Skill Creator Plus

Skill Creator Plus

[](https://yaniv-golan.github.io/skill-creator-plus/install-claude-desktop.html)

[](https://opensource.org/licenses/MIT) [](https://docs.anthropic.com/en/docs/agents-and-tools/claude-code/plugins)

The skill that builds skills. Write a draft, run evals against a baseline, review results in an interactive viewer, improve, and repeat — until your skill actually works. Based on Anthropic's official [`skill-creator`](https://github.com/anthropics/claude-plugins-official) plugin, with bug fixes and best practices baked in.

	Official skill-creator	skill-creator-plus
Best practices guide	—	620+ line Anthropic patterns reference
Script vs. Instruct guidance	—	Decision framework for when to bundle scripts vs. use instructions
Cross-host portability	—	Validates full agentskills.io spec + Claude-specific fields
Claude Code runtime docs	—	2.1.222 listing budget + per-skill degradation order, permission semantics, truncation caps, live-reload behavior
Eval viewer in Cowork	Silent fail on submit	Copyable JSON textarea (fixed)
Description optimizer	Requires separate ANTHROPIC_API_KEY; drifts toward 1,024-char bloat	Uses your existing claude session; length-aware selection + plateau early-stop
Benchmarking script	Silent empty results	Fixed directory handling
Skill type taxonomy	3 broad categories	3 + 9 Anthropic internal types
Pre-packaging checklist	—	Official checklist built in

Why This Over the Built-in?

Anthropic ships a `skill-creator` plug