the doors — starting with our validation engine, which anyone can try for free.
The Problem We Kept Seeing
Every year, thousands of founders spend months (and their savings) building products nobody wants. The stats are brutal: 90% of startups fail, and the #1 reason is "no market need." They built something, launched it, and discovered the hard way that the idea was flawed from the start.
The tools that exist today don't help. Business plan templates, lean canvas worksheets, AI chatbots that say "Great idea!" to everything — none of it actually stress-tests whether an idea will work.
We wanted something that would tell founders the truth before they write a single line of code.
What We Built
Greenbelt is two things:
1. An adversarial validation engine. Your idea goes through a structured debate. A Builder AI constructs the strongest possible case for why it will succeed. A Guardian AI systematically tries to destroy it — matching it against 1,310+ documented startup failure patterns extracted from real post-mortems. An Adjudicator weighs the evidence and delivers a verdict with specific conditions for success.
This isn't a vibe check. It's a trial.
2. An autonomous product factory. Ideas that survive validation can be built by our AI factory — the same system that's already shipped 6 production-grade products with real authentication, billing, and infrastructure. From validated idea to revenue-ready product.
Why Adversarial?
Because confirmation bias kills startups.
When you tell a friend about your idea, they say "That sounds amazing!" When you use most AI tools, they do the same thing — with more bullet points. You leave feeling great. Then the market doesn't care.
Our Guardian doesn't care about your feelings either. It cares about whether your idea matches patterns that have killed real companies. It checks timing, competition, market dynamics, unit economics, and execution risk. If there's a fatal flaw, it will find it.
That's not pessimism. That's saving you six months and your savings account.
The Startup Graveyard
At the core of our validation engine is what we call the Startup Graveyard — a database of 1,310+ startup failures with analyzed post-mortems. Every failure is coded into specific, actionable patterns.
Not "ran out of money" — that's a symptom. We track the causes: "entered consolidating market with undifferentiated product," "B2B play with enterprise sales cycle but SMB pricing," "marketplace with unsolved chicken-and-egg problem."
When your idea hits the Guardian, it's checked against every one of these patterns. If your AI-powered scheduling tool looks like 47 other scheduling tools that failed the same way, you'll know before you build.
Introducing VaaS: Validation as a Service
Today we're launching the validation engine as a standalone product at vaas-greenbelt.vercel.app.
Three tiers:
Quick Check (Free) — Instant pattern matching against the most common failure modes. Takes 30 seconds, no signup required. Good for a gut check.
Guardian Debate ($29/mo) — The full adversarial treatment. Builder vs Guardian, three rounds, with a detailed verdict emailed to you. Also available as a single report for $14.99.
Venture Verdict ($199/mo) — Everything above, plus real-time market research: competitor analysis, market sizing, trend data, and a full research dossier. The verdict is grounded in current market reality, not just historical patterns. Single reports available for $49.99.
What's Next
We're not stopping at validation. Greenbelt is a full venture studio:
- **Validate** — adversarial AI stress-tests your idea
- **Research** — market intelligence and competitor analysis
- **Build** — our autonomous factory turns validated ideas into production software
- **Ship** — deployed with billing, auth, analytics, and custom domains
We've already shipped 6 products through this pipeline. Now we're opening it up so anyone can use the same system.
Start with a free validation. If your idea survives the Guardian, we'll build it for you.
Try It Now
Head to vaas-greenbelt.vercel.app and test your idea. Free, instant, no signup.
If you want the full adversarial debate — the kind that finds the flaws your friends won't mention — upgrade to Guardian Debate. Your idea (and your bank account) will thank you later.