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I will audit your vibe coded app before you ship
Mai Yanagi
About this gig
You vibe coded something cool. But before you ship is it actually safe?
Senior engineer with 15+ years of experience, most recently at an AI startup. I review AI-generated code the way a senior engineer would, so you can ship with confidence.
LAUNCH SPECIAL: First 5 buyers get 30% off. Message me with "launch special" for a custom offer.
WHAT I CATCH
- Security vulnerabilities (exposed API keys, missing auth, SQL injection)
- Data leaks in API responses
- Broken input validation
- Edge-case bugs
- Architecture and performance issues
WHAT YOU GET
- Written review with file and line references
- Severity ratings (Critical / High / Medium / Low)
- Concrete fix suggestions
- Production-readiness assessment
SUPPORTED Languages: JavaScript, TypeScript, Python Frameworks: Next.js, React, Vue, Express, FastAPI AI tools: Claude Code, Cursor, Replit, Lovable, Bolt, v0, Codex
HOW TO SHARE
GitHub repo (public or private with invite), or ZIP via Fiverr.
"Source files" = code you wrote, not node_modules or builds. Not sure of size? Send me the GitHub link first.
IMPORTANT
Review-only. For implementation, contact me for a quote.
Get to know Mai Yanagi
Mai Yanagi
AI engineer
- FromJapan
- Member sinceApr 2026
Languages
English, Japanese
Hi, I'm a senior engineer based in Japan with 15+ years of experience, most recently at an AI startup working with generative AI.
I help developers and non-engineers ship better vibe-coded apps through chat-based troubleshooting and expert code reviews. Specialized in Claude Code, Cursor, Replit, Lovable, etc.
AI coding tools let almost anyone build software — but many apps launch with hidden bugs or security issues because no experienced engineer reviewed the output. I'm here to be that second pair of eyes.
Timezone: Tokyo (JST)
Feel free to message me before ordering.
FAQ
Why do I need a code review for my AI generated project?
AI tools produce code that works, but not always code that's safe. I regularly find exposed API keys, missing auth checks, and data leaks in vibe-coded apps — issues the AI won't catch on its own. A senior engineer's review helps you ship with confidence instead of hoping nothing breaks.
I'm not an engineer. Can I still order this?
Yes. My reports are written to be understandable without deep engineering knowledge. Each issue includes a clear explanation and concrete fix suggestions you can pass to an AI coding tool or developer.
How do I share my code?
Either a GitHub repo link (public or private with an invite to my account) or a ZIP file uploaded via Fiverr. Both work equally well.
Do you also fix the issues you find?
This service is review-only. I tell you exactly what to fix and how, but I don't implement the fixes myself. If you need implementation help, message me for a custom quote.
What if you find no major issues?
You still get a written report confirming the code is production-ready, with any minor improvements noted. Peace of mind before launching has real value.
How large of a project can you review?
Up to 100 source files in the Premium package. For larger projects, message me with your GitHub link and I'll send a custom offer.
What counts as a "source file"?
Files you've written: .js, .ts, .tsx, .py, .vue, etc. Not node_modules, build outputs, images, or other generated files. For a typical Next.js project, source code lives in /src, /app, /pages, /components, /lib.
How detailed is the report?
Every issue has a severity rating (Critical / High / Medium / Low), specific file and line references, an explanation of why it's an issue, and a concrete fix suggestion.
Can I ask follow-up questions after receiving the report?
Yes. Standard includes 3 days of follow-up Q&A, Premium includes 7 days. You can clarify anything in the report or discuss how to prioritize fixes.
Is my code confidential?
Fiverr's Terms of Service include a confidentiality obligation. I won't share your code or project details. For extra security, you can redact sensitive data like API keys or user information before sharing.
