skill-creator: a Claude Code plugin by Anthropic

Official

For anyone writing Claude skills who wants a guided draft, test and improve loop. Skip it if you only need a one-off prompt.

Copy install command View the source

Score: 76of 100
Rank: #18of 25
Updated: Nov 102026

Install

/plugin install skill-creator@claude-plugins-official

Type it in Claude Code. View the source

skill-creator is also listed as a skill. See that page

What does skill-creator do?

skill-creator is a Claude Code plugin that installs one skill, skill-creator, which guides you through making and refining Claude skills. It starts by asking what the skill should do, when it should trigger and what output it should give, then writes a SKILL.md. Next it drafts test prompts, runs Claude with the skill on them, and helps you judge the results, including numeric evals shown through its generate_review.py script. It rewrites the skill from your feedback and repeats. It can also benchmark a skill with variance analysis and has a separate step that tunes the skill's description so it triggers at the right times.

When should you use skill-creator?

Use it when

Turning a repeated workflow into a reusable skill
A skill triggers at the wrong times
Measuring whether a skill change made it better

Skip it when

You only need a one-time prompt
You want a finished skill without testing rounds

What it needs and what it can touch

You need

Python, for the bundled review and eval scripts

What it can do

Writes skill files
Runs bundled Python scripts
Runs Claude on test prompts

From reading its instructions, not from running it.

Why it scores 76

Strongest on upkeep (100 of 100), weakest on adoption (61).

Adoption35 points 61
Upkeep20 points 100
Trust20 points 77
Quality15 points We could not read its instructions
Reader answers10 points Not enough answers yet, so this does not count

How the formula works

Details

Stars of the shared plugin repository: 46,718
Last repository change: Nov 10, 2026
License: Not stated
Data confidence: Medium