Adding AWS S3 to your Fine.dev app? Let us review it.
Expert review for AWS S3 integrations built with Fine.dev. We fix Fine.dev-generated AWS S3 code for security, error handling & production readiness. From $19.
Common Fine.dev issues affecting integrations
Spec interpretation may differ significantly from intent
Fine.dev builds exactly what the specification says, not what you meant. Ambiguous specs lead to technically correct implementations that miss the actual product requirement.
Cross-file changes may miss security implications
When Fine.dev generates features spanning multiple files, security-sensitive changes — new endpoints, auth checks, data access patterns — are spread across the PR without a consolidated security review surface.
Generated tests may not cover real-world edge cases
Fine.dev writes tests for the happy path and obvious failure cases from the spec. Edge cases not explicitly mentioned — concurrent requests, null inputs, rate limits — are frequently untested.
AWS S3 issues we find in Fine.dev apps
S3 bucket configured with public read/write access
AI-generated code sets the bucket ACL to public-read-write or uses a bucket policy that grants s3:* to everyone, exposing all files and allowing arbitrary uploads.
AWS credentials hardcoded or in client-side code
Generated code includes AWS access key ID and secret access key directly in source files or client-side environment variables instead of using IAM roles or presigned URLs.
File uploads sent through the server instead of presigned URLs
AI tools route all file uploads through your server, creating a bandwidth bottleneck and unnecessary cost, instead of using S3 presigned URLs for direct browser-to-S3 uploads.
Start with a self-serve audit
Get a professional review of your AWS S3 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 Fine.dev-built AWS S3 integration?
Yes. We regularly audit AWS S3 integrations in Fine.dev-built apps. We check for proper error handling, security best practices, and production-ready configuration.
What AWS S3 issues does Fine.dev typically create?
Common issues in Fine.dev-generated AWS S3 code include: s3 bucket configured with public read/write access, aws credentials hardcoded or in client-side code, file uploads sent through the server instead of presigned urls. We fix all of these in our code review.
How much does it cost to fix my AWS S3 integration?
Start with our code audit ($19) to get a complete list of AWS S3 issues. Most integration fixes are included in our Fix & Ship plan ($199). For complex integrations, we provide a custom quote after the audit.
What AWS S3 best practices does Fine.dev 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 AWS S3. Our review checks all of these and provides specific fixes.
Related resources
More Fine.dev Integrations
Need help with AWS S3 in your Fine.dev app?
Tell us about your integration. We'll respond within 24 hours with a clear plan and fixed quote.