Ponytail
DavidObando/gsharp
Forces the laziest solution that actually works, simplest, shortest, most minimal.
Simplify code for clarity while preserving exact behavior — reduce nesting, split long functions, remove redundancy and dead code, and fix unclear names.
Install Code Simplification
$ npx skills add HangYu8123/mini-harness --skill code-simplification -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install HangYu8123/mini-harness code-simplification --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/HangYu8123/mini-harness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/code-simplification .claude/skills/code-simplification && 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-simplification" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/code-simplification into .claude/skills/code-simplification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplification", 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/HangYu8123/mini-harness/tree/main/skills/code-simplificationType 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 HangYu8123/mini-harness --skill code-simplification -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install HangYu8123/mini-harness code-simplification --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/code-simplification .agents/skills/code-simplification && 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-simplification" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/code-simplification into .agents/skills/code-simplification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplification", 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 HangYu8123/mini-harness --skill code-simplification -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install HangYu8123/mini-harness code-simplification --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/code-simplification .cursor/skills/code-simplification && 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-simplification" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/code-simplification into .cursor/skills/code-simplification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplification", 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/HangYu8123/mini-harness.git --path skills/code-simplification--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 HangYu8123/mini-harness --skill code-simplification -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install HangYu8123/mini-harness code-simplification --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/code-simplification .gemini/skills/code-simplification && 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-simplification" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/code-simplification into .gemini/skills/code-simplification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplification", 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 HangYu8123/mini-harness code-simplificationInstalls 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 HangYu8123/mini-harness --skill code-simplification -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/code-simplification .github/skills/code-simplification && 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-simplification" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/code-simplification into .github/skills/code-simplification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplification", 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 HangYu8123/mini-harness --skill code-simplification -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install HangYu8123/mini-harness code-simplification --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/code-simplification .opencode/skills/code-simplification && 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-simplification" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/code-simplification into .opencode/skills/code-simplification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-simplification", 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-simplification- GitHub stars
- 199
- Token cost
- ~1.2k tokens
- SKILL.md length
- 682 words
- Files
- 1
- Skills in repo
- 8
- Repo updated
- First seen
- Licence
- None found
At a glance
Simplify code for clarity while preserving exact behavior — reduce nesting, split long functions, remove redundancy and dead code, and fix unclear names.
- Works in 6 steps: Preserve behavior exactly. Same output… → Understand before touching (Chesterton's… → Match the project's conventions, not… → …
- Tasks that involve Code simplification
- SKILL.md covers Your job, Intake, Rules and What to look for, plus 2 more sections
- Calls git
What it does
Code Simplification is an agent skill from HangYu8123/mini-harness. Simplify code for clarity while preserving exact behavior — reduce nesting, split long functions, remove redundancy and dead code, and fix unclear names. TRIGGER: invoked by a mini-harness skill's review stage when the dial simplify=local is set. Not a planning-time skill.
Its SKILL.md is about 1.2k 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 Development, covering Code simplification. The repository describes itself as: A local minimized harness, with simplified output and logs for self-evolve.
When your agent uses it
- Tasks that involve Code simplification
Example prompts
- “/code-simplification”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Preserve behavior exactly. Same output for every input, same error behavior, same side
- Understand before touching (Chesterton's Fence). Know what the code is responsible for,
- Match the project's conventions, not your preferences — imports, naming, error handling,
- Comprehension speed is the goal, not line count. A one-line nested ternary is not simpler
- Don't over-simplify. Inlining a helper that gave a concept its name, merging two simple
- One change at a time. Apply, re-run the tests, keep or revert. Batching untested edits
What it can do on your machine
Read from SKILL.md and the folder at commit baa821f. 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
Shell commands in SKILL.md call:
git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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 Simplification loads about 1.2k tokens when it runs. Until then it costs about 74 tokens; SKILL.md has 682 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 682 words (~1,225 tokens).
“The platform-independent alternative to Claude Code's native /simplify. An mh-* skill's review stage spawns the implementer with this file when the dial simplify=local is set — see .harness/harness.md §5 for how it is launched.”
- name
- code-simplification
- disable-model-invocation
- true
Files
Just SKILL.md in skills/code-simplification of HangYu8123/mini-harness.
Open the folder on GitHubat commit baa821f
Compare with similar skills
Code Simplification 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 Simplification this skillHangYu8123/mini-harness | 199 | — | ~1.2k | Automated safety check: Pass | None | |
| 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 Simplification
What does Code Simplification do?
Simplify code for clarity while preserving exact behavior — reduce nesting, split long functions, remove redundancy and dead code, and fix unclear names. Code Simplification is an agent skill from HangYu8123/mini-harness. Simplify code for clarity while preserving exact behavior — reduce nesting, split long functions, remove redundancy and dead code, and fix unclear names.
When should I use Code Simplification?
Code Simplification fits situations like: tasks that involve Code simplification.
How do I install Code Simplification in Claude Code?
Run `npx skills add HangYu8123/mini-harness --skill code-simplification -a claude-code`. Or copy the skill folder (skills/code-simplification in HangYu8123/mini-harness) into .claude/skills/code-simplification in your project. Claude Code loads it when a task matches its description.
How do I install Code Simplification in Codex?
Run `npx skills add HangYu8123/mini-harness --skill code-simplification -a codex`. Or copy the skill folder (skills/code-simplification in HangYu8123/mini-harness) into .agents/skills/code-simplification in your project. Codex loads it when a task matches its description.
Can I use Code Simplification 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 HangYu8123/mini-harness --skill code-simplification -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-simplification, .gemini/skills/code-simplification, .github/skills/code-simplification and .opencode/skills/code-simplification in your project.
What does Code Simplification need to run?
Going by SKILL.md and its folder, Code Simplification needs the command-line tools its instructions call (git).
Does Code Simplification access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Code Simplification 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 Simplification use?
No licence was found for Code Simplification or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Code Simplification use?
About 1.2k tokens (SKILL.md is roughly 4.9k 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 Simplification?
Skills that share tags, products or a category with Code Simplification: 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 Simplification?
HangYu8123 (a GitHub user) maintains it in HangYu8123/mini-harness, which has 199 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on September 22, 2026.
Source: HangYu8123/mini-harness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.