Vet — AI Output Verification

Verify AI-generated code before it hits your repo.

Vet is a CLI tool that tests AI-generated code for correctness, security, and style before committing. Runs locally in milliseconds. Privacy-first — zero network calls.

npx vet-it init    # Set up pre-commit hook
git add .       # Stage your changes
git commit      # VetCLI runs automatically

Features

• Hallucination Detection — catches fake npm packages, imaginary APIs, made-up imports
• Security Scanning — detects hardcoded secrets, eval(), SQL injection, shell injection
• Style Consistency — checks naming conventions against your project's patterns
• Pre-Commit Hook — automatic verification on every git commit
• Zero Config — works out of the box, no setup needed

Quick Start

# Install globally
npm install -g vet-it

# Or run without installing
npx vet-it init

# Verify staged changes
vetcli

# Check a specific file
vetcli check src/parser.ts

# View configuration
vetcli config

How It Works

1. Install VetCLI in your project
2. Code with your AI tool (Cursor, Copilot, Claude Code)
3. git add . && git commit
4. VetCLI checks every changed file for AI failure modes
5. Fix issues before they land in your repo

Example Output

❯ vetcli

  ❯ VetCLI — AI Output Verification

  Files checked: 3
  Issues found: 2

  ✗ Security
    src/api/auth.ts:42  Hardcoded API key detected
      → Use environment variable instead of literal string
      Fix: process.env.API_KEY

  ✗ Hallucination
    src/utils/parser.ts:12  Package 'super-fast-json' not found on npm
      → AI may have hallucinated this package
      Fix: replace with 'fast-json-stable-stringify'

  Summary: 2 issues. Commit with --force to skip.

Configuration

Create .vet/config.json in your project root:

{
  "checks": {
    "hallucination": true,
    "security": true,
    "style": true
  },
  "severity": {
    "hallucination": "error",
    "security": "error",
    "style": "warning"
  },
  "files": {
    "include": ["src/**/*.ts", "src/**/*.js"],
    "exclude": ["**/*.test.ts", "**/*.spec.ts"]
  }
}

Pricing

Tier	Price	Features
Free	$0	CLI, local verification, community support
Pro	$15/mo	CI integration, SARIF output, advanced rules, email support
Team	$12/user/mo	Shared rules, audit log, centralized policy

License

MIT — core is open source. Pro and Team features are commercial.

Links

• GitHub: github.com/lukeswestun/vetcli
• npm: npmjs.com/package/vet-it
• Website: vetcli.dev