Real market signals. One week.

Don't build.
Don't commit.
Not before you get a greenlight.

Millions of startup founders build before they validate. Some quit their corporate jobs to chase an idea; some move across the world to start up in the US - committing time and money without ever asking the market. Greenlight runs real market validation - real outreach, real people, real responses, so founders can decide based on evidence and real market signal.

Get Your Greenlight → See how it works
The problem

Every founder validates eventually. Most do it six months too late.

You tell a friend. They say "amazing idea." You ask ChatGPT. It gives you a go-to-market plan. You feel ready. You build. Three months later, the market says nothing. Not "no." Just silence.

The brutal truth. None of those people were the market. The only validator that matters is a stranger with no reason to be kind.

Which one sounds like you?

The traps that look like progress.

Six patterns of validation that aren't validation. Each one feels productive in the moment. None of them are the market.

01
The AI-Validated Founder
You asked ChatGPT if your idea was good. It gave an enthusiastic yes and a SWOT analysis. None of those were customers.
"ChatGPT will never tell you your idea is bad."
02
The Inner Circle Prisoner
Your partner is supportive. Your friends are encouraging. Or one skeptical voice killed an idea that might have worked. Neither outcome came from the market.
"The people who love you can't tell you if strangers will pay."
03
The AI-Empowered Builder
AI made building ten times faster. So you ship before you ask. You pivot based on one customer's reaction, then the next. That isn't validation. It's guessing on a sample of three.
"You don't have a product problem. You have a sample-size problem."
04
The Product Perfectionist
You've improved the product six times and traction never came. You assume the product is the problem. You've never asked if the market wanted it at all.
"The market didn't reject your product. It never knew it existed."
05
The Idea Collector
You generate ideas constantly. You analyze them, refine them, talk about them, run them through AI. You never test one with the market, because the next idea is always more interesting.
"Stop collecting ideas. Start collecting evidence."
06
The Serial Pivoter
You've pivoted three times this year. Each pivot felt like learning. But every pivot was based on a new unvalidated assumption.
"You're not pivoting. You're guessing twice."
How it works

One week. Real outreach. Real conversations. A real verdict by the end of it.

We deploy AI agents to run a real market validation on your behalf. Real outreach to real strangers who match your customer profile. Real community posts in the places they live online. A test landing page built specifically for your idea. Real-time monitoring of every response. And when it matters most, real human conversations: with you, with our trained interviewers, or with our research partners. The AI is the mechanism. The market is the validator. Each day below has more depth if you want it.

