VibeAudits
Code Audit

Code Audit Services for Vibe-Coded Apps

VibeAudits code audit services give startups a professional security and reliability review of AI-built apps — covering authentication, exposed secrets, database configuration, payment handling, and production readiness — delivered as a prioritized, fix-ready report with a scope and timeline agreed before kickoff.

You hacked together a working product with Cursor, Claude, Copilot, Gemini and friends. Customers are interested, demos are working, but you don't quite trust the auth, billing, or AI bits enough to charge money yet. We come in right at that moment to turn a vibe-coded app into something you can safely put a price tag on.

30-minute intro call where we review your repo, identify risks, and outline a clear path from vibe-coded to production-ready.

What We Actually Do in a Code Audit

This is not a generic scanner report. We pull your repo, run the app, follow real user journeys, and then read the code like a staff engineer who cares about your first 100-1,000 paying customers, not just green test badges. New to this? Start with our guide on how to review vibe-coded apps.

Security & Risk

We treat your vibe-coded app like a real production system: logins, roles, payments, and AI calls are all checked for places where revenue or data could leak.

  • Auth, roles & multi-tenant boundaries
  • Payments, webhooks & subscription logic (Stripe, Paddle, etc.)
  • API keys, secrets & environment configuration
  • Input validation and data sanitisation across forms and APIs
  • SaaS- and AI-specific OWASP-style vulnerability sweep

Reliability & Edge Cases

Most vibe-coded SaaS apps work perfectly in the demo. We break the happy paths on purpose so you don't do it live in front of your first 100 paying customers.

  • Onboarding, invite and password reset flows under stress
  • Billing edge cases: trial expiry, failed payments, downgrades
  • Error handling, retries, and timeouts around external APIs/LLMs
  • Prompt, RAG and tool output guardrails for weird user input
  • Data migrations and background jobs that might quietly fail

Architecture & Performance

We untangle AI-generated spaghetti, dead files, and one-off hacks so you end up with something your future team (or future you) can actually maintain.

  • File, module and feature structure clean‑up for your repo
  • Database query and API performance review (N+1s, missing indexes)
  • Logging, metrics and basic observability recommendations
  • CI/CD and deployment sanity checks (Vercel, Render, Fly, etc.)
  • Best practices so AI tools stop re-breaking the same areas

More Than Just a Code Audit

A code audit is just the beginning. Many projects require a deeper evaluation to ensure scalability, security, and long-term success. That's why we offer additional assessments tailored to different business needs.

Architecture Assessment

Evaluate your system's architecture to identify inefficiencies, scalability limitations, and security risks. Our experts provide actionable recommendations to future-proof your infrastructure.

Technology Audit

Get a comprehensive analysis of your tech stack, including performance, security, and best practices. Ensure your technology choices align with your business goals and industry standards.

Startup Audit

Designed for startups, this audit assesses both your technology and development processes. We help you build a scalable foundation, avoid technical debt, and prepare for future growth.

Questions Your Code Audit Should Answer

  • Does my application really need a rewrite?
  • Can my current application bear the increased load needed for market validation?
  • Does my current application support must-have features?
  • What's the most economical path for my application?
  • Can I build or integrate new features with my existing code?
  • What is needed for the longevity of my application?
  • What is the fastest way to develop an MVP or start a new iteration?
  • What architectural improvements are needed for a maintainable codebase?
  • Which security and reliability issues should I fix before accepting paying customers?

How We Review Your AI-Built App

  • Launch-critical workflows: Identify the login, account, payment, and data-access paths your customers rely on. Review these first so cosmetic improvements do not hide launch-blocking risks.

  • Security boundaries: Trace authentication, roles, tenant isolation, and third-party integrations. Check whether sensitive operations enforce permissions on the server and whether secrets stay out of browser code.

  • Reliability and maintainability: Review error handling, retries, database transactions, and duplicated code. Distinguish targeted fixes from architectural work that needs a separate implementation scope.

  • A practical remediation plan: Prioritize findings by impact, show how to reproduce them, and define what a successful fix should do. Agree on implementation support and retesting before adding them to the engagement.

What an actionable audit finding looks like

A finding should explain the risk, how to reproduce it, and how to verify the fix. This illustrative example shows the format; it is not a finding from a client engagement.

Illustrative finding · High severity

One account can read another account's invoice

Affected flow and impact
An invoice endpoint checks that a user is logged in but does not check who owns the invoice. A second user can read private billing data by changing the invoice ID.
Reproduction
In an authorized test environment, create accounts A and B. Create an invoice as A, then request its endpoint while signed in as B. The vulnerable response returns A's invoice.
Recommended fix
Scope the database query to the authenticated account or tenant on the server. Apply the same ownership checks to read, update, download, and delete routes.
Verification
Confirm B cannot access A's invoice, logged-out requests are rejected, and A can still read it. Add a regression check for cross-account access.

Your agreed scope determines the workflows reviewed. Implementation and retesting can be scoped separately. Read our audit pricing and scope guide or published client case studies.

Checks you can start before your audit

Practical checks for the parts of an AI-built app that handle real users and money.

Vibe-coded app security checklist

Work through 25 checks before accepting real users, payments, and private data.

How to review vibe-coded apps

Plan a review, test the risky flows, and decide when you need a professional audit.

Free vibe code security check

Answer 15 questions to score your app's launch risk and see what to fix first.

Need a second pair of eyes? Explore our code audit services, scope and pricing, and client case studies.

