Git Hooks Automation V2

---
name: git-hooks-automation-v2
description: "Git Hooks Automation workflow skill. Use this skill when the user needs Master Git hooks setup with Husky, lint-staged, pre-commit framework, and commitlint. Automate code quality gates, formatting, linting, and commit message enforcement before code reaches CI and the operator should preserve the upstream workflow, copied support files, and provenance before merging or handing off."
version: "0.0.1"
category: cli-automation
tags: ["git-hooks-automation-v2", "git-hooks-automation", "master", "git", "hooks", "setup", "husky", "lint-staged"]
complexity: advanced
risk: caution
tools: ["codex-cli", "claude-code", "cursor", "gemini-cli", "opencode"]
source: community
author: "sickn33"
date_added: "2026-04-16"
date_updated: "2026-04-25"
---

# Git Hooks Automation

## Overview

This public intake copy packages `plugins/antigravity-awesome-skills/skills/git-hooks-automation` from `https://github.com/sickn33/antigravity-awesome-skills` into the native Omni Skills editorial shape without hiding its origin.

Use it when the operator needs the upstream workflow, support files, and repository context to stay intact while the public validator and private enhancer continue their normal downstream flow.

This intake keeps the copied upstream files intact and uses the `external_source` block in `metadata.json` plus `ORIGIN.md` as the provenance anchor for review.

# Git Hooks Automation Automate code quality enforcement at the Git level. Set up hooks that lint, format, test, and validate before commits and pushes ever reach your CI pipeline — catching issues in seconds instead of minutes.

Imported source sections that did not map cleanly to the public headings are still preserved below or in the support files. Notable imported sections: Git Hooks Fundamentals, Husky + lint-staged (Node.js Projects), pre-commit Framework (Python / Polyglot), Custom Hook Scripts (Any Language), CI Integration, Common Pitfalls & Fixes.

## When to Use This Skill

Use this section as the trigger filter. It should make the activation boundary explicit before the operator loads files, runs commands, or opens a pull request.

- User asks to "set up git hooks" or "add pre-commit hooks"
- Configuring Husky, lint-staged, or the pre-commit framework
- Enforcing commit message conventions (Conventional Commits, commitlint)
- Automating linting, formatting, or type-checking before commits
- Setting up pre-push hooks for test runners
- Migrating from Husky v4 to v9+ or adopting hooks from scratch

## Operating Table

| Situation | Start here | Why it matters |
| --- | --- | --- |
| First-time use | `metadata.json` | Confirms repository, branch, commit, and imported path through the `external_source` block before touching the copied workflow |
| Provenance review | `ORIGIN.md` | Gives reviewers a plain-language audit trail for the imported source |
| Workflow execution | `SKILL.md` | Starts with the smallest copied file that materially changes execution |
| Supporting context | `SKILL.md` | Adds the next most relevant copied source file without loading the entire package |
| Handoff decision | `## Related Skills` | Helps the operator switch to a stronger native skill when the task drifts |

## Workflow

This workflow is intentionally editorial and operational at the same time. It keeps the imported source useful to the operator while still satisfying the public intake standards that feed the downstream enhancer flow.

1. Confirm the user goal, the scope of the imported workflow, and whether this skill is still the right router for the task.
2. Read the overview and provenance files before loading any copied upstream support files.
3. Load only the references, examples, prompts, or scripts that materially change the outcome for the current request.
4. Execute the upstream workflow while keeping provenance and source boundaries explicit in the working notes.
5. Validate the result against the upstream expectations and the evidence you can point to in the copied files.
6. Escalate or hand off to a related skill when the work moves out of this imported workflow's center of gravity.
7. Before merge or closure, record what was used, what changed, and what the reviewer still needs to verify.

### Imported Workflow Notes

#### Imported: Git Hooks Fundamentals

Git hooks are scripts that run automatically at specific points in the Git workflow. They live in `.git/hooks/` and are not version-controlled by default — which is why tools like Husky exist.

### Hook Types & When They Fire

| Hook | Fires When | Common Use |
|---|---|---|
| `pre-commit` | Before commit is created | Lint, format, type-check staged files |
| `prepare-commit-msg` | After default msg, before editor | Auto-populate commit templates |
| `commit-msg` | After user writes commit message | Enforce commit message format |
| `post-commit` | After commit is created | Notifications, logging |
| `pre-push` | Before push to remote | Run tests, check branch policies |
| `pre-rebase` | Before rebase starts | Prevent rebase on protected branches |
| `post-merge` | After merge completes | Install deps, run migrations |
| `post-checkout` | After checkout/switch | Install deps, rebuild assets |

