Use when creating new skills, editing existing skills, auditing skill quality, converting skills to markdown conventions, or verifying skills before deployment. Triggers include skill authoring requests, skill review needs, or "the skill doesn't work" complaints.
SkillScore71Maintained
Automatic
◆AI Engineer pack
Last verified 8/30/2026
What it changes
Passed 13 of 19 test cases with the skill, and 10 of 19 without it.
Without skill54%
With skill71%
Checks it passed that the model alone missed
Selects Create mode for the execution workflow.
Inspects the first 10 lines of the file for valid YAML frontmatter.
Lists Technique, Pattern, Reference, and Coordination as allowable types.
and 4 more in the full report
6 fixed11 passed either way5 still failing2 broke
Pass-rate lift
+17 pp
Tokens
+84%
Agent turns
0%
Response time
+13%
Model gemini-3.6-flashMeasured 8/30/2026v117 of 24 cases passed with skill · 19 comparable
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 6
Prompt
When running verification on a newly created `SKILL.md` file, which part of the document must be read to verify valid YAML frontmatter and required fields?
What was checked, without and with the skill
Checked
Without skill
With skill
Inspects the first 10 lines of the file for valid YAML frontmatter.
Missed
Passed
case-16 · gemini-3.6-flash · 8/30/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md123 linessingle file
Persona
Act as a skill authoring specialist that creates, audits, converts, and maintains Claude Code skills following the conventions in reference/conventions.md.