Day 1
Sharpen the hypothesis
We turn your idea into a precise, testable claim and identify the single riskiest assumption. Everything this week tests it.
We extract the riskiest assumption hiding inside your idea. The one claim that, if wrong, invalidates everything else. We map who your customer is, what they actually do today, why they would pay, and what their best current alternative looks like. By the end of Day 1 you have a falsifiable hypothesis. Not a question. A claim the market either supports or contradicts.
Jobs-to-be-done analysis Persona construction Risk factor mapping Competitive positioning sketch Riskiest assumption isolation
Day 2
Find your customer. Launch your test landing page.
AI agents map exactly where your customer lives online. In parallel, we build and publish a test landing page for your specific idea. Both work in your favor for the rest of the week.
AI agents identify the specific subreddits, LinkedIn groups, Discord and Slack communities, niche forums, and Facebook groups where your target customer spends time. We rank the top five to ten channels by signal quality. In parallel, we write, design, and publish your test landing page. One headline, one promise, one call to action. You review the copy and approve it. Once live, it collects passive signal for the rest of the sprint while outreach runs.
Subreddit and group mapping Discord and Slack research Niche forum identification Landing page creation and publish Headline and value-prop drafting Google Trends and SEO demand audit
Day 3
Real outreach. Real posts. Real signal.
Personalised messages go out. Community posts go up. Every response is captured and categorised by strength of intent.
Over 100 personalised cold outreach messages go out across LinkedIn, email, and Twitter/X, sent to a targeted list of real potential customers. Community posts go up in the channels mapped on Day 2, each one written natively for that community's culture and tone. Search demand is audited in parallel: Google Trends, autocomplete patterns, keyword volume. Every response is captured, scored by intent strength, and routed for follow-up.
Personalised cold email LinkedIn cold messaging Reddit post engagement test Community thread starters Twitter/X engagement test Influencer DM interest tests
Day 4
Active monitoring. Optional simple prototype.
Behavioral signals on the landing page are tracked in real time. If your idea genuinely cannot be evaluated from copy alone, we'll build a simple click-through prototype to add the missing context.
Behavioral signals on the landing page are tracked: visits, time on page, scroll depth, form completion, exit intent. Pay button clicks and demo starts are recorded as the strongest passive signals. AI replies to community comments, qualifies high-intent prospects, and flags A-tier responders for human follow-up. For ideas that are visual or interactive enough that strangers cannot evaluate them from copy alone, we build a simple click-through prototype. This is optional and may add one to two days to the timeline. We tell you up front whether your idea needs it.
Heatmap and scroll depth analysis Form completion analysis Exit intent surveys Behavioral signal scoring Optional simple prototype build
Day 5
Conversations with strong responders.
A single fifteen-minute call with the right stranger reveals what a hundred emails cannot. We arrange as many as your idea warrants.
The strongest responders from the week are invited to 15-minute conversations. You can take these calls yourself, with AI-generated question prompts that surface the deepest signal. You can have our trained interviewers run them on your behalf. Or for higher-volume interview needs, we work with research partners who deliver full transcripts and analysis. One genuine call with a stranger who matches your customer profile reveals what a hundred emails cannot. We aim for as many conversations as the signal demands, not a fixed number. Payment intent tests run alongside: pre-order attempts to high-intent prospects.
15-min stranger interviews Founder-led calls (you join) Greenlight-led calls (we run them) Third-party research agencies Full transcripts and analysis Gift-card interview outreach Payment intent and pre-order tests
Day 6
Synthesis and pattern detection.
Every signal is brought together. Patterns emerge. Top objections are clustered. The evidence becomes a picture.
All signals are brought together: outreach responses, community post engagement, landing page behavior, interview transcripts, payment intent attempts. AI aggregates the data and applies weighted scoring based on signal strength. Patterns emerge. Top objections cluster into categories (trust, price, concept, timing). Competitive context is overlaid. The evidence assembles into a clear picture before the final verdict is written.
Signal aggregation and scoring Sentiment analysis Objection clustering Competitive threat assessment Timing and readiness analysis Analogous market comparison
Day 7
The verdict.
Not a maybe. A direction. 🟢 Go for it · 🟡 Adjust it · 🔴 Drop it. With evidence behind it.
You receive a written report: executive summary, evidence per category, top three risks, the verdict, and three to five actionable next steps tailored to your situation. Not a report you'll forget about by Monday. A decision you can act on this weekend. If we cannot deliver a clear signal, you don't pay.
Green / Yellow / Red verdict Full validation report Evidence summary Top 3 risks identified 3 to 5 actionable next steps
From green light to first customers
A small number of Greenlight founders each month are offered a complimentary service we call First10, hands-on help acquiring your first ten customers. We offer it case-by-case, where we think we can genuinely move the needle. It's not part of the sprint, just a nice thing we sometimes do for some of the founders who got a greenlight.
What we believe

We are openly contrarian. On purpose.

The Silicon Valley playbook says build, fail, learn, win. The stories you hear are the ones that ended in success - survivorship bias is the air founders breathe. We say something different.

01
Cheap building is a trap, not a gift. AI lowered the cost of building. It did not lower the cost of building the wrong thing.
02
The market is the only honest judge. Friends are biased. Family is biased. ChatGPT is biased toward agreement.
03
You can validate before you commit. Market signal doesn't require quitting, building, or raising. It requires asking.
04
Real signals beat analyses. A signal is what a stranger does. Clicks, replies, books, pays. Everything else is opinion.
05
Emotional commitment is the most expensive thing a founder owns. Once you're locked in, you can't hear the market when it says no.
06
A clear "no" is worth more than a vague "yes." A red light in week one saves the next six months.
Who Greenlight is for

Different kinds of founders. One avoidable mistake.

Each is about to make a costly, partially irreversible move. Each can avoid it with one week of evidence.

