Find security gaps in your vibe-coded app.

Test a deployed URL or review a code repository. Get evidence, fix guidance and clear coverage limits for each view.

What would you like to check?
Free live-app preview · No card required

Your first live-app preview includes the available score, issue counts and one finding in detail when available. No card required.

Unlock available detailed findings and remediation guidance from $29/month.

Source code: try one free code repository preview per verified account, with one finding visible when available. Remaining findings, exports and repeat scans require an eligible plan.

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Human support from Jacob (opens in a new tab)

For your app stack and workflow

Lovable
Replit
Base44
Claude
Cursor
Windsurf
v0
Bolt.new
Copilot
Supabase
Firebase
Vercel
Cloudflare
Render
Stripe
n8n
n8n approved · Available on Cloud.

Check what shipped and what is in the code

Two complementary views: test a live-app URL, or review source from GitHub or a ZIP. Neither replaces the other.

Live app

Website URL

Check reachable pages, browser scripts and endpoints in a deployed app.

A URL scan does not read your private repository or prove every user-role permission.

View the live-app sample report

Source code

GitHub repository or source ZIP

Review supported source files, dependencies and configuration in a selected snapshot.

Source findings do not prove the same code is deployed or that an issue is exploitable in the live app.

View the fictional code sample report

Automated checks have coverage limits. No findings is not proof of security, and no longer detected is not a confirmed fix.

A finding is the start. VAS gives you evidence and a next step. Bring the report to your coding tool, review the change and test the result.

0+

Available checks

Across security, SEO, AI search readiness, performance and more. Your report records which checks ran and any coverage limits.

$0

For your first live-app preview

Available score, counts and one finding in detail when available. No card required. One code repository preview is also available per verified account, with remaining findings and repeat scans requiring a plan.

~0 min

To your first report

Paste a URL, get a scored report with ranked findings while your coffee is still hot.

The product

Find it. Understand it.
Review the fix. Verify again.

01

Start with the evidence

See the affected endpoint, what the scanner observed and why it matters. Here is an example of how to work through a data-access finding.

demo.exampleIllustrative example
HIGHPrivate profile returned without a login

Only the profile owner should be able to read this email.

[{"id":"demo-001","email":"person@example.com"}]

A request using a public client key and no user session returned a profile row. The returned data, not the 200 status alone, is the evidence.

Illustrative example with fictional data, not a customer scan.

02

Bring the finding to your coding tool

Choose Export for AI in your report. Give your tool the evidence and intended permissions, then review its proposed change and tests.

Example review request

Review this finding against my app. Check table grants, RLS and existing policies. Propose a change that preserves owner access and blocks other readers. Add tests with disposable data. Show the diff before applying it.

You approve the change. VAS does not apply it.
03

Verify the deployed change

Rescan after deployment and repeat permission tests. For this example, check all three access paths below. On Pro, weekly monitoring can notify you about changes found during scheduled checks.

Signed out: the private test profile is not returned.
Profile owner: the intended profile is still readable.
Different user: the private test profile is not returned.

What users are saying

Feedback from people using vas.

7 AppSumo reviews

Read all reviews on AppSumo
“I ran a scan on my site through MCP from my AI assistant: start it, poll the status, read the report. … Each finding names the affected URL, so I could check it against my source before changing anything.”
KimchiDee on AppSumoRead full review
“I quickly upgraded to Tier 2. … It's clear that Jacob cares about this product and the people using it.”
wantabit on AppSumoRead full review
“So far, I’ve noticed it has detected some issues in my applications, making it a solid addition to my tech stack.”
eiV4nN0r on AppSumoRead full review
“the reports are actionable, the authenticated checks are genuinely useful, and the team is extremely responsive.”
Tribalee on AppSumoRead full review
“You log in, run a scan, and it gives you an exportable report that can be directly pasted into Claude.”
SGPI on AppSumoRead full review
“Each issue comes with an explanation, supporting evidence, and suggested fixes you can give to your AI coding tool.”
AbeChallah on AppSumoRead full review

AppSumo paid product tester; received the product free.

“Other than those minor issues I think it's a good tool to have.”
dokgu on AppSumoRead full review

Reviews 1 of 7

Used vas? Share your experience.
The audience

Who is vas for?

Vibe coders

You shipped fast on Lovable, Replit, or Base44. vas finds what your AI tool left exposed and hands you a fix to paste straight back in.

Developers

Drive vas from Claude Code or Cursor over MCP, or paste the findings into your editor. Structured findings and SARIF your agent can apply, then re-scan to confirm.

Agencies & teams

Watch every client app with weekly monitoring on Pro: persistent alerts, plus a "Scanned by vas" badge you can show.

The research

Why security needs its own checks.

Research on generated code and reported vulnerabilities, with the scope and source behind each claim.

186

tasks in the SusVibes benchmark

Selected feature-request tasks from open-source projects, evaluated across 12 coding-agent settings. This is not a survey of deployed apps.

SusVibes, revision September 21, 2026
45%

of generated code failed the study’s security tests

Veracode’s 2025 evaluation covered 80 coding tasks, four languages and more than 100 models. The rate applies to that test set.

Veracode, 2025 GenAI research
74

confirmed cases reported by Vibe Security Radar

Georgia Tech’s April report links vulnerabilities to AI-assisted code using repository metadata. This is a dated count, not a live total or prevalence rate.

