appguardrail 0.1.0

Security guardrails for AI-built apps.

AppGuardrail

Security guardrails for AI-built apps.

AppGuardrail was formerly developed as VibeSec. The rename avoids the occupied third-party PyPI vibesec namespace.

AppGuardrail helps builders using Cursor, Claude Code, Lovable, Replit, Bolt, Supabase, Firebase, Vercel, and Netlify find and fix security issues introduced during AI-assisted development.

AI 생성 앱을 위한 보안 가드레일. AppGuardrail은 Cursor, Claude Code, Lovable, Replit, Bolt, Supabase, Firebase, Vercel, Netlify로 만든 앱에서 자주 발생하는 보안 문제를 찾고 고칠 수 있게 돕습니다.

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What is AppGuardrail?

AppGuardrail is a persistent security layer for AI-assisted builders — not a one-time pentest, but a security co-pilot that stays with you through the entire lifecycle of your AI-built app: coding, deployment, operation, updates, and incident response.

AppGuardrail = AI 앱 빌더의 미니 보안팀

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What AppGuardrail Provides

Layer	Description
🛡️ AppGuardrail Rules	Security rules for AI coding assistants (Cursor, Claude Code, Windsurf, Lovable)
🔍 AppGuardrail Scan	Lightweight static analysis for secrets, auth gaps, misconfigurations
👁️ AppGuardrail Review	Human-readable review templates and AI-powered audit prompts
📡 AppGuardrail Monitor	Continuous security checks triggered by commits, deploys, and feature additions
🔧 AppGuardrail Fix	AI-ready fix prompts + patch guidance + re-verification steps

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Quick Start

Run the CLI

Requires Python 3.9 or newer.

Install from PyPI:

python3 -m pip install appguardrail
appguardrail --help

Initialize security rules in your project

# For Cursor users
appguardrail init --tool cursor

# For Claude Code users
appguardrail init --tool claude-code

# For a Next.js + Supabase stack
appguardrail init --stack nextjs-supabase

This creates:

• .cursor/rules/appguardrail.md
• CLAUDE.md
• APPGUARDRAIL_CHECKLIST.md

Scan your codebase

appguardrail scan .

# Also run Trivy FS for dependency CVEs, secrets, and IaC misconfigurations
appguardrail scan --trivy .

Detects:

• Hardcoded secrets (SUPABASE_SERVICE_ROLE_KEY, STRIPE_SECRET_KEY, etc.)
• Trivy-backed dependency vulnerabilities, secrets, and misconfigurations
• Dangerous Supabase/Firebase usage patterns
• API routes missing authentication
• Public Firebase rules (read/write: true)
• Dangerous CORS settings (origin: "*")
• Missing Stripe webhook signature verification
• Unprotected admin routes
• Risky file upload handlers

Deploy-blocking counts focus on app code. Findings in docs, tests, examples, and scanner fixtures stay visible but do not fail the deploy gate by default.

Generate a security review prompt

appguardrail review --stack nextjs --db supabase --payments stripe

Outputs a prompt you can paste directly into Claude Code or Cursor.

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Repository Structure

appguardrail/
├── README.md
├── rules/                        # Security rules for AI coding tools
│   ├── cursor/
│   ├── claude-code/
│   ├── windsurf/
│   └── lovable/
├── checklists/                   # Stack-specific security checklists
│   ├── auth.md
│   ├── authorization.md
│   ├── supabase.md
│   ├── firebase.md
│   ├── stripe.md
│   ├── file-upload.md
│   ├── api-security.md
│   ├── secrets.md
│   └── deployment.md
├── prompts/                      # AI fix and review prompts
│   ├── secure-code-review.md
│   ├── fix-authz-bugs.md
│   ├── supabase-rls-review.md
│   ├── stripe-webhook-review.md
│   └── admin-route-review.md
├── scanner/                      # Lightweight static analysis engine
│   ├── rules/
│   │   ├── secrets.yml
│   │   ├── authz.yml
│   │   ├── supabase.yml
│   │   ├── firebase.yml
│   │   ├── nextjs.yml
│   │   └── stripe.yml
│   └── cli/
│       └── appguardrail.py
├── reports/                      # Report templates
│   └── templates/
│       ├── founder-friendly-report.md
│       ├── agency-report.md
│       └── fix-pack.md
├── examples/                     # Sample vulnerable and fixed apps
│   ├── vulnerable-vibe-app/
│   └── fixed-vibe-app/
└── docs/                         # Methodology and responsible testing
    ├── methodology.md
    ├── scope-and-authorization.md
    └── responsible-testing.md

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The AppGuardrail Fix Format

AppGuardrail doesn't hand you a traditional security report. Every finding comes with:

Problem:
  User A can access User B's project data by supplying B's project_id.

Risk:
  Customer data may be exposed across users.

Fix Prompt:
  "Update all project API routes to verify that the authenticated user's id
   matches project.owner_id before returning data. Return 403 when ownership
   does not match. Add tests for cross-user access."

Verification:
  Request User B's project_id using User A's token → expect HTTP 403.

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Why AppGuardrail is Different from Traditional SAST

Traditional scanners target classic vulnerabilities (SQLi, XSS). AI-coded apps fail differently:

AI-coding failure mode	Example
Missing ownership check	Any user can read any record
Public storage bucket	Files accessible without auth
Exposed service role key	Full DB access from the browser
Supabase/Firebase rule mistake	RLS disabled or allow read: if true
Insecure webhook	No Stripe signature verification
AI-generated temporary code	// TODO: add auth later left in production

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Services (Paid)

Product	Description
AppGuardrail Snapshot	One-time security assessment of your current app
AppGuardrail Review	Code, config, and authorization structure review
AppGuardrail Red Team Lite	Defensive penetration test based on real user scenarios
AppGuardrail Fix Pack	Patches and prompts to fix discovered issues
AppGuardrail Retainer	Monthly security review of every change
AppGuardrail Monitor	Continuous automated monitoring on every commit/deploy

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Contributing

This project is open-source and welcomes contributions of:

• New security rules for AI coding tools
• Stack-specific checklists
• Fix prompts for common vulnerability patterns
• Scanner detection rules

Please read docs/responsible-testing.md before contributing scanner rules.

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License

MIT — see LICENSE