claude-code-hooks

@coding-agent-fabric/plugin-claude-code-hooks

Plugin for managing Claude Code hooks (PreToolUse and PostToolUse).

Overview

This plugin enables installation and management of hooks for Claude Code, which execute shell commands before or after tool usage.

Supported Agents

• claude-code

Hook Types

• PreToolUse: Executed before a tool is used
• PostToolUse: Executed after a tool is used

Hook Configuration Format

Hooks are defined in JSON format:

{
  "hookType": "PreToolUse",
  "tools": ["Edit", "Write"],
  "command": "echo 'About to edit a file'",
  "description": "Log before file edits"
}

Fields

• hookType (required): Either PreToolUse or PostToolUse
• command (required): Shell command to execute
• tools (optional): Array of tool names to apply this hook to (empty = all tools)
• description (optional): Human-readable description

Installation Paths

• Global: ~/.claude/hooks/
• Project: ./.claude/hooks/

Usage

# Install a hook
caf install local:./path/to/hooks --type claude-code-hooks --agent claude-code

# List installed hooks
caf list --type claude-code-hooks

# Remove a hook
caf remove hook-name --type claude-code-hooks

Example Hooks

Pre-commit Hook

{
  "hookType": "PreToolUse",
  "tools": ["Bash"],
  "command": "git diff --cached --name-only | grep -q . || exit 0",
  "description": "Verify staged changes before git operations"
}

Auto-format on Write

{
  "hookType": "PostToolUse",
  "tools": ["Write", "Edit"],
  "command": "trunk fmt ${FILE_PATH}",
  "description": "Auto-format files after writing"
}