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skill-creator

Create and refine Claude skills with SKILL.md frontmatter and eval prompts.

241|31|Updated Mar 28, 2026
Search Tags:#skill development#claude#iteration#frontmatter#prompt-engineering#skill-creator#evals
One-click install
npx skills add https://github.com/rayxuln/hastur-operation-plugin --skill skill-creator-rayxuln
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: skill-creator
Source: https://github.com/rayxuln/hastur-operation-plugin/tree/main/.claude/skills/skill-creator
Command: npx skills add https://github.com/rayxuln/hastur-operation-plugin --skill skill-creator-rayxuln

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires pyyaml.

What problem does it solve?

This Skill guides users through crafting, validating, and iterating Claude skills. It helps capture intents, draft SKILL.md, and structure eval loops to measure and improve skill performance.

Core Features & Use Cases

  • Structured skill creation: Define intent, trigger criteria, and frontmatter for new skills.
  • Iterative improvement: Run evals, analyze results, and rewrite SKILL.md and descriptions.
  • Workflow automation: Orchestrates test prompts, baseline comparisons, and reporting to accelerate skill maturation.
  • Documentation scaffolding: Provides templates and guidance for SKILL.md, eval schemas, and references.

Quick Start

Use this guide to draft a new skill from concept to a testable SKILL.md and a minimal set of evals, then iterate to improve.

Frequently Asked Questions about skill-creator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a Claude skill from scratch?▼

Creating a Claude skill involves defining its intent, setting trigger criteria, and writing SKILL.md frontmatter. This workflow provides templates and structured guidance to scaffold the documentation and move from concept to a testable skill.

What is the best way to test and improve Claude skills?▼

Iterative evaluation loops are the best way to improve Claude skills. By running test prompts, analyzing results against baselines, and rewriting SKILL.md, you can measure performance and achieve robust skill triggering.

Do I need pyyaml to develop and iterate on Claude skills?▼

Yes, pyyaml is required. It is the necessary dependency for parsing and managing the YAML frontmatter in SKILL.md files during the skill creation and iteration workflow.

What should be included in SKILL.md frontmatter for prompt engineering?▼

SKILL.md frontmatter should include the skill's intent, trigger criteria, and descriptive metadata. Properly structuring this frontmatter ensures Claude can accurately identify when to apply the skill and execute the task correctly.

How does structured eval prompt design help with Claude skill development?▼

Structured eval prompt design helps Claude skill development by providing a consistent baseline to measure performance. It enables you to orchestrate test prompts, compare results, and automate reporting to accelerate skill maturation.

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