Introduction to Agent Skills

A comprehensive, hands-on course on Claude Agent Skills — reusable SKILL.md files that teach Claude a task once so it applies your expertise automatically. Learn what skills are and the agentskills.io open standard, the SKILL.md format and full frontmatter (description, allowed-tools, disable-model-invocation, context: fork, paths), progressive disclosure and multi-file skills, dynamic context injection, how skills are discovered/matched/invoked, scope and precedence (enterprise/personal/project/plugin), skills vs CLAUDE.md vs subagents vs hooks vs MCP, sharing via git/plugins/managed settings, wiring skills into subagents, and troubleshooting. Verified against official Anthropic docs. Free to start.