Skills 2.0 Upgrade

Overview

Skills 2.0 is Anthropic's 2026 skill framework built on Progressive Disclosure:

1. Frontmatter — fast routing and discovery
2. SKILL.md — working guide (<500 lines)
3. references/ — heavy detail loaded on demand

With 351K+ published skills, clean structure directly impacts discoverability, token efficiency, and cross-tool portability.

When to Use