rebar/Book a call

// for founders with real users on an AI-built app

Your AI built the app.I make it survive real users.

I make apps built with Lovable, Bolt, Cursor, Replit or Bubble production-ready: secure, fast when users show up, payments that work, backups you can restore. Fixed price. You keep your app and keep building with AI.

Book a free teardownsee what breaks first ↓

20 min · live on your app · no code access needed

rebar audit · example output

$ rebar scan your-app.com

checking 14 tables · 38 routes · 1 client bundle · stripe · auth

CRIT

✕ rls off on "users", "orders", "invoices"

Anyone signed in can read everyone’s data.

CRIT

✕ sk-proj-•••• found in main.js

Your OpenAI key is public.

HIGH

✕ stripe webhook: signature not checked

A fake “paid” event unlocks accounts.

HIGH

✕ orders query: no index · loads 48k rows

Every new user makes it slower.

MED

✕ no backups since launch

One bad prompt could wipe it all.

MED

✕ no error monitoring

You hear about bugs from customers.

2 critical · 2 high · 2 medium

exposure: all user data

[01] what happens next

Nobody tells you. Someone finds out.

  1. SEV-109:02· data access

    Every customer can see every other customer’s orders.

    rls disabled · table "orders" readable by any signed-in user

  2. SEV-111:40· performance

    You finally went viral. Visitors saw an error page.

    traffic ×40 · db connections 60/60 · p95 12.4s · 503

  3. SEV-113:47· secrets

    Someone copied your key. The bill is $3,112 and climbing.

    OPENAI_API_KEY found in client bundle (main.js)

  4. SEV-218:20· payments

    A customer paid. They still can’t get in.

    stripe webhook retried ×3 · access granted ×0

  5. SEV-123:05· auth

    You changed the dashboard. Login broke.

    deploy #214 · auth: session invalid for 100% of users

  6. SEV-202:31· backups

    If the database goes, the company goes with it.

    backups: none since launch

you › fix the login bug

ai › Fixed! Login works now ✨

✕ it doesn’t. and checkout broke.

you › fix the login bug

you › fix the login bug

you › fix the login bug

credits burned this month

$1,125

“I started keeping a list. The list had a list.”

a founder on r/lovable, 2am
from: security@your-first-big-customer.comthu 4:51 pm

Before we sign: security review

Please complete the attached questionnaire and describe how you handle access control, secrets, backups and incident response.

📎 vendor-security-questionnaire.xlsx

You have 5 days.

[02] the fix

Rebar makes AI‑built apps production‑ready.

AI poured the concrete. Rebar is the steel inside. Same app, same stack, same features. It just holds now, when real users, real traffic, real money and real security reviews show up.

Book a free teardown

after

Same app. Different ending.

You don’t need to read the code. Each fix comes with a sentence you can repeat to an investor.

Your data was open. Now each user sees only their own.
supabase/migrations/0042_rls.sql+3 −1
-alter table orders disable row level security;
+alter table orders enable row level security;
+create policy "own orders" on orders
+ for select using (auth.uid() = user_id);
Your API key was in the browser. Now it lives on the server.
src/lib/ai.ts+3 −1
-const ai = new OpenAI({ apiKey: "sk-proj-…" })
+import 'server-only'
+const ai = new OpenAI({
+ apiKey: process.env.OPENAI_API_KEY })
Anyone could fake a payment. Now Stripe has to sign it.
api/stripe/webhook.ts+3 −1
-const event = JSON.parse(body)
+const event = stripe.webhooks.constructEvent(
+ body, signature, env.STRIPE_WEBHOOK_SECRET)
+if (await seen(event.id)) return ok()
Your dashboard loaded every order ever. Now it loads 50, fast.
app/dashboard/orders.ts+3 −1
-db.from('orders').select('*')
+db.from('orders').select('id, total, status')
+ .order('created_at', { ascending: false })
+ .range(0, 49) // + index on (user_id, created_at)
rebar / production-readiness · run #142what you get at handover
  • ✓data accessrow-level security on every table1.2s
  • ✓secretsno keys in the browser bundle0.4s
  • ✓paymentswebhooks signed and never double-counted0.9s
  • ✓authsignup, login and reset tested2.1s
  • ✓backupsnightly, restore verified3.4s
  • ✓performanceload-tested at 10x your current users4.8s
  • ✓costsAI and database spend capped0.5s
  • ✓monitoringerrors alert you before users do0.3s
  • ✓abuserate limits and bot protection0.6s
  • ✓guardrailsstaging, pre-deploy checks, AI rules file0.8s
all checks passed · safe to launch

how it works

Keep what you built. I fix what’s underneath.

  1. 01 · Day 0

    Free teardown call

    20 minutes. We open your app together and I show you the top 3 things most likely to break, leak or lose you money.

  2. 02 · Days 1 to 3

    Production audit

    I read what the AI wrote. Every table, key and payment path. You get a ranked list, a Loom walkthrough of your own app and a fixed quote.

  3. 03 · Weeks 1 to 2

    Production sprint

    I fix what’s underneath. Your features stay exactly where they are. Every change lands on your GitHub.

  4. 04 · Handover

    You keep building with AI

    A staging copy, checks that run before every deploy, and a rules file for Lovable or Cursor so the next prompt can’t quietly undo the work.