Georgia Tech, April 13, 2026
RLS

permissions need more than a login screen

A 2025 disclosure described public access to private data in affected Lovable-built apps using Supabase. It does not establish the current state of every Lovable app.

Palmer and Low, 2025 disclosure

Sources reviewed October 5, 2026. These studies use different samples and methods; they are not estimates of how many apps are insecure today or measures of VAS coverage. Explore the research and methodology.

Where AI tools commonly slip up

vas scans for these issues in minutes. Our scanners are specifically tuned for AI-built application vulnerabilities.

Coverage

What We Scan For

Every plan includes standard scans of your live app. Pro also adds weekly deep scans. Browse the full list of checks

150+ checks · 8 categories
01

Vulnerabilities

08 checks
SQL InjectionIDOR & Broken Access ControlXSS Sinks & DOM InjectionGraphQL IntrospectiontRPC Endpoint ProbingAPI Data ExposureJWT WeaknessVulnerable Dependencies (CVEs)
02

Database & Auth

07 checks
Supabase RLS TestingFirebase RulesConvex / MongoDB / Postgres ExposureAuth Endpoint SecurityPassword PolicyRate LimitingPrisma & Drizzle ORM Misconfig
03

Secrets & Exposed Code

04 checks
API Keys in JS Bundles (150+ patterns)Payment Secrets (Stripe, Paddle, LemonSqueezy)Exposed .env / .gitSource Map Exposure
04

Configuration & Headers

05 checks
Security Headers (CSP / HSTS / X-Frame-Options)SSL/TLS & Mixed ContentCORS MisconfigurationCSRF & Form SecurityDebug Mode & WebSocket Security
05

Infrastructure & Platform

07 checks
Platform FingerprintingFull-App Crawl (URLs, forms, APIs)AI/LLM & MCP SecurityNetlify Functions & IdentityBubble.io Data APIEmail Security (SPF / DMARC)Breach Monitoring (HIBP)
06

SEO & AEO

02 checks
SEO Health (meta, canonical, sitemap)AEO/GEO AI visibility (llms.txt, AI crawler rules, JSON-LD)
07

Accessibility & Compliance

03 checks
WCAG AccessibilityLegal Compliance (privacy, ToS, cookie consent)security.txt (RFC 9116)
08

Performance

04 checks
TTFB & Server ResponseCompression & CachingRender-Blocking ResourcesOversized Images & DOM
Audited by vas

Earn a Trust Badge

Pass your scan with no critical or high severity findings? Earn a verifiable trust badge you can embed on your site to show visitors your app has been security tested.

HTML & Markdown embedPublicly verifiable
Pricing

Run your first scan free.
Pay to unlock the full results.

Then upgrade for more scans and monitoring.

The average data breach costs startups $120K–$1.24M.

New-account pricing. Existing account prices and AppSumo plans are unchanged.

MOST POPULAR
Go
$29/month

Full reports, every scan. For apps you keep shipping.

  • 20 live-app scans per month
  • 10 code repository scans per monthConnect GitHub or upload a ZIP
  • Every finding unlocked, with a copy-paste fix for your AI tool
  • Re-scan any project on demand
  • Up to 3 projects

Cancel anytime.

Get Go at $29/mo
Pro
$49/month

More scans. Ongoing monitoring. Less to manage.

  • 150 live-app scans per month
  • 50 code repository scans per monthConnect GitHub or upload a ZIP
  • Weekly extended live-app scans
  • Weekly monitoring with alerts
  • Breach monitoring + email security checks
  • Up to 10 projects

Cancel anytime.

Get Pro at $49/mo

Every live-app plan uses the same standard check suite: security, SEO, AI search readiness (AEO/GEO), performance, accessibility, compliance, and email. Coverage depends on reachable content and completed checks. Repository scans review source separately; neither view guarantees security. See every check we run

Looking for a manual security audit or code review?

Spring Code, the security team behind VAS, offers hands-on security audits, code reviews, and remediation for teams that need expert help.

Request a security audit
FAQ

Frequently Asked Questions

Vibe coding is building apps using AI code generation tools like Lovable, Bolt.new, Cursor, Replit, and v0.dev. You describe what you want in natural language, and AI writes the code. It's fast for prototyping but often produces code with security vulnerabilities that need to be identified and fixed.

Ready to secure your vibe coded app?

Ship fast. Keep checking.

Evidence and fix guidance for your AI tool, with a way to check the result.

Get My Security ReportView Sample Report

Security Guides & Resources

In-depth security guides for AI-built applications

Platform Security Guides

In-depth security analysis for Lovable, Bolt, Cursor, Replit, v0, and 20+ more AI coding platforms.

Browse all platforms

Security Checklists

Review permissions, secrets and deployment settings as your app changes. Separate automated checks from manual verification.

View checklists

Is It Safe?

Honest safety assessments of popular AI coding tools. Understand the real risks before you build.

Read safety guides

How-To Guides

Step-by-step guides to secure your app on any platform, from Supabase RLS to Vercel headers.

Explore guides

Tool Comparisons

Security-focused comparisons: Supabase vs Firebase, Cursor vs Copilot, Vercel vs Netlify, and more.

Compare tools

Vulnerability Database

Common vulnerabilities in AI-built apps: API key exposure, RLS misconfig, broken auth, and more.

Browse vulnerabilities