The Idea Holder
You've carried ideas for months, sometimes years, and never tested any of them. Every conversation ends the same way: someone says "you should do it," and nothing happens. You don't want to pick wrong, and you've no way to know which one would actually work.
"You don't have to pick, build, or commit, just one week of real signal, then decide."
First-Time Founder
You have a full-time job. You earn well. You watch peers quit and build and raise, and you have an idea of your own. Your coworkers and partner think it sounds great. AI tools make building feel cheap. You're one weekend away from drafting your resignation.
"The decision you're about to make is worth six figures. Spend one week on evidence first."
Foreign Founder
You're building from outside the US. Cheaper, faster, with talent you trust. You believe your product fits the US market. Maybe you're already planning the flight. But the US market doesn't behave like your home market, and you haven't asked it anything yet.
"Don't move countries before you have a greenlight from the one you're moving to."
Where Greenlight doesn't fit

Honest about what we don't do.

Greenlight works on ideas whose target customers can be reached today: consumer, prosumer, B2B SaaS for individuals and SMBs, services with online demand. Deep tech, regulated industries, and category-creation moonshots are different work.

For the sceptics and the moonshot founders
"We test ideas whose customers exist today. If you're inventing the customer, that's a different bet. Not the one we run."
If you're building for customers who don't yet exist, you're not validating. You're convincing. That's its own work, and you don't need us for it.
The other line we draw: cycle time
"If we can't put your idea in front of the buyer this week, we can't validate it this week. That's the line."
Even when your customer exists today, we can only validate with audiences we can actually reach in a week, consumers, small businesses, solo operators, and other short-cycle customers. We don't currently take on ideas aimed at large enterprises, government, healthcare and public education, utility companies, infrastructure, energy, defense, or other long-procurement buyers. Those buying cycles run in months, not days, and a seven-day sprint can't produce honest signal there. If your customer is one of these organizations, we're not the right fit yet, and we'd rather tell you that upfront than take your money.
The investment

Affordable for everyone. Priced to fit your project.

The Greenlight sprint is designed to be accessible to individual entrepreneurs, not enterprise budgets. Every sprint starts from the same affordable base. The exact figure depends on the depth of your idea, how niche your audience is, and any optional features or integrations you'd like to include. We tell you the number before any commitment. If your sprint passes without a real verdict (green, yellow, or red), you don't pay.

Get Your Greenlight

Two ways to get started.

No commitment required either way. Pick the one that fits where you are right now.

Join the Waitlist
We're onboarding a limited number of founders at this stage. Join the waitlist to be first in line.

Tell us where you are. When your spot comes up, we'll reach out with a couple of short questions and a quote tailored to your idea. No need to share your idea on this page.
Join the Waitlist - It's Free →
Priority access
Want to be near the front? Place a fully refundable $30 deposit to claim a priority spot. It counts toward your validation sprint when your spot comes up - and if you change your mind at any point before then, we refund it in full, no questions asked.

It's not a charge. It's a placeholder you can take back at any time.
Reserve priority spot - $30 →
Your deposit is fully refundable at any time before launch. We hold it separately and never treat it as payment until you've received your validation. We do this so we can prioritise founders who are serious, not to collect money up front.
The waitlist

Be one of the next founders to validate your idea.

We're onboarding a limited number of founders at this stage. Join the waitlist to be first in line.

This tells us how to design your sprint and how to talk to you. You can pick more than one.
I'm employed and considering quitting to start something of my own.
I'm building from outside the US and want to enter the US market.
I've already founded a company before. This time I want to start with evidence.
I've had an idea for a while (or several) and never acted on it.
I've built a product and traction hasn't come the way I hoped.
I've been validating with ChatGPT and want a more honest read.
My close circle says my idea is great, but I want a stranger's verdict.
I keep generating ideas but haven't tested any in the market.
I've pivoted my idea more than once, and I want to stop guessing.
None of the above. I'll tell you more in a follow-up.
This helps us tell you up front if your idea is a fit for the kind of validation we do.
You're on the waitlist. When your spot comes up, we'll reach out with a couple of short questions and a quote tailored to your idea. Nothing else in the meantime.
"Over 20 ideas, 14 companies, 8 startups founded, over 40 years of experience across 6 industries, including AI/ML experience at Apple, Google, and SAP. We moved countries. We went through all of it. We validated them in the end, but only after they had cost us. It cost us money. Worse, it cost us years of our lives. The market is cruel. Don't ignore it. We wish someone had built Greenlight for us. So we built it for the next founder."
Founders, Greenlight AI
Get in touch

Questions, partnerships, or just curious?

Reach out if you're an incubator, accelerator, or VC firm exploring partnership opportunities, or if you just want to say hello. We'd love to hear from you.

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