# Ponytail Review (agent skill)

> Ponytail Review is an agent skill (a SKILL.md file) from DietrichGebert/ponytail. Code review focused exclusively on over-engineering. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 156,966 GitHub stars across a repository of 3 listed skills.

Code review focused exclusively on over-engineering. Finds what to delete: reinvented standard library, unneeded dependencies, speculative abstractions, dead flexibility. One line per finding: location, what to cut, what replaces it. Use when the user says "review for over-engineering", "what can we delete", "is this over-engineered", "simplify review", or invokes /ponytail-review. Complements correctness-focused review, this one only hunts complexity. Review diffs for unnecessary complexity.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/DietrichGebert/ponytail |
| Skill path | skills/ponytail-review/SKILL.md |
| Skill name | ponytail-review |
| GitHub stars | 156,966 |
| Installs on skills.sh | 813 |
| License | MIT |
| Skills in repo | 3 |
| Plugin marketplace | ponytail |
| Official | no |
| Works with | Claude Code, Codex, Cursor, GitHub Copilot, OpenCode |
| Category | Coding |
| Last commit | Oct 5, 2026 |

## When it triggers

- used exclusively on over-engineering.
- Use when the user says "review for over-engineering", "what can we delete", "is this over-engineered", "simplify review", or invokes /ponytail-review.
- "review for over-engineering"
- "what can we delete"
- "is this over-engineered"
- "simplify review"

## Add this skill

### Claude Code

```sh
/plugin marketplace add DietrichGebert/ponytail
/plugin install ponytail@ponytail
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/DietrichGebert/ponytail.git
cp -r ponytail/skills/ponytail-review .agents/skills/ponytail-review   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/DietrichGebert/ponytail.git
cp -r ponytail/skills/ponytail-review .cursor/skills/ponytail-review   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

skills.sh listing: https://www.skills.sh/DietrichGebert/ponytail/ponytail-review

---

Canonical page: https://appsgit.com/skills/dietrichgebert-ponytail-review
Source: appsgit (https://appsgit.com), the app store for github. Data from the GitHub API, refreshed nightly.
Machine access: JSON API https://appsgit.com/api/v1/apps (OpenAPI: https://appsgit.com/openapi.json), MCP server https://mcp.appsgit.com/mcp, full index https://appsgit.com/llms-full.txt.