Know what you built
before you raise or sell.
You built fast. Do you know what you built?Paste your GitHub URL. Free scan, under 3 minutes. Every finding tied to a file and line you can open yourself.
No signup requiredResults in ~3 minHow we handle your data
What Comes Back
Every finding carries its severity, the exact file and line, and what it means in one sentence. Critical and high findings show their location free, without signing up.
Illustrative example. The format every report uses, with a composed project.
- Criticalsrc/lib/db.ts:14
const DATABASE_URL = "postgres://admin:••••••••@db..."Your database password is written into the code.
- Critical.env.production:3
STRIPE_SECRET_KEY=sk_live_••••••••A live payment key is committed to the repository.
- Highsrc/app/api/upload/route.ts:22
const data = req.body; // no validationUploads are accepted without checking what they contain.
Technical Findings. Business Language.
Every issue comes with a plain-English explanation: what it means, what it costs, and what to do about it.
localStorage.setItem(STORAGE_KEYS.messages, JSON.stringify(allMessages))“It's just caching, it's fine.”
Customer data stored unprotected on devices
Chat conversations are saved in the browser without encryption. If a device is compromised, business discussions could be exposed.
Someone Is About to Look at Your Code
An investor, an acquirer, or the engineers you hire next. See what they'll see first.
Before You Raise
Investors ask about your tech. Walk in already knowing what they'll find: exposed keys, missing tests, and whether the product depends on one person.
Before You Sell or Buy
Selling a product, or buying one? See what the code actually holds before the other side's engineers do.
Before You Scale or Hire
Inherited a codebase, or about to hand one to new engineers? Know what's solid, what's fragile, and what to fix first.
Also written for non-technical founders, vibe coders and agencies. Need a report with a person's name on it? Technical due diligence review.
See It In Action
Every panel below is the real report UI: a system map, risk scan, and fix plan that anyone on your team can understand.
Report ready
Analysed 80 of 214 files · 12 components · 47s
An example report, in the format every scan produces. The panels are the real product; the repository is composed.
What founders are saying
Real feedback from early users. Names and companies changed at their request.
“Investor asked for a tech due diligence report. Didn't have one. Ran this 20 minutes before the call. At least I had something to show.”
James L.
Founder · Pre-seed fintech
“Took over a codebase from a dev agency. No docs, no tests, no nothing. This thing at least told me what I was dealing with. Worth it just for that.”
Dan R.
New CTO
Your Code Stays Yours
Enterprise-grade security. Zero compromises.
We Only Read
Public repos are read with a token that cannot change anything. Private repos are read through our GitHub App, which has read-only access to only the repositories you choose.
Zero Storage
Your code is analyzed in real-time and never saved. Nothing persists after the scan.
No AI Training
Your code is never used to train AI models. Analysis is private to you.
Secure Payment
Stripe-powered checkout. 14-day money-back guarantee — full refund if you're not satisfied, no reason needed.
Scores You Can Trust
Dangerous systems can't look healthy. If your code has exposed secrets or critical failures, the score drops — no exceptions. The number always matches what we actually found.
What You Get
Paste a GitHub URL. The first two arrive in under 3 minutes without paying.
Free, from the first scan
Security Scan
FreeExposed secrets, .env files, hardcoded credentials and vulnerabilities, each with the exact file and line, and a plain-English explanation of what it means.
“Find what's exposed before attackers do”
Architecture Map
Free · your emailVisual system diagram showing how all parts connect. Understand your codebase without reading a single line.
“See your system at a glance”
Added when you upgrade
AI Readiness Grade
ProLetter grade (A-F) across five dimensions: code clarity, test coverage, modularity, documentation, type safety. Each with evidence from your code and what it would take to move it — a 42 today and an 85 possible.
“Know if AI tools can safely modify your code”
Business Translation
ProCost-to-fix and cost-if-ignored for every issue. ROI projections. Investor-ready PDF export.
“Turn technical debt into budget decisions”
Developer Brief
ProA copy-pasteable summary with your top five fixes, stack context and effort estimates. Send it to any developer and they can start without a handover meeting.
“Delegate without translating”
What's Hiding In Your Code?
of private repositories contain at least one plaintext secret
of the programs GitHub Copilot generated in security-relevant scenarios were vulnerable
The only thing worse than having these problems is not knowing about them.
Do You Need a Consultant, or a First Pass?
Traditional audits often run weeks and five figures. That is the right call for some systems and a waste for most. Find out which one you have before you book one.
Need a person to check it and sign their name to it for an investor or acquirer? Request a technical due diligence review, from $1,500.
Choose Your Plan.
Know What You Built.
Each step answers a bigger question. Start free, and pay only for the answer you need.
Free Scan
Is there a problem?
Public repositories only
Security & Secrets Scan
Detect exposed API keys, .env files, credentials
Architecture Map
Visual diagram of your system components — free with your email
Handoff & Supply Chain Grades
Letter grades for how ready your code is to hand over, and how exposed your dependencies are
Critical Issues With Exact Locations
File, line and redacted snippet — no signup needed
Dependency Analysis
Check for vulnerable packages
Quick Audit
What are the biggest problems?
Projects up to 150K lines
Everything in Free
All scanning and detection features
Your Top 5 Risks, Ranked
From the AI analysis, each checked against your source
Fix Now, and Before You Raise or Sell
The two most urgent groups of the fix-first plan, in full
Who Holds the Knowledge
Area-by-area view of whether one person holds each part of the code
Full Audit
What exactly should I fix?
