Dead Code Remover
code-yeongyu/oh-my-openagent
Finds unused code in a TypeScript project, confirms each candidate has no references through the language server, then hands removals to parallel agents.
Find and remove unreachable/unused code safely. An agent skill from Archive228/loopkit.
MITAuto-check passed
Install Kill Dead Code
$ npx skills add Archive228/loopkit --skill kill-dead-code -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Archive228/loopkit kill-dead-code --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/Archive228/loopkit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/kill-dead-code .claude/skills/kill-dead-code && 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 "kill-dead-code" agent skill from https://github.com/Archive228/loopkit/tree/main/skills/kill-dead-code into .claude/skills/kill-dead-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kill-dead-code", 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/Archive228/loopkit/tree/main/skills/kill-dead-codeType 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 Archive228/loopkit --skill kill-dead-code -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Archive228/loopkit kill-dead-code --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Archive228/loopkit.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/kill-dead-code .agents/skills/kill-dead-code && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "kill-dead-code" agent skill from https://github.com/Archive228/loopkit/tree/main/skills/kill-dead-code into .agents/skills/kill-dead-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kill-dead-code", 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 Archive228/loopkit --skill kill-dead-code -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Archive228/loopkit kill-dead-code --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Archive228/loopkit.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/kill-dead-code .cursor/skills/kill-dead-code && 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 "kill-dead-code" agent skill from https://github.com/Archive228/loopkit/tree/main/skills/kill-dead-code into .cursor/skills/kill-dead-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kill-dead-code", 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/Archive228/loopkit.git --path skills/kill-dead-code--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 Archive228/loopkit --skill kill-dead-code -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Archive228/loopkit kill-dead-code --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Archive228/loopkit.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/kill-dead-code .gemini/skills/kill-dead-code && 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 "kill-dead-code" agent skill from https://github.com/Archive228/loopkit/tree/main/skills/kill-dead-code into .gemini/skills/kill-dead-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kill-dead-code", 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 Archive228/loopkit kill-dead-codeInstalls 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 Archive228/loopkit --skill kill-dead-code -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Archive228/loopkit.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/kill-dead-code .github/skills/kill-dead-code && 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 "kill-dead-code" agent skill from https://github.com/Archive228/loopkit/tree/main/skills/kill-dead-code into .github/skills/kill-dead-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kill-dead-code", 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 Archive228/loopkit --skill kill-dead-code -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Archive228/loopkit kill-dead-code --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Archive228/loopkit.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/kill-dead-code .opencode/skills/kill-dead-code && 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 "kill-dead-code" agent skill from https://github.com/Archive228/loopkit/tree/main/skills/kill-dead-code into .opencode/skills/kill-dead-code/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kill-dead-code", 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
kill-dead-code- GitHub stars
- 755
- Token cost
- ~197 tokens
- SKILL.md length
- 99 words
- Files
- 1
- Skills in repo
- 52
- Repo updated
- First seen
- Licence
- MIT
At a glance
Find and remove unreachable/unused code safely. An agent skill from Archive228/loopkit.
- Works in 4 steps: Prove it's dead — no references (grep… → Check it's not feature-flagged off (dead… → Delete it AND its now-orphaned tests,… → …
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Kill Dead Code is an agent skill from Archive228/loopkit. Find and remove unreachable/unused code safely. Use during cleanup or before a refactor.
Its SKILL.md is about 200 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: 33 battle-tested skills + minimal .claude harness for any coding agent (Claude Code, Cursor, Codex, Gemini CLI). The licence is MIT.
Example prompts
- “/kill-dead-code”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Prove it's dead — no references (grep the symbol across the repo, including dynamic/string usage and tests). Unused export ≠ dead if it's…
- Check it's not feature-flagged off (dead today, alive when the flag flips).
- Delete it AND its now-orphaned tests, imports, and config.
- Run the full suite + a build. Dead code removal should change behavior in exactly zero ways.
What it can do on your machine
Read from SKILL.md and the folder at commit 5ae033e. 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
Kill Dead Code loads about 197 tokens when it runs. Until then it costs about 26 tokens; SKILL.md has 99 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 Archive228/loopkit at commit 5ae033e, republished under its MIT licence (© Archive228). 99 words, ~197 tokens.
Download SKILL.mdSave it as
.claude/skills/kill-dead-code/SKILL.md (or your agent's skills folder).- name
- kill-dead-code
- description
- Find and remove unreachable/unused code safely. Use during cleanup or before a refactor.