We Speak Your Stack (AI or Not)

Most of our clients run the same pattern: a Next.js / React front end, a Node or Python backend, Postgres or Supabase, Stripe for billing, with a layer of AI (OpenAI, Anthropic, Gemini, custom RAG) sprinkled in on top.

We don't care whether the rough edges came from AI tools or late nights, we help you turn that messy, vibe-coded SaaS into a clean, auditable product that investors, security teams and paying customers can trust.

See what we check for your stack: Lovable, Bolt, Replit, Cursor, Supabase, Next.js, or all platforms. Raising or being acquired? Read about our technical due diligence audits.

Next.js / React SaaSNode / Python APIsStripe / Subscription BillingOpenAI / Anthropic / Gemini

A Clear Picture of What Your Software Can Become

Don't let small issues compound, get a solid read on what you're building on. Your codebase powers your business. It carries you, your stakeholders, and your customers. Whether you need to confirm your product is running cleanly, can handle new features or heavier load, or you want to uncover security gaps before they bite, our code audit gives you the clarity to move ahead with conviction. In our source code reviews, we look at the following areas.

Quality

Bugs get harder to untangle once they calcify into years of workarounds and one-off patches. We give you an honest read on what's actually covered by tests and how to grow that coverage.

Security

Breaches keep climbing and the tolerance for slipping up keeps shrinking. We help you spot the red flags early by stress-testing your flows before anyone malicious gets there first.

Performance

Silent inefficiencies can drag your product and the worst part, your customers, right down with it. Slow response times cost trust, so we surface the weak paths before users feel them.

Maintainability

Your own code and the dependencies you rely on are always shifting underneath you. Written with steady upkeep in mind, even a small refactor won't balloon into a painful rewrite later.

Compliance

When regulations apply to your industry, vibes don't cut it. We verify whether your code genuinely meets the rules you've committed to, rather than assuming it already does.

Scalability

Make sure your software is ready to grow with demand. We help you shore up the soft spots so your product doesn't wobble at the exact moment things finally take off, letting you build a sturdy foundation to grow on.

Project Code Audit Deliverables

After we conduct our code audit, we present clients with a detailed report of our findings, potential code issues, and recommendations. The report includes both critical and non-critical issues as well as expert guidance on managing issues based on our client's priorities. When necessary, we can involve a project manager in the software auditing process so you can receive detailed explanations of individual issues.

Depending on the project requirements, the report can include:

  • Software code analysis
  • Architecture analysis - including strengths and weaknesses
  • Security audit
  • Automation tests audit and pentest review
  • Design review
  • Software audit checklist
  • Document findings from each phase of the assessment
  • Recommendations for improving the assessed quality attributes

How a VibeAudits Code Audit Unfolds

From the first discovery call to a clean, prioritised fix list, here's exactly what to expect when we audit your vibe-coded SaaS.

Step 01

Discovery Call, NDA & Scope

A 30-minute intro call to understand your product, stack and the revenue-critical flows you're most worried about before launch. We sign a mutual NDA up front so you can share freely.

  • Mutual NDA signed before any code or credentials are shared
  • Walk through the app, user journeys and business model
  • Map the stack: framework, DB, auth, payments, AI providers
  • Agree on priorities, what must be solid before charging money

Step 02

Repo & Stack Deep Dive

We pull the repo, run the app locally and read the code like a staff engineer who cares about your first 100-1,000 paying customers.

  • Clone, build and exercise real user journeys end-to-end
  • Trace AI-generated patterns, dead files and one-off hacks
  • Flag architectural soft spots that will bite as you grow

Step 03

Security & Risk Sweep

The part founders lose sleep over: auth boundaries, payments, secrets and AI surfaces are stress-tested against how real attackers behave.

  • Auth, roles and multi-tenant isolation checks
  • Stripe / Paddle webhooks, trial logic and subscription edges
  • API keys, env config and AI/RAG prompt-injection guardrails

Step 04

Reliability & Performance

We break the happy paths on purpose so your first paying customers don't do it live. Database, background jobs and external APIs all get pressure-tested.

  • Onboarding, invite and password-reset flows under stress
  • N+1 queries, missing indexes and slow endpoints
  • Retries, timeouts and failure modes around LLM calls

Step 05

Prioritised Findings Report

A founder-friendly report you can share with investors, PMs or security teams, ranked by impact, not by scanner severity noise.

  • Must-fix-before-launch items with reproduction steps
  • Concrete refactor suggestions your team or AI tools can ship
  • Notes on observability, CI/CD and infra gaps

Step 06

Fix Support & Re-check

Optional hands-on help to ship the fixes, plus a follow-up pass so the same issues don't quietly reappear the next time AI tools touch the repo.

  • Pair on the highest-risk fixes or ship them for you
  • Re-verify the critical findings once patches land
  • Leave behind guardrails so AI doesn't re-break the same areas
FAQ

Code Audit Services: Frequently Asked Questions

Everything founders, indie hackers and SaaS teams ask us before booking a code audit for their vibe-coded, AI-assisted or production SaaS application.

What You Leave With After a VibeAudits Code Review

A clear, prioritised checklist for getting from “this sort of works” to “we feel good charging money for this”. No vague AI noise, just concrete changes that make your app safer, faster and more trustworthy.

A prioritised list of vulnerabilities, leaks and “must-fix before launch” items.
Concrete refactor suggestions your team or AI tools can safely implement.
Recommended guardrails and prompts for safer AI and RAG-powered features.
Notes on performance, database usage, background jobs and infra gaps.
Optional implementation support if you want us to help ship the fixes.
Founder-friendly explanations you can share with investors, PMs or security teams.

Usually we can review a typical startup codebase and share initial findings within 1-2 business days.