Pilot program · limited spots
From idea to launcheverything in one place
You vibe-code your product in minutes. Then you drown in databases, branches, prompts and deploys. Fengo brings database, versioning and prompting into one control room — and deploys safely through git once you've tested and approved. So you can build a company, not manage tools.
Free for pilots · No credit card · Your code stays yours
Connect the tools you already use
Fengo builds on the stack you already know: version control on GitHub, Claude as your AI developer, deploys on Vercel and your database in Supabase — no new platform to learn.
Building is easy. Keeping track is chaos.
AI has made writing code the easiest part of starting a company. Everything around the code is still scattered across ten tabs.
Without Fengo
- Supabase in one tab, GitHub in another, Vercel in a third — and your notes in a fourth.
- Prompts rewritten from scratch every time, with no context about your stack.
- Migrations run on gut feeling — and break in production.
- Build three ideas in parallel, and you lose track of all of them.
With Fengo
- One control room for all your companies: tasks, database, code and deploys.
- Tasks become precise prompts with the right context — or get solved by Fengo Build.
- Migrations run safely and idempotently, straight from the task.
- Your whole portfolio in one pipeline — from idea to launch.
Describe. Build. Test. Launch.
Four steps in plain language the whole way — from idea to a change that's tested, approved and launched safely through git.
- Step 1
Describe
Write what you want, in your own words. Fengo adds the context about your product — repo, database and stack — and turns your description into a precise build prompt.
- Step 2
Build
Fengo Build writes the code and fixes errors while you watch the live progress. An independent AI critic reviews the work and demands fixes until it approves — then you get one tidy change with a plain-English explanation.
- Step 3
Test
Fengo tests it before you do: a real browser opens the preview, logs in with your test users and follows the test guide step by step. You get:
- A verdict on the task — "Tested by Fengo ✓" — with screenshots as evidence.
- Every step checked, including that things are hidden for the right roles.
- A plain-language test guide and ready-made logins if you want to try it yourself.
- Step 4
Launch
Once you've tested and approved, Fengo deploys the change for you. Everything goes through git — safe, traceable and reversible.
- Approve with one click — Fengo merges and deploys automatically.
- Every change is versioned in git, traceable and easy to roll back.
- Nothing goes live until you've approved it first.
New in Fengo
The agent tests its own work — in a real browser
Build → critic review → browser test → you merge. Three quality gates before anything reaches your users, and you don't need to be technical to check any of them.
Tested by Fengo ✓
Before you merge, Fengo opens the change in a real browser, logs in with your test users and follows the test guide step by step — including the "check that this is NOT shown" steps. You get a verdict with screenshots as evidence.
A critic reviews every build
An independent AI critic examines the code before the pull request opens — and sends the agent back to fix things until it approves. Ideas outside the task's scope become 💡 suggestions on your roadmap instead of scope creep.
Try it yourself — zero setup
Every delivery comes with a plain-language test guide, a safe preview link and ready-made test users for the right roles. You always have the final say before anything goes live.
Everything you need. Nothing to set up.
Built for founders who let AI write the code — and want everything around it done right.
A database without a DBA
Supabase tables, migrations and RLS are handled for you. Ask for a change in plain language — Fengo runs the migration safely and idempotently.
Version control you understand
Every change becomes a pull request with a plain-English explanation. See exactly what changed, test it live, and approve with one click.
Prompting, systematized
Fengo turns your tasks into precise build prompts with the right context, attachments and tech stack — so the AI agent nails it on the first try.
Fengo Build — your AI developer
Describe the task, pick a model, and let the agent build — reviewed by an AI critic and tested in a real browser before you merge. You get an email when it's live.
Your whole portfolio. One glance.
Building several ideas in parallel? See progress, tasks and health for all your companies in one pipeline — from idea to launch.
Team and investors on board
Invite co-founders to each company, and give investors a clean view of progress — without yet another status meeting.
How the pilot program works
Four steps from application to building faster than ever.
Apply for a spot
Fill out the form below — it takes 30 seconds. We admit a small group of founders at a time.
Onboarding call
We set up your portfolio together: companies, tech stack, and connections — GitHub is one click with the Fengo Build app, plus Supabase and Vercel.
Build with Fengo
Add tasks like you always do — and let Fengo Build solve them, or copy ready-made prompts into your own tool.
Shape the product
As a pilot, you get a direct line to the team. What you're missing this week could be built the next.
Built together with founders in the pilot
Fengo is developed in a tight loop with the first pilots — feedback goes straight into the product, often the same week.
"I went from five tools and zero overview to one pipeline. The migrations that used to scare me now run with one click."
"Fengo Build solved a task while I was lying on the beach. The email with a finished PR and a test link still feels a little like magic."
"As an angel investor, I finally get progress without nagging. One glance at the pipeline says more than three status meetings."
Frequently asked questions
What does the pilot program cost?
Nothing. Pilots use Fengo for free for the entire pilot period. In return, we hope for honest feedback — that's how the product gets good.
Do I need to know how to code?
No. Fengo is built for people who build with AI tools like Claude Code, Cursor and Lovable. You describe what you want; Fengo handles the technical parts around it — database, versioning and deploys.
How do I know that what gets built actually works?
Three quality gates. First an independent AI critic reviews the code and demands fixes until it approves. Then Fengo tests the change in a real browser — it logs in with your test users, follows the test guide step by step and attaches screenshots as evidence. Finally you can try it yourself in a safe preview. Nothing goes live until you approve.
Can Fengo merge and launch automatically?
If you want. With Vibe mode on, a change that passes both the critic and the browser test is merged and deployed automatically — and a failed test blocks the autopilot. With Vibe off, nothing merges without your click. Either way, you can always override: the human has the final say.
What happens after I approve a change?
Fengo launches it for you. Everything goes through git: the change is merged into your GitHub repo and deployed automatically. Every change is versioned and traceable, can be rolled back — and nothing goes live without your approval.
Which tools does Fengo work with?
Fengo connects to GitHub, Supabase and Vercel — the stack most vibe-coded projects already run on. On a different stack? Mention it in your application and we'll take a look.
Do I still own my code?
Yes, all of it. Your code lives in your GitHub repo, your database in your Supabase project, and your deploys on your Vercel account. Fengo is the control room — not the lock-in.
I'm an investor — is this relevant for me?
Yes. Several pilots use Fengo to give investors a clean view of progress across the portfolio. Register your interest in the form and write "investor" in the company field, and we'll get in touch.
Ready to build your company?
Apply for a spot in the pilot program. It's free, no strings attached, and you'll hear from us as soon as a spot opens up.