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Hook Manager

hook-manager

Discover and install automation hooks for Claude Code and Opencode. This skill should be used when users ask to "list hooks", "install a hook", "show available hooks", "enable hook", "what hooks are available", or need help managing agent automation hooks.

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SKILL.md

Full skill instructions

Hook Manager

Discover, install, and manage automation hooks from the bopen-tools collection for Claude Code and Opencode.

Available Hooks

HookEventDescriptionAuto-install
protect-env-filesPreToolUseBlocks edits to .env files (security)Recommended
uncommitted-reminderStopShows uncommitted changes when agent stopsOptional
auto-git-addPostToolUseAuto-stages files after editsOptional
time-dir-contextUserPromptSubmitAdds timestamp/​dir/​branch to promptsOptional
lint-on-savePostToolUseRuns lint:fix after file editsOptional
lint-on-startSessionStartRuns linting on session startOptional
auto-test-on-savePostToolUseRuns tests after file editsOptional
protect-shadcn-componentsPreToolUseProtects shadcn UI componentsOptional

Installing a Hook

Hooks are installed by copying the JSON config to your agent's hooks directory:

Claude Code

# Create hooks directory if needed
mkdir -p ~/​.claude/​hooks

# Copy hook from plugin cache
cp ~/​.claude/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/<hook-name>.json ~/​.claude/​hooks/

Opencode

# Create hooks directory if needed
mkdir -p ~/​.opencode/​hooks

# Copy hook from plugin cache
cp ~/​.opencode/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/<hook-name>.json ~/​.opencode/​hooks/

Then restart your agent to load the hook.

Hook Details

protect-env-files (Recommended)

Security hook - Prevents accidental edits to environment files containing secrets.

  • Blocks: .env, .env.local, .env.production, .env.staging
  • Prompts for confirmation if edit attempted
  • No performance impact

uncommitted-reminder

Shows git status when Claude finishes responding if there are uncommitted changes.

  • Helps prevent forgotten commits
  • Exit code 2 feeds back to Claude

auto-git-add

Automatically runs git add -A after Write/​Edit/​MultiEdit operations.

  • Only stages, never commits
  • 5 second timeout

time-dir-context

Adds context line to every prompt: timestamp, working directory, git branch.

  • Example: Context: 2025-01-24 14:32:15 | /​Users/​you/​project | Branch: main

lint-on-save

Runs bun lint:fix after file edits.

  • Requires project with lint:fix script in package.json
  • Requires bun and jq
  • Works with statusline for lint count display

lint-on-start

Runs linting when session starts.

  • Same requirements as lint-on-save

auto-test-on-save

Runs tests after file edits.

  • Can be slow on large test suites
  • Consider project-specific setup

protect-shadcn-components

Prevents edits to shadcn/​ui component files.

  • Only relevant for projects using shadcn/​ui

Installing This Skill

bunx skills add b-open-io/​bopen-tools --skill hook-manager

Uninstalling a Hook

Claude Code:

rm ~/​.claude/​hooks/<hook-name>.json

Opencode:

rm ~/​.opencode/​hooks/<hook-name>.json

Restart your agent.

Listing Installed Hooks

Claude Code:

ls ~/​.claude/​hooks/

Opencode:

ls ~/​.opencode/​hooks/

Quick Install Commands

Claude Code

# Security (recommended)
cp ~/​.claude/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​protect-env-files.json ~/​.claude/​hooks/

# Workflow helpers
cp ~/​.claude/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​uncommitted-reminder.json ~/​.claude/​hooks/
cp ~/​.claude/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​auto-git-add.json ~/​.claude/​hooks/

# Context enrichment
cp ~/​.claude/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​time-dir-context.json ~/​.claude/​hooks/

# Development automation
cp ~/​.claude/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​lint-on-save.json ~/​.claude/​hooks/
cp ~/​.claude/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​lint-on-start.json ~/​.claude/​hooks/

Opencode

# Security (recommended)
cp ~/​.opencode/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​protect-env-files.json ~/​.opencode/​hooks/

# Workflow helpers
cp ~/​.opencode/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​uncommitted-reminder.json ~/​.opencode/​hooks/
cp ~/​.opencode/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​auto-git-add.json ~/​.opencode/​hooks/

# Context enrichment
cp ~/​.opencode/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​time-dir-context.json ~/​.opencode/​hooks/

# Development automation
cp ~/​.opencode/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​lint-on-save.json ~/​.opencode/​hooks/
cp ~/​.opencode/​plugins/​cache/​bopen-tools/​user/​.claude/​hooks/​lint-on-start.json ~/​.opencode/​hooks/

Verifying Installation

After installing and restarting your agent:

claude --debug

Look for hook registration messages in the debug output.