Price based on your project size
Everything in Quick Audit
Plus every finding, not just the top five
Private Repository Support
Analyze private GitHub repos securely
All Risks Unlocked
Every issue with cost-to-fix estimates
PDF Export
Shareable report for investors or devs
Developer Brief
Copy-paste summary to hand off to any dev
The Whole Fix-First Plan
Before enterprise sales, before hiring, and what can wait
Fix Prompts for Cursor or Lovable
Copy a ready-made prompt for each finding and paste it into your AI editor
Re-scans Show What You Fixed
Re-scan a repo you've paid for and see what was resolved and what is new
Your price = your project size
We measure lines of code after you scan. No surprises.
Built with Cursor, v0, or Bolt? Most AI-generated projects are under 30K lines — you'll likely pay $49.
Technical due diligence
I need professional-level certainty
For a raise, a sale or an acquisition: the Full Audit reviewed and signed by Nic Chin, who built SystemAudit.dev, with a walkthrough call. From $1,500, scope confirmed before anything is charged.
Request a reviewMonitoring · coming soon
Keep watching it
A re-scan every day, and an email the moment a new critical problem appears, like a live key pushed by a contractor. Join the waitlist to hear when it opens.
Over 150K lines of code? Contact us for custom pricing.
Auditing several repositories? A multi-repo subscription is $29 a month and covers every repo you scan, at the same per-repo depth as the size tiers.
See full pricing details and what each tier includes →Frequently Asked Questions
You'll get a complete picture of your software system: how it's structured, what's working well, what's risky, and what needs fixing. Every issue comes with cost-to-fix and cost-if-ignored estimates. Think of it like a health checkup for your product. You'll walk away knowing exactly where you stand, what it costs, and what to do next.
Yes. The report is designed for decision-makers, not developers. You'll see a visual map of your system, risks ranked from urgent to minor, and a plain-English action plan. No jargon, just clarity on what matters.
Your code is completely safe. SystemAudit.dev reads your code through GitHub's official API, analyzes it in real-time, and never stores it. Nothing is saved, shared, or used to train AI. Only you see the results.
Under 3 minutes for most projects. You paste a link, the AI reads your entire system, and you get a full report. No scheduling consultants, no waiting weeks for results.
Yes. The free scan works with public repositories. Any paid tier — Small at $49, Medium at $99, or Large at $199 — supports private repositories. You connect your GitHub account securely and we analyze your system without ever storing your code.
We provide deep, framework-aware analysis for 9+ ecosystems: JavaScript/TypeScript (Next.js, Express, React), Python (Django, FastAPI, Flask), Java (Spring Boot, Maven, Gradle), Go (Gin, Echo, Chi), Rust (Actix, Axum, Cargo), C#/.NET (ASP.NET Core, NuGet), PHP (Laravel, Composer), and Ruby (Rails, Bundler). We parse dependencies, detect architecture patterns, and extract features for each framework. Beyond these, our AI analysis reads any language. The LLM understands code regardless of syntax.
Your system gets a letter grade from A to F, based on 5 dimensions: code clarity, test coverage, modularity, documentation, and type safety. Each dimension comes with specific evidence from your codebase, a plain-English explanation of what it means for your team, and a concrete action to improve it, including effort estimates. You also get an improvement trajectory showing how your score changes as you fix issues week by week, so you can track real progress.
No. The score is based on security and infrastructure checks weighted by severity. Critical findings immediately limit the maximum score, so a dangerous system cannot appear healthy. Every score is tied to the actual issues found — you can look at the risk list and see exactly why the number is what it is.
Every finding is checked against your actual source code. SystemAudit reads your real files, and any issue the AI cannot tie to a specific file and line is automatically downgraded or dropped before you see it — so you get problems we can point to, not invented ones. The scanner engine is open source, so you can read exactly how it works.
Traditional code audits often run weeks and five figures. SystemAudit.dev is not a replacement for one: it does not do penetration testing, and it cannot judge whether your architecture suits where the product is going. What it does in under 3 minutes is tell you what you have, what is exposed and what to fix first, which is usually enough to decide whether a consultant engagement is worth booking. If you need a person to review the findings and sign the report for an investor or acquirer, the technical due diligence review starts at $1,500.
Yes. Paid plans include a Developer Brief: a plain-text summary with your top 5 priority fixes, tech stack context, and effort estimates. Copy it, paste it into Slack or email, and your developer or freelancer can start immediately. No context-setting meeting needed.
Every paid tier includes the same report: private repo support, all risks with cost-to-fix estimates, feature verification, the AI Readiness Decision Brief, business translation, a prioritized fix plan, the Developer Brief, PDF export, and re-scans of a repo you've paid for. Price is set by project size, because size sets how much there is to read — $49 covers up to 30K lines, $99 up to 75K, and $199 up to 150K. Size also sets how many files are read: the free scan reads 40, 80 or 150, and the paid analysis reads 80, 160 or 240, with multi-pass AI analysis over them checked against your source, plus everything listed above. We measure your lines of code during the free scan and show you your price before you pay. Above 150K lines, contact us for a custom enterprise plan.
Your system has a grade.
You just don't know it yet.
Paste your GitHub URL. Find out in under 3 minutes. Free for public repos. Quick Audit $19, Full Audit $49 to $199.

