CodeSentry

Zero-Dependency DevSecOps & AI Code Inspection Engine
Fast deterministic SAST analysis combined with contextual OpenRouter AI verification and automated code repairs.

CodeSentry inspects JavaScript, TypeScript, and Python codebases for security vulnerabilities, logic bugs, algorithmic bottlenecks, and resource leaks. Built with a terminal-native dark aesthetic and live typewriter progress telemetry, it offers built-in security detection, interactive code repairs, and dynamic AI-powered security hardening.

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⚡ Quick Start (Zero-Install)

Run instantly without cloning or installing dependencies:

# Run directly from GitHub with zero install:
npx github:raelx20/codesentry scan .

# Or install globally from npm:
npm install -g codesentry-ai
codesentry scan .

# Or install directly from GitHub:
npm install -g github:raelx20/codesentry

Note: Both codesentry and codesentry-ai command aliases work identically in your shell.

On first run, CodeSentry interactively configures your free OpenRouter API key and saves it to ~/.codesentry/config.json. Subsequent runs never prompt again.

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🌟 Key Capabilities

1. 🛠️ Interactive Post-Scan Fix Engine

After any scan, CodeSentry provides an interactive improvement menu:

• Whole Codebase Mode: Batch-repairs all detected vulnerabilities and bugs across the entire project.
• Specific Flaw Mode: Two-tier category filter (Security Flaws, Code Bugs, Efficiency) to select and preview individual issues.
• Safe Diff Preview: Color-coded diff card (- red / + green) showing the exact file, line, and proposed change.
• Confirmation Guard: Requires explicit approval (Yes, apply fix to file) before writing to disk.
• Auto-Verification: Re-initiates scan immediately after fixes are written to confirm the issue is resolved.

2. 🛡️ Native Built-in Security Detection

Runs out-of-the-box with zero configuration and no external tools or Docker required:

• SQL Injection: Detects template literals, string concatenation, Python f-strings, and % formatting in queries across JavaScript and Python (db.query, cursor.execute, and query assignments).
• Code Injection: Flags dangerous dynamic code execution (eval(), new Function(), Python exec()).
• Command Injection: Detects unquoted shell commands and vulnerable child_process.exec invocations.
• Hardcoded Secrets: Identifies hardcoded API tokens, private keys, and credential literals.
• Path Traversal & XSS: Inspects unsanitized file paths in fs.readFile/res.sendFile and dangerouslySetInnerHTML.
• Insecure Cryptography: Flags deprecated hashing algorithms (MD5, SHA-1).

3. 🤖 AI-Only Proactive Security Suggestions

When a codebase is clean (0 vulnerabilities / 0 bugs / perfect):

• 100% AI-Driven: No static hardcoded bullet points. CodeSentry inspects your project context (manifests, frameworks like Express, Fastify, Flask, Django, and structure) and queries the active OpenRouter AI model.
• Architecture-Level Hardening: The AI model provides custom recommendations covering HTTP security headers (Helmet / CSP), rate limiting (DoS mitigation), token flags (HttpOnly/SameSite), and boundary validation.
• One-Click Export: Save the AI suggestions directly to AI-SECURITY-SUGGESTIONS.md in your project root.

4. 🔑 Global Authentication & Persistent Preferences

• Global Config: Stored in ~/.codesentry/config.json (C:\Users\<user>\.codesentry\config.json on Windows).
• codesentry auth: Dedicated dashboard to view masked keys (sk-or-v1-••••••••••••9339), update tokens, or toggle between AI models.
• codesentry model: Select from top-tier free AI models (poolside/laguna-s-2.1:free, nvidia/nemotron-3-ultra-550b-a55b:free, minimax/minimax-m2.5:free, etc.) with changes persisted globally.

5. 📊 AutoGrad: Continuous Risk Grading & Offline Self-Learning

• Continuous Grade: Computes unified security & quality grade (A+, A, B, C, D, F) and 0–100 score weighted across security, bugs, efficiency, and resource risks.
• Historical Trend Tracking: Compares against previous scans (▲ +4% improved, ▼ -2% degraded) persisted locally in ~/.codesentry/autograd-history.json.
• Self-Learning Offline Memory: Remembers applied fixes locally in ~/.codesentry/autograd-memory.json. When identical or similar patterns reappear, AutoGrad resolves them offline with 0ms latency and zero API calls or quota consumption.

6. 🚀 DeployGuard: Pre-Deployment Readiness & Infrastructure Gate

• Deployment Readiness Score: Evaluates readiness percentage (0–100%) and determines deployment gate verdict: PASSED, WARNING, or BLOCKED.
• Container & Docker Checks: Flags root users in containers, unpinned :latest tags, secrets in ENV/ARG, and insecure ADD directives.
• CI/CD Security: Detects unpinned GitHub Actions (requiring commit SHAs), secrets echoed to build logs, and untrusted pull_request_target workflows.
• Config & Secrets Guard: Intercepts committed .env files, production debug flags (DEBUG=True), permissive wildcard CORS with credentials, and missing HTTP security headers.
• Dedicated Command: Run codesentry deployguard . or enforce in CI with codesentry scan . --gate.

