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.
This skill should be used when needing to locate files within the Claude Code plugins cache directory (~/.claude/plugins/cache).
Install Find Plugin File
$ npx skills add closedloop-ai/claude-plugins --skill find-plugin-file -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install closedloop-ai/claude-plugins find-plugin-file --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/closedloop-ai/claude-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/code/skills/find-plugin-file .claude/skills/find-plugin-file && 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 "find-plugin-file" agent skill from https://github.com/closedloop-ai/claude-plugins/tree/main/plugins/code/skills/find-plugin-file into .claude/skills/find-plugin-file/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "find-plugin-file", 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/closedloop-ai/claude-plugins/tree/main/plugins/code/skills/find-plugin-fileType 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 closedloop-ai/claude-plugins --skill find-plugin-file -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install closedloop-ai/claude-plugins find-plugin-file --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/closedloop-ai/claude-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/code/skills/find-plugin-file .agents/skills/find-plugin-file && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "find-plugin-file" agent skill from https://github.com/closedloop-ai/claude-plugins/tree/main/plugins/code/skills/find-plugin-file into .agents/skills/find-plugin-file/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "find-plugin-file", 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 closedloop-ai/claude-plugins --skill find-plugin-file -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install closedloop-ai/claude-plugins find-plugin-file --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/closedloop-ai/claude-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/code/skills/find-plugin-file .cursor/skills/find-plugin-file && 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 "find-plugin-file" agent skill from https://github.com/closedloop-ai/claude-plugins/tree/main/plugins/code/skills/find-plugin-file into .cursor/skills/find-plugin-file/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "find-plugin-file", 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/closedloop-ai/claude-plugins.git --path plugins/code/skills/find-plugin-file--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 closedloop-ai/claude-plugins --skill find-plugin-file -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install closedloop-ai/claude-plugins find-plugin-file --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/closedloop-ai/claude-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/code/skills/find-plugin-file .gemini/skills/find-plugin-file && 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 "find-plugin-file" agent skill from https://github.com/closedloop-ai/claude-plugins/tree/main/plugins/code/skills/find-plugin-file into .gemini/skills/find-plugin-file/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "find-plugin-file", 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 closedloop-ai/claude-plugins find-plugin-fileInstalls 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 closedloop-ai/claude-plugins --skill find-plugin-file -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/closedloop-ai/claude-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/code/skills/find-plugin-file .github/skills/find-plugin-file && 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 "find-plugin-file" agent skill from https://github.com/closedloop-ai/claude-plugins/tree/main/plugins/code/skills/find-plugin-file into .github/skills/find-plugin-file/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "find-plugin-file", 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 closedloop-ai/claude-plugins --skill find-plugin-file -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install closedloop-ai/claude-plugins find-plugin-file --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/closedloop-ai/claude-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/code/skills/find-plugin-file .opencode/skills/find-plugin-file && 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 "find-plugin-file" agent skill from https://github.com/closedloop-ai/claude-plugins/tree/main/plugins/code/skills/find-plugin-file into .opencode/skills/find-plugin-file/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "find-plugin-file", 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
find-plugin-file- GitHub stars
- 122
- Token cost
- ~812 tokens
- SKILL.md length
- 212 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 43
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
This skill should be used when needing to locate files within the Claude Code plugins cache directory (~/.claude/plugins/cache).
- Include finding tool scripts
- SKILL.md covers Overview, Quick Start, Usage Examples and Integration with Slash Commands, plus 3 more sections
- Runs Python scripts from its folder; calls python3
- Any plugin resource when the hardcoded path is unknown
What it does
Find Plugin File is an agent skill from closedloop-ai/claude-plugins. This skill should be used when needing to locate files within the Claude Code plugins cache directory (~/.claude/plugins/cache). Triggers include finding tool scripts, skill files, or any plugin resource when the hardcoded path is unknown or varies by plugin version. Use when slash commands or orchestrators need to dynamically resolve plugin file paths.
Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/find_plugin_file.py`).
It sits in Agent Workflows, covering Hooks and plugins. The repository describes itself as: Open-source Claude Code plugins for multi-agent software delivery. Plan-first SDLC workflow, code review, LLM quality judges, and self-learning — grounded in your codebase… The licence is Apache-2.0.
When your agent uses it
- Include finding tool scripts
- Any plugin resource when the hardcoded path is unknown
- Varies by plugin version
- Orchestrators need to dynamically resolve plugin file paths
Example prompts
- “/find-plugin-file”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 0e20ac0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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.
Context cost
Find Plugin File loads about 812 tokens when it runs. Until then it costs about 93 tokens; SKILL.md has 212 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 passed
The automated check found no risky patterns in SKILL.md.
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); the scripts in this folder are not scanned.
SKILL.md
The full file from closedloop-ai/claude-plugins at commit 0e20ac0, republished under its Apache-2.0 licence (© closedloop-ai). 212 words, ~812 tokens.
Download SKILL.mdSave it as
.claude/skills/find-plugin-file/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- find-plugin-file
- description
- This skill should be used when needing to locate files within the Claude Code plugins cache directory (~/.claude/plugins/cache). Triggers include finding tool scripts, skill files, or any plugin resource when the hardcoded path is unknown or varies by plugin version. Use when slash commands or orchestrators need to dynamically resolve plugin file paths.
