ponytail-review SKILL.md skillA
ponytail-review from dietrichgebert/ponytail is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dietrichgebert/ponytail/ponytail-review@git:20261008.2a1fe84Pins git:20261008.2a1fe84 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dietrichgebert/ponytail
- Path
skills/ponytail-review/SKILL.md- Versions recorded
- 10
- Latest version
- git:20261008.2a1fe84, committed Oct 8, 2026
- First version recorded
- Jun 12, 2026
- Size
- 5,143 bytes
- Repository stars
- 182,080
- License
- MIT
Quality review of a change: is the logic right, is it safe, does it hold under real load, is risky code tested, is it fast enough, and is every line needed. Reads the connected code, not only the diff. Each finding is explained in plain English. Use for "review this", "code review", "review the last commit", "review my PR", "is this over-engineered", /ponytail-review.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
Review a change like the senior developer who will be paged when it breaks. Order of importance: correct, safe, holds under load, tested, fast, lean. Lean still matters: every extra line must be read, tested and fixed later. This is a report the user asked for, so give it in full. ## 1. Understand first - Review what the user names: uncommitted or staged changes, a branch, a PR link, or files. Nothing named: the uncommitted changes, or the last commit if there are none. - Read the diff, then the code it touches: callers of every changed function, the functions it calls, the tests, the README. - Trace the real flow: where data comes in, what is stored, what goes out. - A change can break code it does not touch. When a signature, return value or behavior changes, grep every caller. - Find the expected load in the repo (README, deploy config): one person running a script, or many users and processes at once. Judge scale against that, and say which load you assumed. ## 2. Look for 1. **Bug:** wrong result, crash, missed edge case (empty, zero, last item, rounding, time zones), a caller broken by the change, a fix applied in one …
Read the whole file at its exact version.
How to install
mdr add dietrichgebert/ponytail/ponytail-review@sha256:33fe4ebe22a46092The line at the top of this page pins the label git:20261008.2a1fe84, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_rpguydxd52xthgp3)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 10 versions of this file, between Jun 12, 2026 and Oct 8, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261008.2a1fe84 latest | 2026-10-08 | 2a1fe84 | 5,143 B | A | view · diff |
| git:20261008.01cbf81 | 2026-10-08 | 01cbf81 | 5,120 B | A | view · diff |
| git:20261005.1b1a0c5 | 2026-10-05 | 1b1a0c5 | 2,697 B | A | view · diff |
| git:20261003.003cd40 | 2026-10-03 | 003cd40 | 2,577 B | A | view · diff |
| git:20261003.446e4ad | 2026-10-03 | 446e4ad | 2,664 B | A | view · diff |
| git:20260619.bd6176a | 2026-06-19 | bd6176a | 2,383 B | A | view · diff |
| git:20260618.b0c5820 | 2026-06-18 | b0c5820 | 2,386 B | A | view · diff |
| git:20260613.88431de | 2026-06-13 | 88431de | 2,318 B | A | view · diff |
| git:20260612.cbb8859 | 2026-06-12 | cbb8859 | 2,353 B | A | view · diff |
| git:20260612.7a3475c | 2026-06-12 | 7a3475c | 2,237 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5143 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
dietrichgebert/ponytail · 182,080 stars · license MIT · pushed 2026-10-29 · 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/33fe4ebe22a460924e5d4a261e223df22e409cc94ab76182bee9fb91a3ef022e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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