The 80% Wall — a field manual for solo builders

It got to eighty percent. Then every change broke something that worked yesterday.

The demo looked done. Production turned out to be a different machine entirely.

It shipped. Nobody came.

Why this one

I’m not writing this from the sidelines. I built Ordani solo — a HIPAA-grade SaaS for birth workers, on Next.js, Supabase, and Vercel, with Claude Code and Cursor. Fourteen practices in private beta. Two outside security reviews. None lost to a competitor at six months. Same stack you’re using. Same wall I hit.

Ten chapters

Why your build broke at 80%What happens in the context window when the AI starts undoing your features. The structural reason, not the vibes.
The spec is the moatThe one-page spec the AI keeps re-reading. Why drift, not bugs, is the thing that kills your build. Template included.
The architecture you didn't drawThe single diagram every solo build needs. Auth, data, storage, edge, third-party — and where AI tools quietly cut corners.
Deploy dayVercel, Supabase, environment variables, SSL, domains, secrets. The pre-flight list, in the order things bite you.
The security pre-flightRLS done right, the auth pattern that survives, and the hardcoded keys you left in. The two checks that catch most of it.
Stripe in productionWebhook reliability, refunds, subscription edge cases, and the test-to-live failures nobody warns you about.
Compliance, when it mattersHIPAA, SOC2, GDPR. When you genuinely need them, when you don't, and what compliant actually requires.
The first ten usersGetting to the first ten people who keep using it. Where they come from. Why posting on Product Hunt stopped working.
The distribution loopTurning the first ten into the next hundred. Reply, don't broadcast. The metric that matters before MRR.
When to hand it offThe signals you've outgrown solo. When to hire, when to fractionalize, when to sell, when to keep going.

Plus an appendix: the prompt patterns that don’t break your codebase — and which model handles which task best.

Read Chapter 1 free

“Why your build broke at 80%” — the real chapter, not a teaser. Leave your email and I’ll send it.

What ships with it

A 70–90 page PDF, plus a companion download — the artifacts, ready to use:

Prompt files for Claude Code and Cursor
A deploy-day pre-flight checklist
A security pre-flight checklist
A Stripe-in-production setup
A distribution-loop template
A sample architecture doc
Three filled-in spec examples

Pricing

$149

One payment. Ten chapters, the companion files, free re-issues. Less than one hour of a $5K-a-month advisory retainer.

Launching soon. The first hundred buyers get it at $99. Get Chapter 1 free now, and I’ll tell you the day it ships.

Questions

Is this for me?: You used Cursor, Claude Code, Lovable, v0, or Bolt to build something real, and it stalled between demo and production. Then yes.
Do I need to know how to code?: You need to read code and run a terminal. You don't need a CS degree. The AI writes; the manual teaches you to steer.
How is this different from a YouTube tutorial?: A tutorial shows one happy path. This is the failure modes — the parts that break after the tutorial ends, from someone who shipped through them.
When does it ship, and is there a refund?: Launching soon. Leave your email for Chapter 1 and the ship date. Thirty-day refund, no questions, once it's for sale.

Past the playbook?

If your build needs a second pair of hands.

The manual covers the solo build. If you’re past it and need someone in the work, the engagement shapes are on the services page.

See the engagements Hiring an operator