A subscription SaaS a stranger can pay for — live, and taking real Stripe payments.
Most "MVP" builds stop at a landing page and a waitlist. We built the real thing: a product with a working checkout, automated delivery, and an AI bot that answers its own support. This is Market Brief — and the exact stack we'd reuse for yours.
"MVP" usually means a demo nobody can pay for
The typical MVP tutorial ends at a signup form and a "coming soon" page. That proves nothing. The one question that actually de-risks a software business — will a stranger pay for this and get value without you in the loop? — goes untested.
The bar we hold "MVP" to is different: a product with a checkout button that works, that delivers automatically, and that doesn't turn the founder into a full-time help desk. Anything short of that is a prototype wearing a product's clothes.
Market Brief — a live subscription product
A markets newsletter at $19/mo. Under the hood it's a full SaaS, live at beforetheopen.co and taking real Stripe payments today:
- Stripe Checkout + Customer Portal — cards, subscriptions, dunning and cancellations, handled by the payment stack your customers already trust.
- Automated email delivery — the daily brief is generated and sent on a schedule, through a transactional provider tuned for deliverability.
- An AI support chatbot — grounded in the product's own docs, it deflects the repetitive "how do I cancel / change my card" questions.
- ?ref attribution — every signup is traced to its source, captured at checkout and stored with the customer.
AI-native development, senior review, payment path first
The speed doesn't come from cutting the parts that make a product real — it comes from AI-accelerated development with a senior engineer reviewing every decision. The order we build in is the edge:
- Ship the payment path first. The riskiest part of any SaaS is "will someone pay?" We wire Stripe before polishing anything. Everything else is downstream of a working checkout.
- Automate delivery from day one. If the founder has to press "send" every morning, it's a job, not a product. The value has to arrive without you.
- Instrument attribution before spending a krone on ads.
?reftracking goes in up front, so paid traffic can be judged honestly — the difference between "we got signups" and "this channel got signups." - Let AI absorb support. Support is the hidden tax on a solo SaaS. A bot grounded in your docs pays for itself in reclaimed hours.
AI writes the volume; the senior call is what gets built, in what order, and what's allowed to ship. That combination is how a full SaaS lands in weeks, not months.
Building the product is not the bottleneck — distribution is. A checkout that works is worthless without traffic hitting it. If we started again, we'd wire the growth loop — attribution, a capture form, a drip sequence — in the same sprint as the product, not after.
A product with a working checkout button — not a demo
Market Brief is in production and taking real payments. A stranger can subscribe, receive the brief automatically every day, get their support questions answered by AI, and every signup is attributed to its source. That's the whole loop, running.
Scope for a SaaS MVP at this shape — auth, Stripe billing, one core delivery loop, and basic support — is a 3–6 week build the way we do it, quoted as a fixed price with a ship date.
Want this exact playbook for your idea?
Stripe billing, automated delivery, AI support, attribution — quoted as a fixed price and shipped in weeks. Tell us your scope and get a quote, usually within a day.