Skill Creator
Create new skills, improve existing ones and measure how well they trigger and perform.
About Skill Creator
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. Published by Anthropic in the anthropics/skills repository as an Agent Skills package (a folder with a SKILL.md file). Details were read from SKILL.md and the repository README; nothing was installed or executed.
What you can do
- Create a skill from scratch
- Edit and optimize a skill
- Run evals against a skill
- Benchmark with variance analysis
- Tune the description for triggering
Skill package
- Format
- Agent Skills (a folder with SKILL.md)
- Works with
- Claude Code, Claude.ai, Claude API
- Pre-approved tools
- None declared
- License
- Not specified
How to install
From the publisher
Claude Code: run /plugin marketplace add anthropics/skills, then /plugin install example-skills@anthropic-agent-skills. Or copy the skills/skill-creator folder into .claude/skills/ in your project. Claude.ai and the Claude API: upload the skill folder as a custom skill (see the repository README for links).
How do I install Skill Creator?
The publisher’s install steps are shown above. A skill is a folder with a SKILL.md file. Copy that folder into your agent’s skills directory and the agent loads it when a task matches the skill’s description: Claude Code reads .claude/skills/ in the project and ~/.claude/skills/; other agents that support the Agent Skills format document their own location. The file itself is at github.com/anthropics/skills/blob/main/skills/skill-creator/SKILL.md.
Which agents can use Skill Creator?
The publisher lists Claude Code, Claude.ai, Claude API.
Is it free?
Free to use, according to the published details.
Questions and answers
What is Skill Creator?
Skill Creator is a skill in the Developer tools category. Create new skills, improve existing ones and measure how well they trigger and perform.
How do I install Skill Creator?
A skill is a folder with a SKILL.md file. Copy that folder into your agent's skills directory (for Claude Code, .claude/skills/ in the project or ~/.claude/skills/) and the agent loads it when a task matches the skill's description. The file is at https://github.com/anthropics/skills/blob/main/skills/skill-creator/SKILL.md. The publisher's steps: Claude Code: run /plugin marketplace add anthropics/skills, then /plugin install example-skills@anthropic-agent-skills. Or copy the skills/skill-creator folder into .claude/skills/ in your project. Claude.ai and the Claude API: upload the skill folder as a custom skill (see the repository README for links).
Is Skill Creator free?
Free to use, according to the published details.
What can Skill Creator do?
According to the published details: Create a skill from scratch; Edit and optimize a skill; Run evals against a skill; Benchmark with variance analysis; Tune the description for triggering.
Which agents or platforms work with Skill Creator?
The publisher lists Claude Code, Claude.ai, Claude API.
Where is Skill Creator published?
Its homepage is https://github.com/anthropics/skills/tree/main/skills/skill-creator and its source repository is https://github.com/anthropics/skills. RUAGENTIC read these details from Publisher repository on October 1, 2026 and did not install or run the project.
Sources and checks
View the sourceSource information collected October 1, 2026.
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