Copilot Studio now supports Skills as the core way to build agent behavior. With Skills, your agent can load rich logic on demand — only the Skill name and description are preloaded into the context window, while the full skill is fetched only when it runs. Anthropic publishes the Skills collection at https://www.skills.sh. This post covers the skill-creatorskill to help create or modify skills. This Skill helps generate complete SKILL.md packages, including embedded scripts and supporting files.