Built with Cursor? Deploy it to Fly.io.
Step-by-step deployment help for Cursor-built apps on Fly.io. We fix deployment issues, configure Fly.io correctly, and get your app live in production. From $19.
Cursor issues we fix before deploying
Problems specific to Cursor's code generation that affect Fly.io deployments.
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.
Race conditions in state management
Multiple rapid state updates or concurrent API calls cause stale data, UI flickers, and inconsistent behavior — especially in forms and real-time features.
Fly.io deployment issues we check for
Common Fly.io problems that break AI-generated apps in production.
Dockerfile missing or misconfigured
Fly.io requires a Dockerfile for deployment. AI tools that scaffold without one force flyctl to auto-generate a suboptimal Dockerfile that misses build steps.
Volume only available in a single region
Fly volumes are pinned to one region. Multi-region deployments try to access a volume that doesn't exist in other regions, causing crashes.
Machine restarts losing in-memory state
AI-generated apps store session data or caches in memory. Fly machines can restart or migrate, wiping all in-memory state without warning.
Internal DNS resolution failing between services
Services within a Fly organization communicate via <app>.internal hostnames, but AI-generated code hardcodes localhost or public URLs.
Start with a self-serve audit
Get a professional review of your Cursor project before deploying to Fly.io.
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 deploy a Cursor-built app to Fly.io?
Yes. We regularly deploy Cursor-generated projects to Fly.io. We handle the platform-specific configuration, fix deployment errors, and ensure your app runs reliably in production on Fly.io.
What Fly.io issues do Cursor projects typically have?
Cursor projects commonly have exposed api keys in client code and missing input validation on api routes. When deploying to Fly.io, these combine with platform-specific issues like dockerfile missing or misconfigured and volume only available in a single region.
How do I get my Cursor project live on Fly.io?
Start with our code audit ($19) to get a prioritized list of deployment blockers. For Cursor-built projects targeting Fly.io, the typical path is: fix Cursor-specific code issues, configure Fly.io settings correctly, then deploy. We provide a fixed quote after the audit.
Can you handle the full deployment of my Cursor app to Fly.io?
Yes. We handle end-to-end deployment: auditing your Cursor codebase, fixing deployment blockers, configuring Fly.io correctly, setting up environment variables, and getting your app live in production. Start with our code audit ($19).
Related resources
Deploy Cursor Apps
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Need help deploying your Cursor app to Fly.io?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.