### Native Git Hooks (No Framework)

```bash
# Create a pre-commit hook manually
cat > .git/hooks/pre-commit << 'EOF'
#!/bin/sh
set -e

# Run linter on staged files only
STAGED_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.(js|ts|jsx|tsx)$' || true)

if [ -n "$STAGED_FILES" ]; then
  echo "🔍 Linting staged files..."
  echo "$STAGED_FILES" | xargs npx eslint --fix
  echo "$STAGED_FILES" | xargs git add  # Re-stage after fixes
fi
EOF
chmod +x .git/hooks/pre-commit
```

**Problem**: `.git/hooks/` is local-only and not shared with the team. Use a framework instead.

## Examples

### Example 1: Ask for the upstream workflow directly

```text
Use @git-hooks-automation-v2 to handle <task>. Start from the copied upstream workflow, load only the files that change the outcome, and keep provenance visible in the answer.
```

**Explanation:** This is the safest starting point when the operator needs the imported workflow, but not the entire repository.

### Example 2: Ask for a provenance-grounded review

```text
Review @git-hooks-automation-v2 against metadata.json and ORIGIN.md, then explain which copied upstream files you would load first and why.
```

**Explanation:** Use this before review or troubleshooting when you need a precise, auditable explanation of origin and file selection.

### Example 3: Narrow the copied support files before execution

```text
Use @git-hooks-automation-v2 for <task>. Load only the copied references, examples, or scripts that change the outcome, and name the files explicitly before proceeding.
```

**Explanation:** This keeps the skill aligned with progressive disclosure instead of loading the whole copied package by default.

### Example 4: Build a reviewer packet

```text
Review @git-hooks-automation-v2 using the copied upstream files plus provenance, then summarize any gaps before merge.
```

**Explanation:** This is useful when the PR is waiting for human review and you want a repeatable audit packet.



## Best Practices

Treat the generated public skill as a reviewable packaging layer around the upstream repository. The goal is to keep provenance explicit and load only the copied source material that materially improves execution.

- Staged files only — Never lint the entire codebase on every commit
- Auto-fix when possible — --fix flags reduce developer friction
- Fast hooks — Pre-commit should complete in < 5 seconds
- Fail loud — Clear error messages with actionable fixes
- Team-shared — Use Husky or core.hooksPath so hooks are version-controlled
- CI as backup — Hooks are convenience; CI is the enforcer
- Gradual adoption — Start with formatting, add linting, then testing

### Imported Operating Notes

#### Imported: Key Principles

- **Staged files only** — Never lint the entire codebase on every commit
- **Auto-fix when possible** — `--fix` flags reduce developer friction
- **Fast hooks** — Pre-commit should complete in < 5 seconds
- **Fail loud** — Clear error messages with actionable fixes
- **Team-shared** — Use Husky or `core.hooksPath` so hooks are version-controlled
- **CI as backup** — Hooks are convenience; CI is the enforcer
- **Gradual adoption** — Start with formatting, add linting, then testing

## Troubleshooting

### Problem: The operator skipped the imported context and answered too generically

**Symptoms:** The result ignores the upstream workflow in `plugins/antigravity-awesome-skills/skills/git-hooks-automation`, fails to mention provenance, or does not use any copied source files at all.
**Solution:** Re-open `metadata.json`, `ORIGIN.md`, and the most relevant copied upstream files. Check the `external_source` block first, then restate the provenance before continuing.

### Problem: The imported workflow feels incomplete during review

**Symptoms:** Reviewers can see the generated `SKILL.md`, but they cannot quickly tell which references, examples, or scripts matter for the current task.
**Solution:** Point at the exact copied references, examples, scripts, or assets that justify the path you took. If the gap is still real, record it in the PR instead of hiding it.

### Problem: The task drifted into a different specialization

**Symptoms:** The imported skill starts in the right place, but the work turns into debugging, architecture, design, security, or release orchestration that a native skill handles better.
**Solution:** Use the related skills section to hand off deliberately. Keep the imported provenance visible so the next skill inherits the right context instead of starting blind.



## Related Skills

- `@00-andruia-consultant` - Use when the work is better handled by that native specialization after this imported skill establishes context.
- `@00-andruia-consultant-v2` - Use when the work is better handled by that native specialization after this imported skill establishes context.
- `@10-andruia-skill-smith` - Use when the work is better handled by that native specialization after this imported skill establishes context.
- `@10-andruia-skill-smith-v2` - Use when the work is better handled by that native specialization after this imported skill establishes context.

