Fix Your AI-Built NextAuth Integration
Flexible authentication library for Next.js applications. AI tools generate v4 patterns when v5 is current, misconfigure providers, and skip database adapters.
Common NextAuth.js issues we find
Problems specific to AI-generated NextAuth.js integrations.
Mixing NextAuth v4 and v5 (Auth.js) patterns
AI tools generate a hybrid of v4 [...nextauth].ts and v5 auth.ts configurations that compile but fail at runtime with cryptic errors.
Session callback not including user ID or role
Generated code uses the default session callback which doesn't include the user's database ID or role, making authorization checks impossible.
JWT strategy used without setting NEXTAUTH_SECRET
AI tools configure JWT sessions but don't set the NEXTAUTH_SECRET environment variable, causing tokens to be signed with an insecure default key.
Database adapter not configured for production
Generated code uses the default in-memory store or an SQLite adapter that loses all sessions on restart, without migrating to a production-ready adapter.
OAuth provider scopes too narrow or too broad
AI tools request either minimal scopes (missing data your app needs) or overly broad scopes (requesting permissions you don't need, causing user distrust).
Start with a self-serve audit
Get a professional review of your NextAuth.js integration at a fixed price.
Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 checks
- SSL/TLS analysis
- Security headers
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerabilities
- Code quality review
- Dependency audit
- AI pattern 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.
Get a clear plan
We respond in 24 hours with scope, timeline, and cost.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Should I use NextAuth v4 or v5 for my new project?
If your AI tool generated [...nextauth].ts inside pages/api, it used v4. The current version (v5/Auth.js) uses auth.ts at the project root with the new auth() helper. We can migrate your AI-generated v4 code to v5 or fix whichever version you're on.
Why can't I access the user ID in my NextAuth session?
The default session object only includes name, email, and image. You need to customize the session and JWT callbacks to pass the user ID (and any other fields) from the token to the session object. AI tools almost always skip this step.
How do I fix 'NEXTAUTH_SECRET missing' errors in production?
NextAuth requires a NEXTAUTH_SECRET environment variable in production for signing tokens. AI tools often only set it in .env.local for development. You need to set it in your hosting platform's environment variables as well.
Related resources
Other Integrations
Need help with your NextAuth.js integration?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.