Skill Creator

Overview

A skill is a folder that teaches Claude how to handle a specific task or workflow. Skills are an open standard — the same skill folder works across Claude.ai, Claude Code, and the Messages API (via container.skills).

Two types (claude-code-setup harness convention):

• Command skills — invoked explicitly via /skill-name (e.g. /deploy-staging)
• Context skills — auto-loaded when the project's Tech Stack matches (e.g. standards-python loads for Python projects)

The type/applies_to/file_extensions fields are harness extensions specific to claude-code-setup. For pure Anthropic-spec skills (Claude.ai or API upload), see references/02-frontmatter.md → "Harness-specific fields".

This skill walks the user through an 8-step interactive flow for creating a new skill. It is also useful for reviewing an existing skill (see references/07-troubleshooting.md → "Escalation path") or fixing one that doesn't trigger properly.

By default, created skills save to ~/.claude/custom/skills/<name>/, survive claude-code-setup upgrades, and are discovered by the harness. For Claude.ai or API distribution, see references/09-distribution.md.

Critical rules (always)