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skill-creator SKILL.md skillA

skill-creator from bruc3van/agent-skills-guard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add bruc3van/agent-skills-guard/skill-creator@git:20260608.9f59278

Pins git:20260608.9f59278 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: bruc3van/agent-skills-guard
Path: test/test-skills/positive-real/codex-system-skill-creator/SKILL.md
Versions recorded: 1
Latest version: git:20260608.9f59278, committed Jun 8, 2026
Size: 22,047 bytes
Repository stars: 392
License: MIT

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, or tool integrations.

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

# Skill Creator

This skill provides guidance for creating effective skills.

## About Skills

Skills are modular, self-contained folders that extend Codex's capabilities by providing
specialized knowledge, workflows, and tools. Think of them as "onboarding guides" for specific
domains or tasks—they transform Codex from a general-purpose agent into a specialized agent
equipped with procedural knowledge that no model can fully possess.

### What Skills Provide

1. Specialized workflows - Multi-step procedures for specific domains
2. Tool integrations - Instructions for working with specific file formats or APIs
3. Domain expertise - Company-specific knowledge, schemas, business logic
4. Bundled resources - Scripts, references, and assets for complex and repetitive tasks

## Core Principles

### Concise is Key

The context window is a public good. Skills share the context window with everything else Codex needs: system prompt, conversation history, other Skills' metadata, and the actual user request.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add bruc3van/agent-skills-guard/skill-creator@sha256:da44c88f6b3845a8

The line at the top of this page pins the label git:20260608.9f59278, 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](https://markdownregistry.com/badge/art_wbqe7ai7e2yvzdkc.svg)](https://markdownregistry.com/a/art_wbqe7ai7e2yvzdkc)

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

Versions

The registry has recorded 1 version of this file, committed on Jun 8, 2026.

version	committed	commit	size	audit
git:20260608.9f59278 latest	2026-06-08	9f59278	22,047 B	A	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 (22047 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

bruc3van/agent-skills-guard · 392 stars · license MIT · pushed 2026-09-26 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_wbqe7ai7e2yvzdkc
GET https://markdownregistry.com/api/v1/resolve?ref=bruc3van/agent-skills-guard/skill-creator
GET https://markdownregistry.com/api/v1/blob/da44c88f6b3845a8fa8c60792ec9a722110a55a9793c279757b48fefb11f819c

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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