Adding Firebase Auth to your Cursor app? Let us review it.
Expert review for Firebase Auth integrations built with Cursor. We fix Cursor-generated Firebase Auth code for security, error handling & production readiness. From $19.
Common Cursor issues affecting integrations
Exposed API keys in client code
Cursor often places sensitive keys and secrets directly in client-side components or .env files without the NEXT_PUBLIC prefix distinction, making them accessible in the browser.
Missing input validation on API routes
Server actions and API routes generated by Cursor frequently accept user input without sanitization or schema validation, opening the door to injection attacks.
Unhandled async errors
Cursor wraps code in try/catch inconsistently. Failed API calls, database queries, and file operations often crash the app silently or show raw error messages to users.
Firebase Auth issues we find in Cursor apps
No server-side token verification
AI-generated code checks auth state only on the client using onAuthStateChanged but never verifies the Firebase ID token on the server, allowing forged requests.
Firebase config exposed without App Check
Generated code includes the full Firebase config in client-side code without enabling App Check, allowing anyone to use your Firebase project resources.
Firestore security rules left as test mode defaults
AI tools leave Firestore rules in test mode (allow read, write: if true) or generate rules that don't properly check auth.uid against document ownership.
Start with a self-serve audit
Get a professional review of your Firebase Auth integration 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 my Cursor-built Firebase Auth integration?
Yes. We regularly audit Firebase Auth integrations in Cursor-built apps. We check for proper error handling, security best practices, and production-ready configuration.
What Firebase Auth issues does Cursor typically create?
Common issues in Cursor-generated Firebase Auth code include: no server-side token verification, firebase config exposed without app check, firestore security rules left as test mode defaults. We fix all of these in our code review.
How much does it cost to fix my Firebase Auth integration?
Start with our code audit ($19) to get a complete list of Firebase Auth issues. Most integration fixes are included in our Fix & Ship plan ($199). For complex integrations, we provide a custom quote after the audit.
What Firebase Auth best practices does Cursor typically miss?
AI tools often skip webhook signature verification, proper error handling for API failures, retry logic with exponential backoff, and secure token storage for Firebase Auth. Our review checks all of these and provides specific fixes.
Related resources
More Cursor Integrations
Need help with Firebase Auth in your Cursor app?
Tell us about your integration. We'll respond within 24 hours with a clear plan and fixed quote.