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hk - Git Hook Manager
hk
Use when hk.pkl exists in project, hook output shows hk running, or working with git hooks in hk-managed projects. Also use when setting up, configuring, or troubleshooting hk git hooks.
SKILL.md
Full skill instructions
hk - Git Hook Manager
Overview
hk is a fast git hook manager by jdx (author of mise). Uses pkl configuration language. Provides 90+ built-in linters.
Docs: https://hk.jdx.dev/ GitHub: https://github.com/jdx/hk
Detection
Identify which hook manager a project uses:
| File | Hook Manager |
|---|---|
hk.pkl | hk |
lefthook.yml | lefthook |
.husky/ directory | husky |
.pre-commit-config.yaml | pre-commit (python) |
Key Commands
hk init # Create initial hk.pkl
hk install # Set up git hooks
hk check # Run checks manually (read-only)
hk fix # Auto-fix issues
hk builtins # List available builtins
hk validate # Validate config
hk config dump # Show effective configuration
Core Concepts
- Hooks: Git hook types (pre-commit, commit-msg, pre-push)
- Steps: Named units of work within hooks
- Builtins: Pre-configured linters (90+) via
Builtins.pkl - Profiles: Enable/disable groups of steps (
--profile slow)
Configuration
When editing hk.pkl, read hk-pkl-reference.md in this skill directory for structure and examples.
Built-in Linters
When looking up builtins, read builtins-reference.md in this skill directory. Or run hk builtins for the live list.
Finding Help
Stable reference: Read the reference files in this skill directory when needed.
Latest docs:
npx @mdream/crawl https://hk.jdx.dev/ --output /tmp/hk-docs
GitHub issues:
gh issue list -R jdx/hk # List open issues
gh search issues --repo jdx/hk "error" # Search issues
gh issue view 123 -R jdx/hk # View specific issue
Troubleshooting
Hook not running:
hk install # Reinstall hooks
cat .git/hooks/pre-commit # Verify hook calls hk
Step skipped:
hk check -v # Verbose output shows skip reasons
hk config dump # Check effective configuration
Validate config:
hk validate # Check hk.pkl syntax
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