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Skills That Load When Needed
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4. Optional: Extensions · 2 of 4
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Orient
Anatomy, triggering, and cost
Fix the skill that never fires
Predict
Write a skill from something you keep retyping
Close
Practice
Related
Skills That Load When Needed
Intermediate
☆
📑
A SKILL.md is a folder, a description, and a body — the description does most of the work
Orient
Anatomy, triggering, and cost
Fix the skill that never fires
Predict
Write a skill from something you keep retyping
Close
Practice
Related
Practice activities and scenarios are optional. Mark the lesson complete after reading, and return to practice whenever it helps.
Restoring your saved work…
07
Optional practice
🧠 Optional scenario practice
Q1
A skill exists but Claude never loads it automatically. What is the first thing to fix?
A
Move it from .claude/skills/ to ~/.claude/skills/
B
Rewrite the description to state what it does and when to use it, leading with the key use case
C
Make the body longer so Claude has more to match against
D
Add allowed-tools to the frontmatter
Q2
Why keep a SKILL.md body short even though it loads only on demand?
A
Long files are rejected by the parser
B
Once loaded, the body stays in context across turns, so every line is a recurring token cost
C
Skills over 100 lines cannot be invoked with a slash command
D
Short skills are matched more often by the description
08
Up Next
Advanced
Hooks and Guarantees
Intermediate
MCP Without the Sprawl
Advanced
Subagents and Context Isolation
📝 Notes
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