Find Plugin File
Overview
This skill provides a utility to dynamically locate files within the Claude Code plugins cache directory. Instead of hardcoding plugin-cache paths, use this skill to find files in ~/.claude/plugins/cache/closedloop-ai/ with automatic latest-version resolution.
Quick Start
To find a file in the plugins cache, run the find_plugin_file.py script:
python3 scripts/find_plugin_file.py <file_pattern>Usage Examples
Find by filename
# Find parse_args.py in any plugin (returns first match)
python3 scripts/find_plugin_file.py parse_args.py
# Find all SKILL.md files across all plugins
python3 scripts/find_plugin_file.py SKILL.md --allFind by path pattern
# Find a specific file using path pattern
python3 scripts/find_plugin_file.py plan/parse_args.py
# Find tools in a specific subdirectory
python3 scripts/find_plugin_file.py tools/python/plan/parse_args.pyRestrict to specific plugin
# Search only in code plugin
python3 scripts/find_plugin_file.py parse_args.py --plugin codeList available plugins
python3 scripts/find_plugin_file.py --list-pluginsIntegration with Slash Commands
To use in a slash command that needs to reference plugin tools, use a two-step approach:
# Step 1: Locate the find_plugin_file.py script (handles multiple plugin versions)
FIND_SCRIPT=`ls ~/.claude/plugins/cache/closedloop-ai/code/*/skills/find-plugin-file/scripts/find_plugin_file.py 2>/dev/null | sort -V | tail -1`
# Step 2: Use the script to find the target file, then derive TOOLS_PATH
TARGET_FILE=`python3 "$FIND_SCRIPT" plan/parse_args.py`
TOOLS_PATH=`dirname \`dirname "$TARGET_FILE"\``
# Step 3: Run with correct PYTHONPATH
PYTHONPATH="$TOOLS_PATH:$PYTHONPATH" python3 "$TARGET_FILE" --helpImportant:
- Use backticks (
`) instead of$()for command substitution — Claude Code's Bash tool escapes$()syntax. - The glob pattern
code/*/skills/...can match multiple version directories. Always usels ... | sort -V | tail -1to select the latest version.
Script Arguments
| Argument | Description |
|---|---|
file_pattern | File name or path pattern to find |
--plugin, -p | Restrict search to a specific plugin |
--all, -a | Return all matches instead of just the first |
--list-plugins, -l | List available plugins and their latest versions |
--cache-dir | Override the default cache directory |
Version Resolution
The script automatically selects the latest version of each plugin using semantic versioning comparison. For example, if a plugin has versions 1.6.0, 1.9.1, and 1.10.0, it will search in 1.10.0.
Resources
scripts/
find_plugin_file.py- Main utility script for locating files in the plugins cache
© closedloop-ai, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (scripts) in plugins/code/skills/find-plugin-file of closedloop-ai/claude-plugins.
- SKILL.md
- scripts/find_plugin_file.py
Open the folder on GitHubat commit 0e20ac0
Compare with similar skills
Find Plugin File 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 |
|---|---|---|---|---|---|---|
| Find Plugin File this skillclosedloop-ai/claude-plugins | 122 | — | ~812 | Automated safety check: Pass | Apache-2.0 | |
| 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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Related
Categories
Questions about Find Plugin File
What does Find Plugin File do?
This skill should be used when needing to locate files within the Claude Code plugins cache directory (~/.claude/plugins/cache). Find Plugin File is an agent skill from closedloop-ai/claude-plugins.claude/plugins/cache).
When should I use Find Plugin File?
Find Plugin File fits situations like: include finding tool scripts; any plugin resource when the hardcoded path is unknown; varies by plugin version; orchestrators need to dynamically resolve plugin file paths.
How do I install Find Plugin File in Claude Code?
Run `npx skills add closedloop-ai/claude-plugins --skill find-plugin-file -a claude-code`. Or copy the skill folder (plugins/code/skills/find-plugin-file in closedloop-ai/claude-plugins) into .claude/skills/find-plugin-file in your project. Claude Code loads it when a task matches its description.
How do I install Find Plugin File in Codex?
Run `npx skills add closedloop-ai/claude-plugins --skill find-plugin-file -a codex`. Or copy the skill folder (plugins/code/skills/find-plugin-file in closedloop-ai/claude-plugins) into .agents/skills/find-plugin-file in your project. Codex loads it when a task matches its description.
Can I use Find Plugin File 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 closedloop-ai/claude-plugins --skill find-plugin-file -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/find-plugin-file, .gemini/skills/find-plugin-file, .github/skills/find-plugin-file and .opencode/skills/find-plugin-file in your project.
What does Find Plugin File need to run?
Going by SKILL.md and its folder, Find Plugin File needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Find Plugin File access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Find Plugin File safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Find Plugin File use?
Find Plugin File is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Find Plugin File use?
About 812 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Find Plugin File?
Skills that share tags, products or a category with Find Plugin File: 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 Find Plugin File?
closedloop-ai (a GitHub organization) maintains it in closedloop-ai/claude-plugins, which has 122 GitHub stars. The repository holds 43 skills in this directory. The repository was last updated on October 7, 2026.
Source: closedloop-ai/claude-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.