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Module
Module 3 of 5Lesson 1 of 4~12 min

Write a description that triggers at the right moment

A poorly described skill stays silent when you need it or shows up where it has no business. This lesson teaches you to name and describe your skill so it answers the right requests, to check how it triggers in real conditions and to decide who is allowed to launch it.

Take this lesson: your first course is freeSee the full syllabus

Lesson objective

By the end of this lesson, you will be able to write a skill's name and description so that it triggers on the right requests and not on others, and choose who can invoke it (Claude, you, or both).

Topics covered

  • skill description
  • skill triggering
  • Claude Skills
  • invocation
  • SKILL.md

Where it fits

Design and write your skill

How do I write a skill that triggers at the right moment, produces a checkable result and has only the permissions it needs?

Lessons in this module

  1. Write a description that triggers at the right moment (this lesson)
  2. Scope your skill before writing it
  3. Write the SKILL.md and install it
  4. A skill's tools and permissions

What you will learn in this module

This lesson is part of the course Build reliable Claude Skills for your product work

  • Write a name and description that trigger the skill at the right moment, and choose who can invoke it.
  • Design a complete SKILL.md (frontmatter, checkable rules, procedure, output format, reference files) from a scoping brief.
  • Configure a skill's pre-approved and removed tools according to risk, without confusing pre-approval with restriction.

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