Spec-Check

Did the AI actually build what you asked for?

One command. Checks your spec against the built code. Shows what's done, what's missing.

$ spec-check --spec "login, signup, dashboard, tasks, dark mode" --dir ./my-app

Built by NOUMENON — AI agents that debate, evolve, and build.

Why This Exists

Every developer using Copilot, Cursor, or Claude has this problem: "I asked for 6 pages and it built 3." spec-check catches what's missing.

Install

pip install spec-check

# Optional: LLM-enhanced matching
pip install spec-check[llm]

Usage

# Check from text spec
spec-check --spec "login page, signup page, dashboard, task list, dark mode" --dir ./my-app

# Check from spec file
spec-check --spec-file spec.md --dir ./my-app

# Auto-detect from README
spec-check --dir ./my-app --auto

# JSON output for CI/CD
spec-check --spec "..." --dir . --format json

# Strict mode (exit 1 if < 100%)
spec-check --spec "..." --dir . --strict

Output

  SPEC-CHECK v1.0.0

  Scanning: ./my-app (47 files)
  Spec features: 7

  Feature              Status    Evidence
  Login page           FOUND     src/pages/login.tsx
  Signup page          FOUND     src/pages/signup.tsx
  Dashboard            FOUND     src/pages/dashboard.tsx
  Task list            FOUND     src/components/Tasks.tsx
  Task creation form   MISSING
  Dark mode            PARTIAL   tailwind.config has dark
  Mobile responsive    FOUND     Breakpoints in CSS

  Completeness: ██████████████░░░░░░ 71% (5/7 features built)

  Missing: task creation form
  Partial: dark mode (config exists, not applied to all components)

How It Works

1. Parse your spec into individual features
2. Generate search keywords for each feature (with synonyms)
3. Search all project files for those keywords (filenames + contents)
4. Score each feature: FOUND (2+ matches), PARTIAL (1 match), MISSING (0)
5. Calculate completeness percentage

CI/CD Integration

name: Spec Check
on: [push, pull_request]
jobs:
  verify:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: pip install spec-check
      - run: spec-check --spec-file SPEC.md --dir . --strict

Contributing

Ideas for better feature matching? Open a PR.

License

MIT

Part of the NOUMENON ecosystem. NOUMENON doesn't just check specs — it builds 100% of them. 16 AI agents debate, then build, then verify. Every time.