Ponytail Review

by DietrichGebert

Ponytail Review is a Quality skill for Claude Code, published by DietrichGebert in ponytail.

101.7K stars5.6K forkson DietrichGebert/ponytailAdded 2026/08/13Repository updated 2026/08/07

View source on GitHub Download repo ZIP

agent-skillsai-agentsclaudeclaude-codeclaude-code-plugincursor-rulesdeveloper-toolsllmprompt-engineeringyagni

Install in seconds

Install Ponytail Review

Copy Ponytail Review into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/DietrichGebert/ponytail/tree/main/skills/ponytail-review ~/.claude/skills/ponytail-review

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/DietrichGebert/ponytail.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/ponytail-review/SKILL.md in DietrichGebert/ponytail
Installs to: ~/.claude/skills/ponytail-review
Collection: One of 13 skills cataloged from this repository
Category: Quality — 1354 skills

What Ponytail Review does

Ponytail Review flags over-engineering in code diffs: dead code, reinvented standard library functions, unneeded dependencies, and speculative abstractions. Use it when asking for a simplicity review or 'what can we delete'.

Ponytail Review is cataloged under Quality on DirSkills. Ponytail Review comes from a repository tagged agent-skills, ai-agents, claude, claude-code and claude-code-plugin.

Documentation

README

Excerpt

Review diffs for unnecessary complexity. One line per finding: location, what to cut, what replaces it. The diff's best outcome is getting shorter.

Format

L<line>: <tag> <what>. <replacement>., or <file>:L<line>: ... for multi-file diffs.

Tags:

delete: dead code, unused flexibility, speculative feature. Replacement: nothing.
stdlib: hand-rolled thing the standard library ships. Name the function.
native: dependency or code doing what the platform already does. Name the feature.
yagni: abstraction with one implementation, config nobody sets, layer with one caller.
shrink: same logic, fewer lines. Show the shorter form.

Examples

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Ponytail Review

What else does DietrichGebert publish alongside Ponytail Review?
Ponytail Review is one of 13 skills that DirSkills catalogs from DietrichGebert/ponytail, the repository it ships in. Its siblings there include Caveman, Ponytail and Ponytail. Each one is a separate skill with its own page in this directory, installs the same way Ponytail Review does, and is maintained by DietrichGebert in that same repository. The rest of the collection is listed on the DietrichGebert/ponytail page.
How does Ponytail Review compare to other Quality skills?
Ponytail Review ranks #12 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Ponytail Review against them. Open each page to compare what they document and how they install.