Hook Development for Claude Code Plugins
anthropics/claude-plugins-official
Explains how to write Claude Code plugin hooks, both prompt-based checks and bash commands, for events such as PreToolUse, Stop and SessionStart.
Claude Code hook system for pre/post tool execution. An agent skill from aiskillstore/marketplace.
Install Claude Code Hooks
$ npx skills add aiskillstore/marketplace --skill claude-code-hooks -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace claude-code-hooks --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/0xdarkmatter/claude-code-hooks .claude/skills/claude-code-hooks && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "claude-code-hooks" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks into .claude/skills/claude-code-hooks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-hooks", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooksType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill claude-code-hooks -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace claude-code-hooks --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/0xdarkmatter/claude-code-hooks .agents/skills/claude-code-hooks && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "claude-code-hooks" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks into .agents/skills/claude-code-hooks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-hooks", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill claude-code-hooks -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace claude-code-hooks --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/0xdarkmatter/claude-code-hooks .cursor/skills/claude-code-hooks && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "claude-code-hooks" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks into .cursor/skills/claude-code-hooks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-hooks", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/0xdarkmatter/claude-code-hooks--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill claude-code-hooks -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace claude-code-hooks --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/0xdarkmatter/claude-code-hooks .gemini/skills/claude-code-hooks && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "claude-code-hooks" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks into .gemini/skills/claude-code-hooks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-hooks", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace claude-code-hooksInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill claude-code-hooks -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/0xdarkmatter/claude-code-hooks .github/skills/claude-code-hooks && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "claude-code-hooks" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks into .github/skills/claude-code-hooks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-hooks", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill claude-code-hooks -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace claude-code-hooks --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/0xdarkmatter/claude-code-hooks .opencode/skills/claude-code-hooks && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "claude-code-hooks" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/0xdarkmatter/claude-code-hooks into .opencode/skills/claude-code-hooks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "claude-code-hooks", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
claude-code-hooks- GitHub stars
- 430
- Used in
- 1 other repo
- Token cost
- ~742 tokens
- SKILL.md length
- 177 words
- Files
- 5 (incl. references)
- Skills in repo
- 1,085
- Repo updated
- First seen
- Licence
- None found
At a glance
Claude Code hook system for pre/post tool execution. An agent skill from aiskillstore/marketplace.
- Tool validation
- SKILL.md covers Quick Reference, Basic Configuration, Matcher Patterns and Hook Script Requirements, plus 5 more sections
- Calls jq and claude
- Tasks that involve Hooks and plugins
What it does
Claude Code Hooks is an agent skill from aiskillstore/marketplace. Claude Code hook system for pre/post tool execution. Triggers on: hooks, PreToolUse, PostToolUse, hook script, tool validation, audit logging.
Its SKILL.md is about 740 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `references/configuration.md`, `references/hook-events.md` and `references/security-patterns.md`). Compatibility notes: Claude Code CLI with settings.json support
It sits in Agent Workflows, covering Hooks and plugins. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Tool validation
- Tasks that involve Hooks and plugins
Example prompts
- “/claude-code-hooks”
Requirements
- Compatibility (from SKILL.md): Claude Code CLI with settings.json support
- Pre-approved tools (allowed-tools): Bash, Read, Write
What it can do on your machine
Read from SKILL.md and the folder at commit 4ac52da. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
BashReadWrite
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
jqclaude
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
code.claude.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Claude Code CLI with settings.json support
From compatibility in the SKILL.md frontmatter.
Context cost
Claude Code Hooks loads about 742 tokens when it runs, and up to ~4.3k if it reads all its reference files. Until then it costs about 40 tokens; SKILL.md has 177 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, Read, Write
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 177 words (~742 tokens).
“Execute custom scripts before/after Claude Code tool invocations.”
- name
- claude-code-hooks
- allowed-tools
- Bash, Read, Write
- compatibility
- Claude Code CLI with settings.json support
- related-skills
- claude-code-debug, claude-code-headless
Files
SKILL.md and 4 other files (references) in skills/0xdarkmatter/claude-code-hooks of aiskillstore/marketplace.
- SKILL.md
- references/configuration.md
- references/hook-events.md
- references/security-patterns.md
- skill-report.json
Open the folder on GitHubat commit 4ac52da
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Claude Code Hooks next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Claude Code Hooks this skillaiskillstore/marketplace | 430 | 1 repos | ~742 | Automated safety check: Notes | None | |
| Hook Development for Claude Code Pluginsanthropics/claude-plugins-official | 37k | 11 repos | ~4.1k | Automated safety check: Notes | Apache-2.0 | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 37k | 8 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Claude Code Skill Developer Guidediet103/claude-code-infrastructure-showcase | 10k | 10 repos | ~3.5k | Automated safety check: Pass | MIT | |
| Plugin Settings Patternanthropics/claude-plugins-official | 37k | 7 repos | ~3k | Automated safety check: Pass | Apache-2.0 | |
| MCP Integration for Pluginsanthropics/claude-plugins-official | 37k | 11 repos | ~3.1k | Automated safety check: Pass | Apache-2.0 |
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Claude Code Agent Development
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Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
Claude Code Skill Developer Guide
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- Official
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anthropics/claude-plugins-official
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Categories
Questions about Claude Code Hooks
What does Claude Code Hooks do?
Claude Code hook system for pre/post tool execution. An agent skill from aiskillstore/marketplace. Claude Code Hooks is an agent skill from aiskillstore/marketplace. Claude Code hook system for pre/post tool execution.
When should I use Claude Code Hooks?
Claude Code Hooks fits situations like: tool validation; tasks that involve Hooks and plugins.
How do I install Claude Code Hooks in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill claude-code-hooks -a claude-code`. Or copy the skill folder (skills/0xdarkmatter/claude-code-hooks in aiskillstore/marketplace) into .claude/skills/claude-code-hooks in your project. Claude Code loads it when a task matches its description.
How do I install Claude Code Hooks in Codex?
Run `npx skills add aiskillstore/marketplace --skill claude-code-hooks -a codex`. Or copy the skill folder (skills/0xdarkmatter/claude-code-hooks in aiskillstore/marketplace) into .agents/skills/claude-code-hooks in your project. Codex loads it when a task matches its description.
Can I use Claude Code Hooks in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill claude-code-hooks -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/claude-code-hooks, .gemini/skills/claude-code-hooks, .github/skills/claude-code-hooks and .opencode/skills/claude-code-hooks in your project.
What does Claude Code Hooks need to run?
Going by SKILL.md and its folder, Claude Code Hooks needs the command-line tools its instructions call (jq and claude). Its frontmatter pre-approves these tools: Bash, Read, Write. Compatibility (from SKILL.md): Claude Code CLI with settings.json support.
Does Claude Code Hooks access the network?
SKILL.md names 1 domain. As links in the text: code.claude.com. This is read from the text; nothing was executed.
Is Claude Code Hooks safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Claude Code Hooks use?
No licence was found for Claude Code Hooks or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Claude Code Hooks use?
About 742 tokens (SKILL.md is roughly 3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.5k tokens, read only when the agent opens those files.
What are the alternatives to Claude Code Hooks?
Skills that share tags, products or a category with Claude Code Hooks: Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 37k stars), Claude Code Agent Development (anthropics/claude-plugins-official, 37k stars), Claude Code Skill Developer Guide (diet103/claude-code-infrastructure-showcase, 10k stars) and Plugin Settings Pattern (anthropics/claude-plugins-official, 37k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Claude Code Hooks?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.