Fintech Rescue & Feature Build
Took over a broken AI-generated codebase, fixed auth and payments, then built out the product: dispute letter generator, grant writer and admin dashboard.
Client
Industry
Fintech, credit repair
Engagement
Vibe-code rescue & bug fix → ongoing feature work
URL
01
Overview
The platform is a credit repair app: AI-generated credit dispute letters, a grant writer and an admin dashboard. The client arrived with a v0-generated codebase they could not get working, broken login, broken payments, and damage from their own AI-assisted fix attempts layered on top.
02
The Challenge
AI-generated codebases look complete but fail in production. Login/auth was broken, the PayPal integration didn't work, and each fix attempt had introduced new breakage. The client needed someone to diagnose the real state of the code and make it shippable.
03
What We Did
- Diagnosed the codebase: mapped what actually worked vs. what only looked finished
- Fixed auth: repaired the broken login and authentication flow end to end
- Fixed payments: resolved the PayPal integration issues
- Cleaned up collateral damage: reverted and repaired the client's AI-assisted fix attempts
- Built the product out: dispute letter generator (OpenAI + PDF.co), grant writer, admin dashboard
04
Technical Highlights
- Rescue methodology: audit-first approach to an untrusted AI-generated codebase before changing anything
- Payment-flow debugging on live PayPal integration
- AI document generation pipeline (dispute letters, grants) with PDF output
05
Results
- App went from non-functional to working product with paying users able to log in and pay
- Rescue engagement converted into ongoing feature work, client kept building with us
06
Stack
- Next.js
- Vercel
- Supabase
- OpenAI
- PayPal
- PDF.co
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