skill-creator SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 27 indexed copies. Same content hash, so the same checks give both the same grade.

skill-creator from anthropics/claude-plugins-official is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add anthropics/claude-plugins-official/skill-creator@git:20260423.2a40fd2

Pins git:20260423.2a40fd2 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

anthropics/claude-plugins-official

Path

plugins/skill-creator/skills/skill-creator/SKILL.md

Versions recorded

3

Latest version

git:20260423.2a40fd2, committed Apr 23, 2026

First version recorded

Feb 18, 2026

Size

33,168 bytes

Repository stars

43,118

License

Apache-2.0

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

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

A skill for creating new skills and iteratively improving them.

At a high level, the process of creating a skill goes like this:

- Decide what you want the skill to do and roughly how it should do it
- Write a draft of the skill
- Create a few test prompts and run claude-with-access-to-the-skill on them
- Help the user evaluate the results both qualitatively and quantitatively
  - While the runs happen in the background, draft some quantitative evals if there aren't any (if there are some, you can either use as is or modify if you feel something needs to change about them). Then explain them to the user (or if they already existed, explain the ones that already exist)
  - Use the `eval-viewer/generate_review.py` script to show the user the results for them to look at, and also let them look at the quantitative metrics
- Rewrite the skill based on feedback from the user's evaluation of the results (and also if there are any glaring flaws that become apparent from the quantitative benchmarks)
- Repeat until you're satisfied
- Expand the test set and try again at larger scale
…

Read the whole file at its exact version.

How to install

mdr add anthropics/claude-plugins-official/skill-creator@sha256:dcd4803e61e913e6

[![mdr](https://markdownregistry.com/badge/art_yogibqn23p3hlktx.svg)](https://markdownregistry.com/a/art_yogibqn23p3hlktx)

Versions

The registry has recorded 3 versions of this file, between Feb 18, 2026 and Apr 23, 2026, about one every 32 days.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_yogibqn23p3hlktx
GET https://markdownregistry.com/api/v1/resolve?ref=anthropics/claude-plugins-official/skill-creator
GET https://markdownregistry.com/api/v1/blob/dcd4803e61e913e6fc27294184cd3a71f09f5e924ff20c8a9a20173e7b3c2bcf

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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