- when_to_use
- cleanup, "remove unused", before refactoring, dead branches
Kill Dead Code
- Prove it's dead — no references (grep the symbol across the repo, including dynamic/string usage and tests). Unused export ≠ dead if it's a public API.
- Check it's not feature-flagged off (dead today, alive when the flag flips).
- Delete it AND its now-orphaned tests, imports, and config.
- Run the full suite + a build. Dead code removal should change behavior in exactly zero ways. Bias to delete: every line someone has to read is a cost. But never delete what you can't prove is unreachable — say "I think X is unused, confirm?" instead of guessing.
© Archive228, 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/kill-dead-code of Archive228/loopkit.
Open the folder on GitHubat commit 5ae033e
Compare with similar skills
Kill Dead Code 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 |
|---|---|---|---|---|---|---|
| Kill Dead Code this skillArchive228/loopkit | 755 | — | ~197 | Automated safety check: Pass | MIT | |
| Dead Code Removercode-yeongyu/oh-my-openagent | 70k | — | ~1.8k | Automated safety check: Pass | Custom licence | |
| Remove Dead Codeqdhenry/Claude-Command-Suite | 1.3k | — | ~986 | Automated safety check: Pass | None | |
| Cleanupsimstudioai/sim | 30k | — | ~1.4k | Automated safety check: Pass | Apache-2.0 | |
| Dead Dependenciesredis/RedisInsight | 8.9k | — | ~1.5k | Automated safety check: Pass | Custom licence | |
| Cleanup Unused Assetsflutter/flutter-intellij | 2k | — | ~378 | Automated safety check: Pass | BSD-3-Clause |
Similar skills
Remove Dead Code
qdhenry/Claude-Command-Suite
Safely identifies and removes dead code in TypeScript/JavaScript projects using multi-agent analysis with automatic backup branches.
Cleanup
simstudioai/sim
Run all code quality skills — effects, memo, callbacks, state, React Query, emcn design review, url-state, comments, and test-audit — analyzing in parallel, then applying fixes sequentially
- Official
Dead Dependencies
redis/RedisInsight
Find and safely remove unused ("dead") npm dependencies in RedisInsight using a grep + leaf-check + build-gate recipe.
Cleanup Unused Assets
flutter/flutter-intellij
Reduce plugin size by scanning resources/icons and removing unreferenced assets.
Unused CSS
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Remove unused CSS rules.
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Questions about Kill Dead Code
What does Kill Dead Code do?
Find and remove unreachable/unused code safely. An agent skill from Archive228/loopkit. Kill Dead Code is an agent skill from Archive228/loopkit. Find and remove unreachable/unused code safely.
How do I install Kill Dead Code in Claude Code?
Run `npx skills add Archive228/loopkit --skill kill-dead-code -a claude-code`. Or copy the skill folder (skills/kill-dead-code in Archive228/loopkit) into .claude/skills/kill-dead-code in your project. Claude Code loads it when a task matches its description.
How do I install Kill Dead Code in Codex?
Run `npx skills add Archive228/loopkit --skill kill-dead-code -a codex`. Or copy the skill folder (skills/kill-dead-code in Archive228/loopkit) into .agents/skills/kill-dead-code in your project. Codex loads it when a task matches its description.
Can I use Kill Dead Code 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 Archive228/loopkit --skill kill-dead-code -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/kill-dead-code, .gemini/skills/kill-dead-code, .github/skills/kill-dead-code and .opencode/skills/kill-dead-code in your project.
What does Kill Dead Code need to run?
SKILL.md names no scripts, command-line tools or credentials: Kill Dead Code is instructions for the agent only.
Does Kill Dead Code 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 Kill Dead Code 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 Kill Dead Code use?
Kill Dead Code 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 Kill Dead Code use?
About 197 tokens (SKILL.md is roughly 788 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 Kill Dead Code?
Skills that share tags, products or a category with Kill Dead Code: Dead Code Remover (code-yeongyu/oh-my-openagent, 70k stars), Remove Dead Code (qdhenry/Claude-Command-Suite, 1.3k stars), Cleanup (simstudioai/sim, 30k stars) and Dead Dependencies (redis/RedisInsight, 8.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Kill Dead Code?
Archive228 (a GitHub user) maintains it in Archive228/loopkit, which has 755 GitHub stars. The repository holds 52 skills in this directory. The repository was last updated on July 14, 2026.
Source: Archive228/loopkit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.