Agent Skills Creator

If you're building skills for Claude, this is the spec guide in executable form. It walks you through the full lifecycle: picking a pattern (simple hub, workflow, rules-based, or mixed), writing frontmatter that actually triggers at the right time, structuring reference files so Claude loads them progressively, and validating against the format specification before you ship. The real value is in the decision trees and the quality checklist, which catch the stuff that breaks skills in practice like reference chains, bloated SKILL.md files, and degrees-of-freedom mismatches. Use it when you're authoring a new skill or debugging why Claude isn't picking up your existing one correctly.

skills.sh installs: 1K
GitHub stars: 191
last updated: Aug 21, 2026

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Install

$ npx -y skills add mblode/agent-skills --skill agent-skills-creator --agent claude-code

Installs into .claude/skills of the current project.

Files

Agent Skills Creator

Create and improve skills in the Agent Skills open format: full lifecycle from pattern selection through validation and README update.

IS: creating new agent skills and auditing or rewriting existing ones: SKILL.md, references, rules folders, scripts, evaluations.
IS NOT: AGENTS.md/CLAUDE.md instruction files (use agents-md) or general documentation quality (use ghostwriter).