Writing a SKILL.md is one thing. Getting it ready to install, distribute, or list on a marketplace is another. Skill Builder handles the packaging side: the correct directory structure, a README with install instructions, marketplace-ready listing copy (short description, long description, tags), and a verified zip that installs cleanly. It also generates listing copy for Agensi and SkillsMP — not marketing language, just plain descriptions of what the skill does and who it's for. The kind of copy that converts because it's accurate, not because it's enthusiastic. Useful for anyone who builds skills regularly and wants a consistent, repeatable packaging process rather than doing it differently each time. Pairs with skill-creator for the full write → test → package → ship loop.

Scaffolds Standard Directories: Automatically creates the required structure including SKILL.md, README, LICENSE, and reference folders.

Marketplace Readiness: Generates SEO-optimized listing copy, short descriptions, and tags tailored for AI skill discovery platforms.

Progressive Disclosure: Implements best practices for skill performance by moving heavy context into reference files to keep the core SKILL.md under 500 lines.

QA and Security: Runs a pre-flight checklist to identify dangerous shell patterns, hardcoded secrets, or PII before you ship.

Why use this skill?

Manual packaging is error-prone. This skill ensures your zip files are structured correctly (folder-wrapped), your READMEs include standardized installation steps for Claude Code and Cursor, and your skill descriptions are concise and professional. It bridges the gap between "a prompt that works for me" and "a product I can share."