portable-skills-and-rules

Features and purpose

Defines SKILL.md structure, valid frontmatter fields, and cross-tool setup for Claude Code, Cursor, OpenCode, and Cline. ALWAYS read before creating or editing any SKILL.md file. This skill should be used when "writing a skill", "creating a skill", "editing a skill", "skill frontmatter", "SKILL.md format", "AGENTS.md", "CLAUDE.md", or setting up skills across multiple AI tools.

Quick start

Follow the repository instructions for this skill and your agent. Review the files and dependencies before adding it to your workflow.