dietrichgebert/ponytail · skills/ponytail-review/SKILL.md

ponytail-review skillA

ponytail-review is agent-read markdown (skill) from dietrichgebert/ponytail: 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..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add dietrichgebert/ponytail/ponytail-review@git:20260619.bd6176a
Exact content
mdr add dietrichgebert/ponytail/ponytail-review@sha256:40df33b58fc6ef88

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_rpguydxd52xthgp3.svg)](https://markdownregistry.com/a/art_rpguydxd52xthgp3)

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Versions

versioncommittedcommitsizeaudit
git:20260619.bd6176a latest2026-06-19 bd6176a 2,383 BA view · diff
git:20260618.b0c58202026-06-18 b0c5820 2,386 BA view · diff
git:20260613.88431de2026-06-13 88431de 2,318 BA view · diff
git:20260612.cbb88592026-06-12 cbb8859 2,353 BA view · diff
git:20260612.7a3475c2026-06-12 7a3475c 2,237 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2383 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

dietrichgebert/ponytail · 141,490 stars · license MIT · pushed 2026-09-14 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rpguydxd52xthgp3
GET https://markdownregistry.com/api/v1/resolve?ref=dietrichgebert/ponytail/ponytail-review
GET https://markdownregistry.com/api/v1/blob/40df33b58fc6ef889b93585733feb9566b76e9586efa7f376785c1e995197ac0

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.