## Additional Resources

Use this support matrix and the linked files below as the operator packet for this imported skill. They should reflect real copied source material, not generic scaffolding.

| Resource family | What it gives the reviewer | Example path |
| --- | --- | --- |
| `references` | copied reference notes, guides, or background material from upstream | `references/n/a` |
| `examples` | worked examples or reusable prompts copied from upstream | `examples/n/a` |
| `scripts` | upstream helper scripts that change execution or validation | `scripts/n/a` |
| `agents` | routing or delegation notes that are genuinely part of the imported package | `agents/n/a` |
| `assets` | supporting assets or schemas copied from the source package | `assets/n/a` |



### Imported Reference Notes

#### Imported: Husky + lint-staged (Node.js Projects)

The modern standard for JavaScript/TypeScript projects. Husky manages Git hooks; lint-staged runs commands only on staged files for speed.

### Quick Setup (Husky v9+)

```bash
# Install
npm install --save-dev husky lint-staged

# Initialize Husky (creates .husky/ directory)
npx husky init

# The init command creates a pre-commit hook — edit it:
echo "npx lint-staged" > .husky/pre-commit
```

### Configure lint-staged in `package.json`

```json
{
  "lint-staged": {
    "*.{js,jsx,ts,tsx}": [
      "eslint --fix --max-warnings=0",
      "prettier --write"
    ],
    "*.{css,scss}": [
      "prettier --write",
      "stylelint --fix"
    ],
    "*.{json,md,yml,yaml}": [
      "prettier --write"
    ]
  }
}
```

### Add Commit Message Linting

```bash
# Install commitlint
npm install --save-dev @commitlint/cli @commitlint/config-conventional

# Create commitlint config
cat > commitlint.config.js << 'EOF'
module.exports = {
  extends: ['@commitlint/config-conventional'],
  rules: {
    'type-enum': [2, 'always', [
      'feat', 'fix', 'docs', 'style', 'refactor',
      'perf', 'test', 'build', 'ci', 'chore', 'revert'
    ]],
    'subject-max-length': [2, 'always', 72],
    'body-max-line-length': [2, 'always', 100]
  }
};
EOF

# Add commit-msg hook
echo "npx --no -- commitlint --edit \$1" > .husky/commit-msg
```

### Add Pre-Push Hook

```bash
# Run tests before pushing
echo "npm test" > .husky/pre-push
```

### Complete Husky Directory Structure

```
project/
├── .husky/
│   ├── pre-commit        # npx lint-staged
│   ├── commit-msg        # npx --no -- commitlint --edit $1
│   └── pre-push          # npm test
├── commitlint.config.js
├── package.json          # lint-staged config here
└── ...
```

#### Imported: pre-commit Framework (Python / Polyglot)

Language-agnostic framework that works with any project. Hooks are defined in YAML and run in isolated environments.

### Setup

```bash
# Install (Python required)
pip install pre-commit

# Create config
cat > .pre-commit-config.yaml << 'EOF'
repos:
  # Built-in checks
  - repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v4.6.0
    hooks:
      - id: trailing-whitespace
      - id: end-of-file-fixer
      - id: check-yaml
      - id: check-json
      - id: check-added-large-files
        args: ['--maxkb=500']
      - id: check-merge-conflict
      - id: detect-private-key

  # Python formatting
  - repo: https://github.com/psf/black
    rev: 24.4.2
    hooks:
      - id: black

  # Python linting
  - repo: https://github.com/astral-sh/ruff-pre-commit
    rev: v0.4.4
    hooks:
      - id: ruff
        args: ['--fix']
      - id: ruff-format

  # Shell script linting
  - repo: https://github.com/shellcheck-py/shellcheck-py
    rev: v0.10.0.1
    hooks:
      - id: shellcheck

  # Commit message format
  - repo: https://github.com/compilerla/conventional-pre-commit
    rev: v3.2.0
    hooks:
      - id: conventional-pre-commit
        stages: [commit-msg]
EOF

# Install hooks into .git/hooks/
pre-commit install
pre-commit install --hook-type commit-msg

# Run against all files (first time)
pre-commit run --all-files
```

### Key Commands

```bash
pre-commit install              # Install hooks
pre-commit run --all-files      # Run on everything (CI or first setup)
pre-commit autoupdate           # Update hook versions
pre-commit run <hook-id>        # Run a specific hook
pre-commit clean                # Clear cached environments
```

#### Imported: Custom Hook Scripts (Any Language)

For projects not using Node or Python, write hooks directly in shell.

