Ponytail
DavidObando/gsharp
Forces the laziest solution that actually works, simplest, shortest, most minimal.
Simplify existing code for clarity and maintainability without changing behavior.
Install Code Simplifier
$ npx skills add feiskyer/codex-settings --skill code-simplifier -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install feiskyer/codex-settings code-simplifier --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/feiskyer/codex-settings.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/code-simplifier .claude/skills/code-simplifier && 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 "code-simplifier" agent skill from https://github.com/feiskyer/codex-settings/tree/main/skills/code-simplifier into .claude/skills/code-simplifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplifier", 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/feiskyer/codex-settings/tree/main/skills/code-simplifierType 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 feiskyer/codex-settings --skill code-simplifier -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install feiskyer/codex-settings code-simplifier --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/feiskyer/codex-settings.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/code-simplifier .agents/skills/code-simplifier && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "code-simplifier" agent skill from https://github.com/feiskyer/codex-settings/tree/main/skills/code-simplifier into .agents/skills/code-simplifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplifier", 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 feiskyer/codex-settings --skill code-simplifier -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install feiskyer/codex-settings code-simplifier --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/feiskyer/codex-settings.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/code-simplifier .cursor/skills/code-simplifier && 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 "code-simplifier" agent skill from https://github.com/feiskyer/codex-settings/tree/main/skills/code-simplifier into .cursor/skills/code-simplifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplifier", 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/feiskyer/codex-settings.git --path skills/code-simplifier--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 feiskyer/codex-settings --skill code-simplifier -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install feiskyer/codex-settings code-simplifier --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/feiskyer/codex-settings.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/code-simplifier .gemini/skills/code-simplifier && 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 "code-simplifier" agent skill from https://github.com/feiskyer/codex-settings/tree/main/skills/code-simplifier into .gemini/skills/code-simplifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplifier", 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 feiskyer/codex-settings code-simplifierInstalls 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 feiskyer/codex-settings --skill code-simplifier -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/feiskyer/codex-settings.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/code-simplifier .github/skills/code-simplifier && 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 "code-simplifier" agent skill from https://github.com/feiskyer/codex-settings/tree/main/skills/code-simplifier into .github/skills/code-simplifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplifier", 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 feiskyer/codex-settings --skill code-simplifier -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install feiskyer/codex-settings code-simplifier --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/feiskyer/codex-settings.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/code-simplifier .opencode/skills/code-simplifier && 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 "code-simplifier" agent skill from https://github.com/feiskyer/codex-settings/tree/main/skills/code-simplifier into .opencode/skills/code-simplifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplifier", 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
code-simplifier- GitHub stars
- 244
- Token cost
- ~521 tokens
- SKILL.md length
- 262 words
- Files
- 2
- Skills in repo
- 11
- Repo updated
- First seen
- Licence
- MIT
At a glance
Simplify existing code for clarity and maintainability without changing behavior.
- Asked to clean up
- SKILL.md covers Scope and conventions, Refinement criteria and Completion
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Especially recent changes
What it does
Code Simplifier is an agent skill from feiskyer/codex-settings. Simplify existing code for clarity and maintainability without changing behavior. Use when asked to clean up or simplify code, especially recent changes.
Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Development, covering Code simplification. The repository describes itself as: Curated skills, profiles, and config templates that supercharge Codex CLI — multi-model, deep research, image gen & browser automation. The licence is MIT.
When your agent uses it
- Asked to clean up
- Especially recent changes
Example prompts
- “/code-simplifier”
What it can do on your machine
Read from SKILL.md and the folder at commit d7f6570. 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
Code Simplifier loads about 521 tokens when it runs. Until then it costs about 42 tokens; SKILL.md has 262 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 feiskyer/codex-settings at commit d7f6570, republished under its MIT licence (© feiskyer). 262 words, ~521 tokens.
Download SKILL.mdSave it as
.claude/skills/code-simplifier/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- code-simplifier
- description
- Simplify existing code for clarity and maintainability without changing behavior. Use when asked to clean up or simplify code, especially recent changes.
Code Simplifier
Make code easier to understand and maintain without changing what it does. Prefer readable, explicit code over compact or clever rewrites.
Scope and conventions
Use the user's named files or diff. Otherwise, focus on code touched in the current task or clearly identified recent changes; ask for a target if none is evident. Inspect surrounding code as needed without turning a local cleanup into a repository-wide refactor. For review-only requests, propose changes without editing.
Follow applicable project guidance, such as AGENTS.md or CLAUDE.md, and the conventions in nearby code. Derive import style, function syntax, type annotations, framework patterns, and error handling from that project rather than imposing a different style.
