Official · by Anthropic
Skill creator Claude skill
The Skill creator skill lets an AI assistant build, modify, and assess the performance of other skills.
- Apache-2.0 licence
- ★ 182,168 on GitHub (whole repository)
- Verified against its source 19 Oct 2026
What the Skill creator skill does
It enables the assistant to write new skills from the ground up and revise or enhance existing ones. It can also execute evaluations to test a skill, measure its performance with variance analysis, and fine-tune a skill's description so it triggers more accurately. It applies when users aim to construct, change, or refine a skill.
What it covers
- Creating a new skill from scratch
- Modifying and improving existing skills
- Running evals to test a skill
- Benchmarking skill performance with variance analysis
- Optimizing a skill's description for triggering accuracy
How to install it
In Claude Code
/plugin marketplace add anthropics/skills/plugin install example-skills@anthropic-agent-skills