sota-skill-security SKILL.md skillA

sota-skill-security from martinholovsky/sota-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add martinholovsky/sota-skills/sota-skill-security@git:20261024.8dd2b0a

Pins git:20261024.8dd2b0a in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
martinholovsky/sota-skills
Path
skills/sota-skill-security/SKILL.md
Versions recorded
5
Latest version
git:20261024.8dd2b0a, committed Oct 24, 2026
First version recorded
Sep 6, 2026
Size
9,206 bytes
Repository stars
26
License
CC-BY-4.0

Security for AI agent skills, plugins and instruction bundles (2026) — the supply chain of things that tell an agent what to do. Use when installing, authoring, reviewing, updating or auditing any skill, plugin, ruleset or agent file an agent loads as instructions, including your own; when a repository you do not fully trust contains agent-readable instruction files; and when deciding what an installed skill may reach. Covers provenance and pinning, review-before-install, the instruction trust…

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

# SOTA Skill & Instruction-Bundle Security (2026)

## Purpose

A skill is **executable influence**. It does not run in the interpreter, it runs in
the model — and the model then runs the tools. Everything the software supply chain
learned about dependencies applies to instruction bundles, with one difference that
makes it worse: **a malicious dependency's code has to run — at install, import or
call — and a malicious skill only has to be loaded**; some skills also run shell
commands the moment they are invoked ([`rules/02`](rules/02-trust-boundary-and-capability.md) §1).

This skill exists because the ecosystem now has all the ingredients of a supply
chain — marketplaces, plugins, `git clone` installs, auto-loading descriptions,
transitive resources — and almost none of the controls. A library that tells
everyone else to pin, verify provenance, and minimise capability, while installing
its own instructions by curl, has not noticed it is a supply chain.

**The trust boundary is the point.** Anyone who can modify a file your agent loads
as instructions can change what your agent does, in every session, silently. That
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add martinholovsky/sota-skills/sota-skill-security@sha256:e5d95de6ddc46e3a

The line at the top of this page pins the label git:20261024.8dd2b0a, 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_lr5botu2hdl2tsrl.svg)](https://markdownregistry.com/a/art_lr5botu2hdl2tsrl)

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

Versions

The registry has recorded 5 versions of this file, between Sep 6, 2026 and Oct 24, 2026, about one every 12 days.

versioncommittedcommitsizeaudit
git:20261024.8dd2b0a latest2026-10-24 8dd2b0a 9,206 BA view · diff
git:20261012.ae1b29b2026-10-12 ae1b29b 8,965 BA view · diff
git:20260926.5e966452026-09-26 5e96645 7,858 BA view · diff
git:20260911.9cd2dc72026-09-11 9cd2dc7 7,742 BA view · diff
git:20260906.b3ca4bb2026-09-06 b3ca4bb 7,506 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 (9206 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

martinholovsky/sota-skills · 26 stars · license CC-BY-4.0 · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lr5botu2hdl2tsrl
GET https://markdownregistry.com/api/v1/resolve?ref=martinholovsky/sota-skills/sota-skill-security
GET https://markdownregistry.com/api/v1/blob/e5d95de6ddc46e3a0240842a0448315cf3553f356cbf66ee4f02e5f26cb49e8a

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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