Expert Flask Code Review for AI-Built Apps
Flask is a lightweight Python web framework popular for APIs and prototypes. AI tools generate Flask apps with debug mode enabled, no CSRF protection, and missing production server configuration.
Common Flask issues we find
Real problems from Flask codebases we've reviewed.
Debug mode in production
Flask's built-in debugger left enabled in production, exposing an interactive console that allows remote code execution on the server.
Hardcoded secret key
SECRET_KEY set to a default or short string like 'secret' instead of a cryptographically random value loaded from environment variables.
No CSRF protection
Forms and state-changing endpoints without Flask-WTF CSRF tokens, enabling cross-site request forgery attacks.
Running with flask run in production
Using Flask's development server in production instead of gunicorn or uWSGI, which is single-threaded and not designed for real traffic.
SQL injection in raw queries
String formatting or f-strings used in SQL queries instead of SQLAlchemy's parameterized query interface.
Missing request size limits
No MAX_CONTENT_LENGTH configured, allowing attackers to upload enormous payloads that exhaust server memory.
Flask production checklist
Key checks before deploying your Flask app.
DEBUG=False and debug mode disabled in production
SECRET_KEY is cryptographically random and from environment
CSRF protection enabled on all forms (Flask-WTF)
Production WSGI server (gunicorn/uWSGI) configured
All queries use parameterized statements or ORM
MAX_CONTENT_LENGTH set to reasonable limit
Proper logging configured (not print statements)
Application factory pattern used for testability
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Our Flask services
Security Review
Deep security analysis of your application — from API endpoints to database access.
Deploy & Ship
From local development to production deployment.
Fix Bugs
We diagnose and fix bugs in AI-generated apps — from mysterious crashes to features that just don't work right.
Infrastructure
Databases, APIs, auth systems, email, file storage — the backend services that power your application.
AI tools that generate Flask code
Start with a self-serve audit
Get a professional review of your Flask project 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
Is my AI-generated Flask app secure?
Almost certainly not. AI tools routinely leave debug mode enabled, use weak secret keys, and skip CSRF protection. Flask's debug console alone can give attackers full server access.
Should I use Flask or FastAPI?
FastAPI is better for modern APIs with its automatic docs, type validation, and async support. Flask is simpler for small apps and traditional web pages. We work with both.
How do I deploy a Flask app to production?
We configure gunicorn or uWSGI behind Nginx, set up environment variables, configure logging, and deploy to your platform of choice with proper health checks and monitoring.
Can you add authentication to my Flask app?
Yes. We implement session-based or JWT authentication with Flask-Login or Flask-JWT-Extended, including proper password hashing, CSRF protection, and role-based access control.
Related resources
Need help with your Flask project?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.