Give your AI builder a blueprint. Know what to ask it next.
Describe your app in your own words. We draw up a blueprint Lovable, Claude Code, Cursor or Codex can follow, then Build guidance takes you through it one task at a time.
- 1Describe
- 2
- 3
- 4
Step 1 of 4
A sentence or two is enough.
Free. Usually under 20 seconds. No account needed.
Your AI builder can't read your mind, so it guesses.
Ask an AI tool to “build me a booking app” and it has to invent dozens of answers you never gave it. It picks something quietly and moves on. You find out later, when a booking vanishes or a feature you never wanted appears.
VibeToSpec puts those questions in front of you first, so the answers in your app are yours.
The question nobody asked
What an AI builder guesses
What your blueprint says
Do barbers approve each booking?
What an AI builder guesses
I'll assume they don't.
What your blueprint says
Yes. A booking is a request until the barber approves it.
Two customers want 3pm. Who gets it?
What an AI builder guesses
Whoever clicks first, I suppose.
What your blueprint says
The first request holds the slot while the barber decides.
Should it take payments?
What an AI builder guesses
Let's build a whole online shop.
What your blueprint says
Not in version 1. Customers pay in the shop.
An example for a barber booking app. Dashed lines are guesses; solid lines are decisions you made.
What happens after you click “Scan my idea”
Five stations, in order. You can stop after any of them: scanning, understanding and deciding are free.
- 1
Describe
You · about a minute
Write your idea the way you'd explain it to a friend, or paste the notes you already have. No templates, no jargon.
What do you want to build?
An app where customers book a barber and a time slot, barbers approve each request, plus loyalty points…
- 2
Understand
Us, then you · under 20 seconds to read it
We list what we understood. Lines taken from your words quote them exactly; lines we inferred are marked so you can check them. Fix, remove or add anything.
Barbers approve each booking request.
You said
barbers approve each request
A barber can decline a request.
AI inferred · check it
- 3
Decide
You · a few minutes
See your Build Complexity Score, choose what to leave out of version 1, and answer the questions an AI would otherwise guess. Anything you leave open stays visibly open.
Loyalty points
Needs a points ledger and rules
52→24Build Complexity Score, version 1
- 4
Blueprint
Us · about a minute
Seven documents your AI builder reads before it writes code, plus the Build Review. The preview is free; the full blueprint is $19, one-time.
- PRD.md
- schema.prisma
- tasks.md
- ACCEPTANCE.md
- EDGE_CASES.md
- DECISIONS.md
- AGENTS.md
- Build Review
- 5
Build
You and your AI builder, with Build guidance
Copy one instruction at a time into Lovable, Claude Code, Codex or Cursor. Paste back its reply or error and get the next action, then check the step against your plan before you move on. Your first task comes with the blueprint; Build guidance, $19 a month, covers the rest.
Task 1 of 5
Customers can request a time slot
Your builder says it's done reported
You checked it yourself checked
Specimens show the barber booking example.
What's in the box: your blueprint's parts list
A folder of files you add to your project. Your AI builder reads them before it writes a line of code. You don't have to read them, but everything is in plain English if you want to.
The product plan
PRD.md
What your app does in version 1, its journeys and screens, and just as important, what it doesn't do.
Saves you from: features you never asked for
The data map
schema.prisma or your stack's equivalent
Everything your app keeps, like customers, bookings or payments, and how they connect.
Saves you from: a database that quietly breaks
The build order
tasks.md
A step-by-step list, so your AI builds one thing at a time instead of everything at once.
Saves you from: half-finished everything
The definition of done
ACCEPTANCE.md
Plain-English checks for every feature. Nothing counts as finished until it passes them.
Saves you from: “done” that isn't
The what-ifs
EDGE_CASES.md
What should happen when two customers want the same slot, a payment fails, or someone tries to see another person's data.
Saves you from: bugs your customers find first
Your decisions, on record
DECISIONS.md
Every choice you made, marked as yours, and every question still open. Your AI treats your decisions as rules.
Saves you from: your idea being quietly rewritten
The rulebook
AGENTS.md with CLAUDE.md and Copilot instructions
Tells any AI builder how to work on your project: what's decided, what's off-limits, and when a task is truly done.
Saves you from: an AI that improvises
The Build Review
runs on GitHub
An automatic check each time your AI builder saves a change: does the work still match your blueprint and your decisions?
Saves you from: trusting your AI blindly
For a fictional product. No sign-up needed.
You don't have to read code to know when it drifts.
Each time your AI builder saves a change on GitHub, the Build Review runs your project's own checks and compares the work with your blueprint. You get a plain-English verdict: passed, or what went wrong and where.
- Features you left out, creeping back in
- New kinds of data your blueprint never approved
- Changes to your plan or your decisions
- Security shortcuts, like trusting the browser about who's signed in
- Failing tests and broken builds
It's included in every blueprint. It catches drift from your plan; it doesn't prove your app works. Checking that it does what you need is still yours to do.
Build Review · change 24
1 blocked · 2 to review
- Passed
Type check: passed
- Passed
Tests: passed
- Blocked
Scope: Builds “Loyalty points”, which you left out of version 1.
In plain words: Your AI started a feature you said no to.
- Review
Data: Adds an Invoice table that isn't in your data map.
In plain words: It started storing a new kind of data without asking.
- Review
Security: saveProfile() trusts the userId sent by the browser.
In plain words: Someone could act as another customer.
- Passed
Your decisions: unchanged
We pointed the Build Review at an early version of VibeToSpec's own code. It flagged the same eight functions behind a paywall bypass that our security audit had found.
Start with a blueprint. Keep building with guidance.
Scanning is free. Your blueprint is $19 once, complete on its own and yours to keep. When you start building, Build guidance is $19 a month and renews until you cancel.
Free
Get your idea straight.
$0
- Scan as many ideas as you like
- What we understood, for you to correct
- Build Complexity Score, explained
- What to leave out of version 1
- A preview of your blueprint
Blueprint
Start hereEverything your AI builder needs for one idea.
$19one-time, per blueprint
- 7 documents: plan, data, build order, AI rules, done-checks, edge cases, decisions
- Build Review on every change to your code
- Start building in Lovable, Claude Code, Codex or Cursor
- Your first workflow planned, with its first task
- Yours to keep: no account or subscription needed
Build guidance
When you buildFor building it, one task at a time.
$19a month, renews until you cancel
- The next instruction for every task, written from your blueprint
- 50 result reviews each billing period: paste your builder's reply or error, get what it means and one next action
- 3 workflow plans each billing period, for a new or updated workflow
- Your decisions, tasks and progress in one place, with workflow checks and a report
- Added from your blueprint when you start building. Buying a blueprint never starts it
Pay in one tap with Apple Pay, Google Pay or Link. No account needed: your blueprint is emailed to you the moment you pay.
14-day money-back guarantee if your blueprint doesn't keep your AI on track (for the one-time blueprint). Refund policy
About Build guidance
- $19 a month, charged monthly until you cancel. Cancel any time from your guided build; it runs to the end of the period you paid.
- Only reviews and plans we deliver count. If something fails on our side, it uses nothing.
- Cancelling never touches your blueprints: they stay yours.
- Not included: new blueprints, blueprint rewrites, or unlimited AI use.
Questions founders ask first
Something missing? support@vibetospec.com reaches a person.
Bring the messy version. We'll draw it up together.
Paste your idea as it is today. In under a minute you'll see what we understood and the decisions worth making before any code is written.
Free · no account needed