Refinement criteria
- Preserve observable behavior, including public interfaces, outputs, errors, side effects, and evaluation order. Treat bug fixes or behavior changes as separate work unless requested.
- Reduce unnecessary nesting, duplication, and indirection where doing so makes the logic easier to follow. Keep helpful abstractions and separate unrelated concerns.
- Improve names and remove comments that merely restate the code; retain comments that explain intent or non-obvious constraints.
- Prefer explicit branches over nested ternaries or dense one-liners when they obscure the logic. Fewer lines alone is not an improvement.
Completion
Finish the scoped cleanup and validate it using checks appropriate to the change and the repository's requirements. For non-obvious rewrites, check relevant edge cases against the original behavior. If behavioral equivalence remains unclear, retain the original form and explain the limitation.
Report significant refinements, checks run, and any remaining validation gaps. If no worthwhile simplification is found, say so without manufacturing edits.
© feiskyer, MIT. 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 in skills/code-simplifier of feiskyer/codex-settings.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit d7f6570
Compare with similar skills
Code Simplifier 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 |
|---|---|---|---|---|---|---|
| Code Simplifier this skillfeiskyer/codex-settings | 244 | — | ~521 | Automated safety check: Pass | MIT | |
| PonytailDavidObando/gsharp | 564 | 8 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Ponytail Reviewkortix-ai/suna | 20k | 4 repos | ~593 | Automated safety check: Pass | Custom licence | |
| Code Simplification for ego-litecitrolabs/ego-lite | 17k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Refactor Pass for Simplicitystar-history/star-history | 9.6k | 1 repos | ~168 | Automated safety check: Pass | MIT | |
| RTK Rust Code Simplifierrtk-ai/rtk | 83k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Ponytail Review
kortix-ai/suna
Code review focused exclusively on over-engineering. An agent skill from kortix-ai/suna.
Code Simplification for ego-lite
citrolabs/ego-lite
Finds and implements evidence-backed simplifications in the ego-lite repository, such as dead code, duplicated state and speculative abstractions, without hiding behavior changes.
Refactor Pass for Simplicity
star-history/star-history
Perform a refactor pass focused on simplicity after recent changes. Use when the user asks for a refactor/cleanup pass, simplification, or dead-code removal…
RTK Rust Code Simplifier
rtk-ai/rtk
Reviews RTK's Rust code for over-engineering and verbose patterns, applying idioms like iterator chains and early returns while protecting a specific list of constraints from being simplified away.
Deslop
millionco/react-doctor
Simplify and refine recently modified code while preserving functionality.
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Related
Categories
Questions about Code Simplifier
What does Code Simplifier do?
Simplify existing code for clarity and maintainability without changing behavior. Code Simplifier is an agent skill from feiskyer/codex-settings. Simplify existing code for clarity and maintainability without changing behavior.
When should I use Code Simplifier?
Code Simplifier fits situations like: asked to clean up; especially recent changes.
How do I install Code Simplifier in Claude Code?
Run `npx skills add feiskyer/codex-settings --skill code-simplifier -a claude-code`. Or copy the skill folder (skills/code-simplifier in feiskyer/codex-settings) into .claude/skills/code-simplifier in your project. Claude Code loads it when a task matches its description.
How do I install Code Simplifier in Codex?
Run `npx skills add feiskyer/codex-settings --skill code-simplifier -a codex`. Or copy the skill folder (skills/code-simplifier in feiskyer/codex-settings) into .agents/skills/code-simplifier in your project. Codex loads it when a task matches its description.
Can I use Code Simplifier 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 feiskyer/codex-settings --skill code-simplifier -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-simplifier, .gemini/skills/code-simplifier, .github/skills/code-simplifier and .opencode/skills/code-simplifier in your project.
What does Code Simplifier need to run?
SKILL.md names no scripts, command-line tools or credentials: Code Simplifier is instructions for the agent only.
Does Code Simplifier 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 Code Simplifier 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 Code Simplifier use?
Code Simplifier 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 Code Simplifier use?
About 521 tokens (SKILL.md is roughly 2.1k 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 Code Simplifier?
Skills that share tags, products or a category with Code Simplifier: Ponytail (DavidObando/gsharp, 564 stars), Ponytail Review (kortix-ai/suna, 20k stars), Code Simplification for ego-lite (citrolabs/ego-lite, 17k stars) and Refactor Pass for Simplicity (star-history/star-history, 9.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Code Simplifier?
feiskyer (a GitHub user) maintains it in feiskyer/codex-settings, which has 244 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on September 27, 2026.
Source: feiskyer/codex-settings on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.