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Creates and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists.
Passed 19 of 22 test cases with the skill, and 12 of 22 without it.
and 6 more in the full report
7 fixed12 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.
Draft the frontmatter block for a new skill named 'Git Commit Helper'. A team member suggested setting the name field to 'Git_Commit_Helper' or 'git commit helper'. Provide the corrected YAML frontmatter.
| Checked | Without skill | With skill |
|---|---|---|
| The name field in the frontmatter uses lowercase alphanumeric characters separated by hyphens. | Missed | Passed |
The instructions your model reads when the skill loads.
You are authoring a SKILL.md for an AI coding agent. A well-written skill provides clear, actionable guidance that agents can follow consistently.
A skill's description triggers it; the body teaches it.
The description tells the agent WHEN to use the skill. The content tells the agent HOW to execute it.
---
name: [lowercase-hyphenated-name]
description: [Concrete actions + "Use when..." clause]
version: [Semantic version]
triggers:
- [keyword 1]
- [keyword 2]
tags:
- [tag 1]
---
# [Skill Title]
[Introduction paragraph explaining purpose]
## Core Principle
**[Single most important rule in bold]**
## [Main Content Sections]
## [Decision Points]
## [Verification Checklist]
test cases passed, vs 12 / 22 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.