→ you keep

Code on your GitHub

You own every line. Nothing held back.

→ you keep

A security summary

Something real to send when a customer or investor asks.

→ you keep

Alerts that reach you first

You hear about problems before your users do.

→ you keep

Freedom to keep prompting

Guardrails so AI changes can’t quietly break production.

[03] pricing

Fixed prices. Agreed before I start.

Production Audit

$950

one-time

Fully credited if you go ahead within 14 days.

  • ✓3 business days
  • ✓Ranked list of launch blockers
  • ✓Loom walkthrough of your app
  • ✓Fixed quote for the fix
Start with a free call

Production Sprint

most chosen

$4,500

from · fixed price

2 weeks. Where most founders land.

  • ✓Data access rules locked down
  • ✓Keys moved server-side and rotated
  • ✓Payments and webhooks verified
  • ✓Auth tested on every deploy
  • ✓Slow pages fixed, load-tested at 10x your users
  • ✓AI and database costs capped
  • ✓Backups, monitoring, error alerts
  • ✓Guardrails so you keep shipping with AI
  • ✓A security summary you can send to buyers and investors
Start with a free call

Move to real code

$9,000

from · by milestone

3 to 6 weeks. For when the platform itself is the limit.

  • ✓Off Lovable Cloud, Bolt, Replit or Bubble
  • ✓Built to handle 100x your users without surprise bills
  • ✓Onto Next.js with your own Supabase or Postgres
  • ✓Same features, same URLs, your GitHub
Start with a free call

NDA first

Signed before I see a single line of code.

Read-only first

Least access possible. No production secrets over chat.

Fixed price

Agreed before I start. If it runs long, that’s on me.

Honest answer

If your app is fine, I’ll tell you. If a rewrite is needed, I’ll tell you why.

If the audit finds fewer than 3 launch blockers, it’s free. Selling in Europe or the UAE? I add the GDPR or PDPL basics: data residency, deletion and export, breach alerts.

[04] faq

Straight answers.

$How much does it cost to make a Lovable, Bolt or Cursor app production-ready?+

It starts with a free 20-minute teardown call. The Production Audit is $950, delivered in 3 business days and fully credited if you go ahead within 14 days. Most apps are then fixed in a 2-week Production Sprint from $4,500 at a fixed price. Moving off Lovable Cloud, Bolt, Replit or Bubble to your own code starts at $9,000.

$Will my app handle more users?+

That is part of every Production Sprint. I fix the slow database queries, add indexes, pagination and caching, cap runaway AI and database costs, and load-test the app at 10 times your current users before handover. If the platform itself is the limit, for example Bubble workload costs or a database design that cannot grow, the answer is a move to real code.

$Will you rewrite my app?+

No. I keep your app, your stack and your features, and fix what is underneath: data access rules, auth, secrets, payments, backups and deploys. If part of it cannot be saved, I tell you which part and why before you spend anything.

$Can I keep building with Lovable or Cursor afterwards?+

Yes. You get a staging copy, checks that run before every deploy, and a rules file for your AI tool, so new prompts cannot quietly break production.

$Which tools and stacks do you work with?+

Apps built with Lovable, Bolt.new, Cursor, Replit, v0, Bubble and Base44, usually running on Supabase, Firebase, Stripe, Vercel or Netlify.

$Is my code and customer data safe with you?+

I sign an NDA before seeing any code, start with read-only access, never ask for production secrets over chat, and commit everything to your own GitHub.

$How long does it take?+

The audit takes 3 business days. A Production Sprint takes 2 weeks. A move to real code takes 3 to 6 weeks.

$Do you work with founders outside the US?+

Yes. Most clients are in the US, and I also work with founders in Europe and the UAE, adding GDPR or UAE PDPL basics such as data residency, deletion and export, and breach alerts when needed.

Akshit Ahuja, founder of Rebar

who reads your code

Hi, I’m Akshit. You talk to me.

I’m a senior engineer. Previously an engineer at a $1B+ startup, and I’ve helped companies save thousands of dollars on engineering and infrastructure.

Now I do one thing: take apps founders built with AI and make them safe for real users, real money and real security reviews. No account managers, no junior handoff. I read your code myself.

ROLE
senior engineer, founder
FOCUS
AI-built apps → production
STACK
supabase · postgres · stripe · next.js
CLIENTS
founders in the US, Europe and the UAE
→ linkedin.com/in/akshit-ahuja

$ book --with akshit

20 minutes. Your top 3 risks, ranked.

We open your app together, live, and check the 6 places AI-built apps break first:

  1. 01

    Who can see what

    Can one user read another user’s data?

  2. 02

    Exposed keys

    Are your API keys sitting in the browser for anyone to copy?

  3. 03

    Payments

    Does every Stripe payment actually unlock access?

  4. 04

    Login

    Does one change break sign-in?

  5. 05

    Launch day

    Will it stay up when 1,000 people show up at once?

  6. 06

    Backups

    If the database goes down tonight, what do you lose?

you leave with

  • Your top 3 risks, ranked, in plain English
  • What you can fix yourself this week
  • An honest answer on whether you need help, and a fixed price if you do

No pitch deck. No “you need a full rewrite.” If your app is solid, I’ll tell you.

Book a free teardown
Book a free teardown