Learn › Claude Code: Custom Skills
Intermediate

Claude Code: Custom Skills

Build reusable skills that extend what Claude can do — from your first SKILL.md file to dynamic context injection, argument substitution, subagent execution, and sharing via GitHub. Level 5 of the Claude Code curriculum.

📚 11 lessons 🕐 138 min total ✓ Free
01
The Repeated-Instructions Problem
🕐 12 min
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02
Your First Skill
🕐 13 min
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03
Dynamic Context Injection
🕐 13 min
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04
Arguments and Substitution
🕐 12 min
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05
Invocation Control
🕐 13 min
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06
Running Skills in Subagents
🕐 13 min
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07
Frontmatter Deep Dive
🕐 13 min
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08
Supporting Files and Scripts
🕐 13 min
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09
Project Skills and GitHub Sharing
🕐 13 min
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10
Evaluating Skills with skill-creator
🕐 12 min
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11
Building Your Personal Skills Toolkit
🕐 11 min
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Start Lesson 1 →
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Online lessons always free · PDF includes personal & educational use license