Building a saas app with Vercel? Let us review it.
Expert code review for saas apps built with Vercel. We fix Vercel-specific security gaps, optimize performance, and handle deployment. From $19.
Common Vercel issues we find
Real problems from Vercel codebases we've reviewed.
Missing environment variables
Variables set locally but not configured in Vercel, causing runtime crashes in production that didn't happen during development.
No security headers
Missing Content-Security-Policy, X-Frame-Options, and other headers that protect against XSS, clickjacking, and content injection.
Serverless function timeouts
API routes that take too long hit Vercel's timeout limits, causing 504 errors for users.
Cold start latency
Serverless functions have cold start delays that make API responses slow after periods of inactivity.
SaaS App challenges to solve
Key saas app concerns that AI-generated code often misses.
Subscription billing complexity
AI tools generate basic Stripe checkout but miss webhook handling, failed payment recovery, plan upgrades/downgrades, proration, and subscription lifecycle management. Your billing needs to be bulletproof — incorrect charges destroy trust instantly.
Multi-tenant data isolation
Every user's data must be completely isolated. AI-generated code often stores data without proper user scoping, meaning one customer could potentially see another's data. This is a deal-breaker for any business customer.
Authentication and authorization
SaaS needs more than login/signup. You need team management, role-based access control, API key management, SSO for enterprise customers, and secure session handling. AI tools handle basic auth but rarely implement authorization properly.
Uptime and reliability
Paying customers expect your app to work. You need error tracking, monitoring, graceful degradation, database backups, and an incident response plan. AI-generated apps crash ungracefully and have no observability.
What we check
Key areas we review for Vercel saas app projects.
Stripe integration — webhooks, subscription lifecycle, failed payment handling
Data isolation — can one user access another's data?
Authentication flows — signup, login, password reset, session management
Authorization — role-based access, team permissions
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Start with a self-serve audit
Get a professional review of your Vercel saas app project at a fixed price.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Can you review a saas app built with Vercel?
Yes. We regularly audit Vercel saas app projects and understand the specific patterns and pitfalls of this combination. Our review covers security, performance, and deployment readiness.
What issues do you find in Vercel saas apps?
Common issues include missing environment variables and no security headers on the Vercel side, combined with saas app-specific concerns like subscription billing complexity and multi-tenant data isolation. We check for all of these and more.
How do I make my Vercel saas app production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For Vercel saas app projects, the typical path is: fix security gaps, address saas app-specific requirements, optimize Vercel performance, then configure deployment. We provide a fixed quote after the audit.
How long does it take to audit a Vercel saas app?
Our code audit delivers a full report within 24 hours. For Vercel saas app projects, we check security, architecture, performance, and deployment readiness across all Vercel-specific patterns. Fixes are scoped separately with a fixed quote.
Related resources
Vercel by Use Case
Need help with your Vercel saas app?
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