Claude Code Agent Development
anthropics/claude-plugins-official
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.
Polish your own diff by hand with KISS/DRY and local style — the pre-handoff pass, not a test run and not a subagent sweep.
Install Clean
$ npx skills add OutThisLife/brooklyn-skills --skill clean -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install OutThisLife/brooklyn-skills clean --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/OutThisLife/brooklyn-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/clean .claude/skills/clean && 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 "clean" agent skill from https://github.com/OutThisLife/brooklyn-skills/tree/main/skills/clean into .claude/skills/clean/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "clean", 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/OutThisLife/brooklyn-skills/tree/main/skills/cleanType 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 OutThisLife/brooklyn-skills --skill clean -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install OutThisLife/brooklyn-skills clean --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OutThisLife/brooklyn-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/clean .agents/skills/clean && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "clean" agent skill from https://github.com/OutThisLife/brooklyn-skills/tree/main/skills/clean into .agents/skills/clean/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "clean", 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 OutThisLife/brooklyn-skills --skill clean -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install OutThisLife/brooklyn-skills clean --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OutThisLife/brooklyn-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/clean .cursor/skills/clean && 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 "clean" agent skill from https://github.com/OutThisLife/brooklyn-skills/tree/main/skills/clean into .cursor/skills/clean/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "clean", 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/OutThisLife/brooklyn-skills.git --path skills/clean--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 OutThisLife/brooklyn-skills --skill clean -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install OutThisLife/brooklyn-skills clean --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OutThisLife/brooklyn-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/clean .gemini/skills/clean && 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 "clean" agent skill from https://github.com/OutThisLife/brooklyn-skills/tree/main/skills/clean into .gemini/skills/clean/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "clean", 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 OutThisLife/brooklyn-skills cleanInstalls 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 OutThisLife/brooklyn-skills --skill clean -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/OutThisLife/brooklyn-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/clean .github/skills/clean && 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 "clean" agent skill from https://github.com/OutThisLife/brooklyn-skills/tree/main/skills/clean into .github/skills/clean/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "clean", 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 OutThisLife/brooklyn-skills --skill clean -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install OutThisLife/brooklyn-skills clean --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OutThisLife/brooklyn-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/clean .opencode/skills/clean && 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 "clean" agent skill from https://github.com/OutThisLife/brooklyn-skills/tree/main/skills/clean into .opencode/skills/clean/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "clean", 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
clean- GitHub stars
- 199
- Token cost
- ~392 tokens
- SKILL.md length
- 200 words
- Files
- 1
- Skills in repo
- 22
- Repo updated
- First seen
- Licence
- MIT
At a glance
Polish your own diff by hand with KISS/DRY and local style — the pre-handoff pass, not a test run and not a subagent sweep.
- Works in 6 steps: Re-read your diff. Cut dead code,… → Extend existing helpers — don't… → Match neighboring style (names, imports,… → …
- Automatically before creating
- SKILL.md covers Do and Don't
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Clean is an agent skill from OutThisLife/brooklyn-skills. Polish your own diff by hand with KISS/DRY and local style — the pre-handoff pass, not a test run and not a subagent sweep. Use for /clean, "clean it up", "tidy this", and automatically before creating, updating, or automerging a PR or moving to the next one.
Its SKILL.md is about 390 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering Subagents. The repository describes itself as: Skills that drive best-in-class engineering. The licence is MIT.
When your agent uses it
- Automatically before creating
- Automerging a PR
- Moving to the next one
Example prompts
- “clean it up”
- “tidy this”
- “/clean”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Re-read your diff. Cut dead code, leftover debug logging, and duplication.
- Extend existing helpers — don't parallel-implement.
- Match neighboring style (names, imports, file layout, comment density).
- Prefer the small sharp version over ceremony.
- UI work: only after they like the UI (ui-only). Use ui-system for
- On the PR: title/body describe the change as a whole (a short intro), not a
What it can do on your machine
Read from SKILL.md and the folder at commit 8a97904. 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
No scripts in the folder and no shell commands in SKILL.md.
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
Clean loads about 392 tokens when it runs. Until then it costs about 66 tokens; SKILL.md has 200 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); files beside SKILL.md are not scanned.
SKILL.md
The full file from OutThisLife/brooklyn-skills at commit 8a97904, republished under its MIT licence (© OutThisLife). 200 words, ~392 tokens.
Download SKILL.mdSave it as
.claude/skills/clean/SKILL.md (or your agent's skills folder).- name
- clean
- description
- Polish your own diff by hand with KISS/DRY and local style — the pre-handoff pass, not a test run and not a subagent sweep. Use for /clean, "clean it up", "tidy this", and automatically before creating, updating, or automerging a PR or moving to the next one.
Clean
KISS/DRY and copy the local code style. Be elitist, shorthand, clever, concise, efficient, and elegant.
"Clean" means polishing the code — it does NOT mean running the test suite, tsc, or lint as the task. Run a check only if it's genuinely needed to confirm the polish is safe.
