What problem does it solve? Creating a well-structured Agent skill requires knowing the SKILL.md frontmatter spec, directory conventions, and packaging rules. This Skill guides the entire lifecycle of authoring a new skill so the output passes validation and works with progressive-disclosure agent platforms. ## Core Features & Use Cases - Skill Scaffolding: Runs init_skill.py to generate a complete skill directory with a SKILL.md template plus example scripts/, references/, and assets/ folders. - Authoring Guidance: Provides design principles for concise SKILL.md bodies, frontmatter descriptions, and progressive disclosure patterns, with references for workflow and output patterns. - Validation & Packaging: Runs package_skill.py to validate frontmatter, naming conventions, and description quality, then bundles the skill into a distributable .skill zip file. - Use Case: Ask the agent to create a new skill for processing Excel files; it scaffolds the directory, drafts the SKILL.md with proper frontmatter, and packages a validated .skill file ready for distribution. ## Quick Start Create a new skill named excel-cleaner in my skills directory and package it for distribution.