Claude Code Hooks

Organization

aiskillstore

claude-code-hooks

Claude Code hook system for pre/post tool execution. Triggers on: hooks, PreToolUse, PostToolUse, hook script, tool validation, audit logging.

Overview

Publisher	aiskillstore
Repository	`marketplace`
Skill name	`claude-code-hooks`
Stars	427
Forks	45
Bundled files	4
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
4 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by aiskillstore on GitHub. Read the source before you install it.

Installation

Install the Claude Code Hooks AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/aiskillstore/marketplace.git /tmp/marketplace
mkdir -p .claude/skills
cp -r /tmp/marketplace/skills/0xdarkmatter/claude-code-hooks .claude/skills/claude-code-hooks

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Claude Code Hooks in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Claude Code Hooks on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Claude Code Hooks is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Claude Code Hooks

Execute custom scripts before/after Claude Code tool invocations.

Quick Reference

Event	When	Has Matcher
`PreToolUse`	Before tool execution	Yes
`PostToolUse`	After tool completes	Yes
`PermissionRequest`	Permission dialog shown	Yes
`Notification`	Notifications sent	Yes
`UserPromptSubmit`	User submits prompt	No
`Stop`	Agent finishes	No
`SubagentStop`	Subagent finishes	No
`PreCompact`	Before context compaction	No
`SessionStart`	Session begins/resumes	No
`SessionEnd`	Session ends	No

Basic Configuration

Add to ~/.claude/settings.json or .claude/settings.local.json:

json
{
  "hooks": {
    "PreToolUse": [{
      "matcher": "Bash",
      "hooks": [{
        "type": "command",
        "command": "$CLAUDE_PROJECT_DIR/hooks/validate.sh",
        "timeout": 5000
      }]
    }]
  }
}

Matcher Patterns

Pattern	Matches
`"Write"`	Only Write tool
`"*"` or `""`	All tools
`"mcp__*"`	All MCP tools
`"Bash"`	Bash commands

Hook Script Requirements

bash
#!/bin/bash
# Receives JSON via stdin: { "tool_name": "...", "tool_input": {...} }
INPUT=$(cat)
TOOL=$(echo "$INPUT" | jq -r '.tool_name')

# Exit codes:
# 0 = Success (continue)
# 2 = Block with error (stderr shown to Claude)
# Other = Non-blocking error

Common Use Cases

Use Case	Event	Example
Validate inputs	PreToolUse	Block dangerous commands
Audit logging	PostToolUse	Log all tool usage
Custom approval	PermissionRequest	Slack notification
Session init	SessionStart	Load project context

Security Checklist

Quote all variables: "$VAR" not $VAR
Validate paths (no .. traversal)
Use $CLAUDE_PROJECT_DIR for paths
Set reasonable timeouts
Handle jq parsing errors

Troubleshooting

bash
# Debug hook loading
claude --debug

# List registered hooks
/hooks

# Test script manually
echo '{"tool_name":"Bash"}' | ./hooks/validate.sh

Official Documentation

https://code.claude.com/docs/en/hooks - Hooks reference
https://code.claude.com/docs/en/settings - Settings configuration

Additional Resources

./references/hook-events.md - All events with input/output schemas
./references/configuration.md - Advanced config patterns
./references/security-patterns.md - Production security

See Also: claude-code-debug for troubleshooting, claude-code-headless for CLI automation

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Claude Code Hooks AI skill do?

Claude Code hook system for pre/post tool execution. Triggers on: hooks, PreToolUse, PostToolUse, hook script, tool validation, audit logging.

Why use Claude Code Hooks on TypingMind?

Because you install it once and use it with any model. Claude Code Hooks is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Claude Code Hooks in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Claude Code Hooks?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Claude Code Hooks?

As many as you like. As long as a model supports skills, you can use Claude Code Hooks with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Claude Code Hooks AI skill free?

It is published on GitHub by aiskillstore. Check the repository for licensing terms. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Claude Code Hooks

Quick Reference

Basic Configuration

Matcher Patterns

Hook Script Requirements

Common Use Cases

Security Checklist

Troubleshooting

Official Documentation

Additional Resources

Bundled files

Frequently asked questions

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