Clean is a standalone pass, not just a pre-PR step — run it whenever things get messy, including mid-work. Also run it automatically before any PR handoff (creating, updating, automerging, or moving to the next PR) without being told each time.
Do
- Re-read your diff. Cut dead code, leftover debug logging, and duplication.
- Extend existing helpers — don't parallel-implement.
- Match neighboring style (names, imports, file layout, comment density).
- Prefer the small sharp version over ceremony.
- UI work: only after they like the UI (
ui-only). Useui-systemfor primitives. - On the PR: title/body describe the change as a whole (a short intro), not a
changelog of steps. Split into topical commits (
pr-update), runno-tropeson the text, and link the PR.
Don't
- Run the test suite / tsc / lint just because you were told to "clean"
- Unrelated refactors
- New abstractions with one caller
- Scope creep dressed up as cleanup
© OutThisLife, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/clean of OutThisLife/brooklyn-skills.
Open the folder on GitHubat commit 8a97904
Compare with similar skills
Clean 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 |
|---|---|---|---|---|---|---|
| Clean this skillOutThisLife/brooklyn-skills | 199 | — | ~392 | Automated safety check: Pass | MIT | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 38k | 8 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Subagent Driven DevelopmentAsvarox/allkaraoke | 261 | 38 repos | ~1.2k | Automated safety check: Pass | None | |
| Dispatching Parallel Agentsultralisp/ultralisp | 258 | 41 repos | ~1.5k | Automated safety check: Pass | None | |
| Paseo Advisor Second Opiniongetpaseo/paseo | 20k | 1 repos | ~756 | Automated safety check: Pass | Custom licence | |
| Task Observerrebelytics/one-skill-to-rule-them-all | 3.2k | 1 repos | ~12k | Automated safety check: Pass | CC-BY-4.0 |
Similar skills
- Official
Subagent Driven Development
Asvarox/allkaraoke
A skill your agent uses when executing implementation plans with independent tasks in the current session
Dispatching Parallel Agents
ultralisp/ultralisp
A skill your agent uses when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
Paseo Advisor Second Opinion
getpaseo/paseo
Launches one separate agent through Paseo to give a second opinion on the current task, with a self-contained briefing and no permission to edit files.
Task Observer
rebelytics/one-skill-to-rule-them-all
Monitors task execution for skill improvement opportunities.
O2 Review Loop
openobserve/openobserve
Splits a change into planner, coder and independent reviewer roles: you confirm a spec, a subagent implements it, and a separate reviewer checks each round's local WIP commit.
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Free Disk Space
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Safely reclaim disk space on macOS without touching personal or agent data.
List Open Work
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List my open MRs/PRs in the current repo/worktree, each with its tracker ticket.
PR Ready
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Clear everything blocking an existing PR/MR from merging — rebase onto the default branch, get CI green, and resolve review threads (Copilot and human).
PR Triage
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Maintainer triage on OTHER people's PRs/MRs — verdict of approve, supersede, or close, salvage with credit, close the cluster.
PR Update
OutThisLife/brooklyn-skills
Open a PR/MR if missing, or refresh an existing one's title and description so they match the current diff.
Related
Categories
Questions about Clean
What does Clean do?
Polish your own diff by hand with KISS/DRY and local style — the pre-handoff pass, not a test run and not a subagent sweep. Clean is an agent skill from OutThisLife/brooklyn-skills. Polish your own diff by hand with KISS/DRY and local style — the pre-handoff pass, not a test run and not a subagent sweep.
When should I use Clean?
Clean fits situations like: automatically before creating; automerging a PR; moving to the next one.
How do I install Clean in Claude Code?
Run `npx skills add OutThisLife/brooklyn-skills --skill clean -a claude-code`. Or copy the skill folder (skills/clean in OutThisLife/brooklyn-skills) into .claude/skills/clean in your project. Claude Code loads it when a task matches its description.
How do I install Clean in Codex?
Run `npx skills add OutThisLife/brooklyn-skills --skill clean -a codex`. Or copy the skill folder (skills/clean in OutThisLife/brooklyn-skills) into .agents/skills/clean in your project. Codex loads it when a task matches its description.
Can I use Clean 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 OutThisLife/brooklyn-skills --skill clean -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/clean, .gemini/skills/clean, .github/skills/clean and .opencode/skills/clean in your project.
What does Clean need to run?
SKILL.md names no scripts, command-line tools or credentials: Clean is instructions for the agent only.
Does Clean 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 Clean 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. Review the folder before installing.
What licence does Clean use?
Clean is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Clean use?
About 392 tokens (SKILL.md is roughly 1.6k 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 Clean?
Skills that share tags, products or a category with Clean: Claude Code Agent Development (anthropics/claude-plugins-official, 38k stars), Subagent Driven Development (Asvarox/allkaraoke, 261 stars), Dispatching Parallel Agents (ultralisp/ultralisp, 258 stars) and Paseo Advisor Second Opinion (getpaseo/paseo, 20k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Clean?
OutThisLife (a GitHub user) maintains it in OutThisLife/brooklyn-skills, which has 199 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on October 5, 2026.
Source: OutThisLife/brooklyn-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.