7. 🧠 ModelShield: AI / LLM / RAG & Agent Security Engine

• Prompt Injection Defense: Flags direct, un-sanitized user input concatenated into LLM system or chat prompts.
• Model Deserialization Protection: Intercepts insecure weight loading using pickle or unconstrained torch.load(..., weights_only=False) vulnerable to arbitrary code execution.
• Agent Sandbox Guards: Flags AI agent tools that execute dynamic shell or eval code directly on model outputs.
• LLM Data Leakage: Prevents transmitting credentials, API keys, or sensitive secrets in model prompt payloads.
• RAG Vector Injection: Scans for un-sanitized query strings interpolated into vector database queries.

8. 🕸️ Software Risk Graph & AttackGraph Multi-Step Tracing

• CodeTwin Architectural Modeling: Automatically discovers external HTTP entrypoints, database sinks, shell execution points, and AI prompt interfaces.
• Multi-Step Attack Paths: Correlates static findings to construct end-to-end exploit chains (e.g. [Route: /api/query] ──▶ [Vulnerability: SQL Injection] ──▶ [Sink: db.query]).
• Terminal & Report Visuals: Renders color-coded ANSI attack chain cards in terminal output and interactive Mermaid diagrams in Markdown audit reports.

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🚀 Installation Options

Option A: Global CLI Install

npm install -g codesentry-ai

# Now available globally from any terminal
codesentry scan .
codesentry auth
codesentry model

Option B: Project Dev Dependency

npm install --save-dev codesentry

# Run via npx
npx codesentry scan .

Option C: Clone & Run from Source

git clone https://github.com/raelx20/codesentry.git
cd codesentry/CodeSentry
npm install
npm link # or node bin/codesentry.js scan .

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💻 CLI Commands & Options

# Basic scan
codesentry scan .

# Fast static mode (skips cloud AI triage)
codesentry scan . --no-ai

# Pre-deployment readiness analysis & infrastructure gate
codesentry deployguard .

# Enforce strict CI/CD gate (exits with failure if gate is BLOCKED)
codesentry scan . --gate

# Automatic code repair
codesentry scan . --fix

# Configure or check OpenRouter API credentials
codesentry auth

# Interactively toggle AI reasoning models
codesentry model

# CLI help & documentation
codesentry --help

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🧠 OpenRouter AI Model Catalog

CodeSentry uses OpenRouter's free-tier AI models with automated fallback chaining:

Model ID	Provider	Recommended Use
poolside/laguna-s-2.1:free	Poolside	Default: Fast, precise syntax & logic analysis
nvidia/nemotron-3-ultra-550b-a55b:free	NVIDIA	Complex: Deep polyglot & DevSecOps reasoning
minimax/minimax-m2.5:free	MiniMax	High-speed code triage fallback
nvidia/nemotron-3-super-120b-a12b:free	NVIDIA	Balanced code review
mimo/mimo-2.5:free	Mimo	Fast fallback
cohere/north-mini-code:free	Cohere	Specialized code model
openrouter/auto	OpenRouter	Ultimate Fallback: Auto-routes to available free model

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🚫 Ignore Configuration (.codesentryignore)

Add .codesentryignore to your project root to exclude directories from audits:

node_modules/
dist/
build/
coverage/
*.min.js
*.bundle.js
__pycache__/
.env*

Note: CodeSentry automatically ignores test fixtures (tests/fixtures/) and build caches when scanning user codebases.

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🔄 CI/CD Security Gate (GitHub Actions)

Fail pull requests if high-severity vulnerabilities are introduced:

name: CodeSentry Security Gate

on:
  push:
    branches: [ main, master ]
  pull_request:
    branches: [ main, master ]

jobs:
  security-audit:
    name: CodeSentry SAST Inspection
    runs-on: ubuntu-latest
    steps:
      - name: Check out code
        uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20

      - name: Run CodeSentry Scan
        run: npx github:raelx20/codesentry scan . --severity HIGH
        env:
          OPENROUTER_API_KEY: ${{ secrets.OPENROUTER_API_KEY }}

Exit Codes

Exit Code	Meaning	CI Impact
0	Clean scan (0 issues above threshold)	Pass ✅
1	Violations detected	Fail ❌
2	Fatal runtime or syntax error	Fail ❌

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🐳 Zero Docker Required

CodeSentry is a pure Node.js CLI tool. It has no native compile steps, requires no Docker daemon, and runs on Windows, macOS, and Linux out-of-the-box.

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🧪 Testing & Verification

CodeSentry contains a comprehensive test suite (97 tests across 30 suites):

# Run all unit, analyzer, and integration tests
npm test

# Run unit tests only
npm run test:unit

# Run analyzer tests only
npm run test:analyzers