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Validate / The verdict / ~1 week / Real strangers

Does your solution pull real customers?

One week. Real outreach to real strangers who match your customer profile. It is the only step that returns a verdict: Go for it / Adjust it / Drop it. The AI is the mechanism. The market is the validator.

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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 or with our trained interviewers. 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. Or you can have our trained interviewers run them on your behalf. 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) 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
Day 7

Not a maybe. A direction.

You receive a written report: executive summary, evidence per category, top three risks, the verdict, and three to five actionable next steps. If we cannot deliver a clear signal, you don't pay.

Go for it
The market pulled. Real strangers clicked, replied, booked, paid attention. Build - with the evidence behind you.
Adjust it
A signal worth chasing, but not as-is. The report shows exactly what the market objected to, and what to change before you commit.
Drop it
The honest no. It stings for a week and saves you the next six months. Your capital, energy, and confidence stay intact for the next idea.
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."
We validate with audiences reachable in a week: consumers, small businesses, solo operators. Enterprises, government, healthcare, and other long-procurement buyers run in months, not days - and we'd rather tell you that upfront than take your money.
Beyond validation

Launch: we help you build what you need and land your first real customers.

A green light means the market said yes. It does not make launching easy. For founders whose sprint returned a green verdict, Greenlight offers hands-on help turning that signal into a real business: the prototype or early build, the first real customer conversations, the first close.

Start your sprint

Request market validation of your business idea.

Reach out to start your Market Validation sprint, and our team will get back to you shortly to walk you through the process.

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.
Got it. Our team will reach out shortly to arrange your Market Validation sprint and share a quote tailored to your idea.