### Portable Pre-Commit Hook

```bash
#!/bin/sh
# .githooks/pre-commit — Team-shared hooks directory
set -e

echo "=== Pre-Commit Checks ==="

# 1. Prevent commits to main/master
BRANCH=$(git symbolic-ref --short HEAD 2>/dev/null || echo "detached")
if [ "$BRANCH" = "main" ] || [ "$BRANCH" = "master" ]; then
  echo "❌ Direct commits to $BRANCH are not allowed. Use a feature branch."
  exit 1
fi

# 2. Check for debugging artifacts
if git diff --cached --diff-filter=ACM | grep -nE '(console\.log|debugger|binding\.pry|import pdb)' > /dev/null 2>&1; then
  echo "⚠️  Debug statements found in staged files:"
  git diff --cached --diff-filter=ACM | grep -nE '(console\.log|debugger|binding\.pry|import pdb)'
  echo "Remove them or use git commit --no-verify to bypass."
  exit 1
fi

# 3. Check for large files (>1MB)
LARGE_FILES=$(git diff --cached --name-only --diff-filter=ACM | while read f; do
  size=$(wc -c < "$f" 2>/dev/null || echo 0)
  if [ "$size" -gt 1048576 ]; then echo "$f ($((size/1024))KB)"; fi
done)
if [ -n "$LARGE_FILES" ]; then
  echo "❌ Large files detected:"
  echo "$LARGE_FILES"
  exit 1
fi

# 4. Check for secrets patterns
if git diff --cached --diff-filter=ACM | grep -nEi '(AKIA[0-9A-Z]{16}|sk-[a-zA-Z0-9]{48}|ghp_[a-zA-Z0-9]{36}|password\s*=\s*["\x27][^"\x27]+["\x27])' > /dev/null 2>&1; then
  echo "🚨 Potential secrets detected in staged changes! Review before committing."
  exit 1
fi

echo "✅ All pre-commit checks passed"
```

### Share Custom Hooks via `core.hooksPath`

```bash
# In your repo, set a shared hooks directory
git config core.hooksPath .githooks

# Add to project setup docs or Makefile
# Makefile
setup:
	git config core.hooksPath .githooks
	chmod +x .githooks/*
```

#### Imported: CI Integration

Hooks are a first line of defense, but CI is the source of truth.

### Run pre-commit in CI (GitHub Actions)

```yaml
# .github/workflows/lint.yml
name: Lint
on: [push, pull_request]
jobs:
  pre-commit:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: '3.12'
      - uses: pre-commit/action@v3.0.1
```

### Run lint-staged in CI (Validation Only)

```yaml
# Validate that lint-staged would pass (catch bypassed hooks)
name: Lint Check
on: [pull_request]
jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 20
      - run: npm ci
      - run: npx eslint . --max-warnings=0
      - run: npx prettier --check .
```

#### Imported: Common Pitfalls & Fixes

### Hooks Not Running

| Symptom | Cause | Fix |
|---|---|---|
| Hooks silently skipped | Not installed in `.git/hooks/` | Run `npx husky init` or `pre-commit install` |
| "Permission denied" | Hook file not executable | `chmod +x .husky/pre-commit` |
| Hooks run but wrong ones | Stale hooks from old setup | Delete `.git/hooks/` contents, reinstall |
| Works locally, fails in CI | Different Node/Python versions | Pin versions in CI config |

### Performance Issues

```json
// ❌ Slow: runs on ALL files every commit
{
  "scripts": {
    "precommit": "eslint src/ && prettier --write src/"
  }
}

// ✅ Fast: lint-staged runs ONLY on staged files
{
  "lint-staged": {
    "*.{js,ts}": ["eslint --fix", "prettier --write"]
  }
}
```

### Bypassing Hooks (When Needed)

```bash
# Skip all hooks for a single commit
git commit --no-verify -m "wip: quick save"

# Skip pre-push only
git push --no-verify

# Skip specific pre-commit hooks
SKIP=eslint git commit -m "fix: update config"
```

> **Warning**: Bypassing hooks should be rare. If your team frequently bypasses, the hooks are too slow or too strict — fix them.

#### Imported: Migration Guide

### Husky v4 → v9 Migration

```bash
# 1. Remove old Husky
npm uninstall husky
rm -rf .husky

# 2. Remove old config from package.json
# Delete "husky": { "hooks": { ... } } section

# 3. Install fresh
npm install --save-dev husky
npx husky init

# 4. Recreate hooks
echo "npx lint-staged" > .husky/pre-commit
echo "npx --no -- commitlint --edit \$1" > .husky/commit-msg

# 5. Clean up — old Husky used package.json config,
#    new Husky uses .husky/ directory with plain scripts
```

### Adopting Hooks on an Existing Project

```bash
# Step 1: Start with formatting only (low friction)
# lint-staged config:
{ "*.{js,ts}": ["prettier --write"] }

# Step 2: Add linting after team adjusts (1-2 weeks later)
{ "*.{js,ts}": ["eslint --fix", "prettier --write"] }

# Step 3: Add commit message linting
# Step 4: Add pre-push test runner

# Gradual adoption prevents team resistance
```

#### Imported: Limitations

- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.