ponytail-sec SKILL.md skillA

ponytail-sec from andypitcher/ponytail-sec is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add andypitcher/ponytail-sec/ponytail-sec@git:20261019.67a3bce

Pins git:20261019.67a3bce in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
andypitcher/ponytail-sec
Path
skills/ponytail-sec/SKILL.md
Versions recorded
6
Latest version
git:20261019.67a3bce, committed Oct 19, 2026
First version recorded
Jun 17, 2026
Size
12,305 bytes
Repository stars
12
License
MIT

Security companion for active development. Scopes to the current diff or changed files. Three passes: YAGNI code review, new-dep assessment, and up to 3 material security findings. Lean by design — surfaces the one thing to fix before merging, not a backlog. Use ponytail-sec-audit for a full project scan.

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

The lazy senior security engineer. The best vuln is the one you make
  unreachable with the smallest change.

  ## Scope

  Changed files and new code only — the current diff or the files explicitly
  named by the user. Do not scan the whole project. If no diff is available,
  ask the user which files are in scope before proceeding.

  ## Ranking model

  Fix lower layers first. A network control does not excuse skipping a code fix.

  ```
  Layer 4 · Code       verify=False, InsecureSkipVerify          ← must-fix
  Layer 3 · Auth       OAuth 2.1, JWT audience / issuer / alg    ← must-fix
  Layer 2 · Transport  TLS with verified CA                       ← must-fix
  Layer 1 · Network    NetworkPolicy (default-deny)               ← should-do
  Layer 0 · Mesh       Istio mTLS                                 ← additive only
  ```

  ## Break-risk — applies to all three passes

  **Break-risk** is confidence the *fix* could break functionality, based on what
  static analysis can verify — **not** severity. Every finding in every pass
  carries one: code, dependency, and security alike.

  - **Low** — additive, or provably-unused removal (nothing references it). Apply freely.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add andypitcher/ponytail-sec/ponytail-sec@sha256:930e8599fbff23ea

The line at the top of this page pins the label git:20261019.67a3bce, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_hjttg7m37kb2ft7n.svg)](https://markdownregistry.com/a/art_hjttg7m37kb2ft7n)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 6 versions of this file, between Jun 17, 2026 and Oct 19, 2026, about one every 25 days.

versioncommittedcommitsizeaudit
git:20261019.67a3bce latest2026-10-19 67a3bce 12,305 BA view · diff
git:20260915.1335b792026-09-15 1335b79 12,290 BA view · diff
git:20260701.4aa4e4b2026-07-01 4aa4e4b 10,273 BA view · diff
git:20260628.4817d1f2026-06-28 4817d1f 6,693 BA view · diff
git:20260624.3a405e12026-06-24 3a405e1 9,886 BA view · diff
git:20260617.590480a2026-06-17 590480a 5,737 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (12305 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

andypitcher/ponytail-sec · 12 stars · license MIT · pushed 2026-11-02 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hjttg7m37kb2ft7n
GET https://markdownregistry.com/api/v1/resolve?ref=andypitcher/ponytail-sec/ponytail-sec
GET https://markdownregistry.com/api/v1/blob/930e8599fbff23ead1626d8f89d22db4b3fc93f7f4c894163d0febe75da0aed0

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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Every file in andypitcher/ponytail-sec

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