writing-skills SKILL.md skillA

writing-skills from toongri/oh-my-toong-playground is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add toongri/oh-my-toong-playground/writing-skills@git:20260731.218dcfe

Pins git:20260731.218dcfe in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
toongri/oh-my-toong-playground
Path
skills/writing-skills/SKILL.md
Versions recorded
2
Latest version
git:20260731.218dcfe, committed Jul 31, 2026
First version recorded
Jul 18, 2026
Size
26,563 bytes
Repository stars
25
License
MIT

Use when creating new skills, editing existing skills, or verifying skills work before deployment.

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

# Writing Skills

## Overview

**Writing skills IS Test-Driven Development applied to process documentation.**

**Personal skills live in your runtime's skills directory** 

You write test cases (pressure scenarios with subagents), watch them fail (baseline behavior), write the skill (documentation), watch tests pass (agents comply), and refactor (close loopholes).

**Core principle:** If you didn't watch an agent fail without the skill, you don't know if the skill teaches the right thing.

**REQUIRED BACKGROUND:** You MUST understand test-driven-development before using this skill. That skill defines the fundamental RED-GREEN-REFACTOR cycle. This skill adapts TDD to documentation.

**Official guidance:** For Anthropic's official skill authoring best practices, see anthropic-best-practices.md. This document provides additional patterns and guidelines that complement the TDD-focused approach in this skill.

## What is a Skill?

A **skill** is a reference guide for proven techniques, patterns, or tools. Skills help future agents find and apply effective approaches.

**Skills are:** Reusable techniques, patterns, tools, reference guides
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add toongri/oh-my-toong-playground/writing-skills@sha256:21991a49868db6ac

The line at the top of this page pins the label git:20260731.218dcfe, 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_rommdoct5y4kwecd.svg)](https://markdownregistry.com/a/art_rommdoct5y4kwecd)

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

Versions

The registry has recorded 2 versions of this file, between Jul 18, 2026 and Jul 31, 2026, about one every 13 days.

versioncommittedcommitsizeaudit
git:20260731.218dcfe latest2026-07-31 218dcfe 26,563 BA view · diff
git:20260718.46d3ea42026-07-18 46d3ea4 26,330 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 (26563 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

toongri/oh-my-toong-playground · 25 stars · license MIT · pushed 2026-10-22 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rommdoct5y4kwecd
GET https://markdownregistry.com/api/v1/resolve?ref=toongri/oh-my-toong-playground/writing-skills
GET https://markdownregistry.com/api/v1/blob/21991a49868db6ac3142d321d0863a0bf3c6cc1e22dd7f94fd088b676c68d709

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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