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Broken on purpose — the sequence below is misindented, which is how a hand-written frontmatter usually breaks.
Passed 22 of 22 test cases with the skill, and 3 of 22 without it.
and 12 more in the full report
19 fixed3 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 19 test cases the skill fixed. Same model, same prompt, with and without the skill.
A developer assumes that any frontmatter issue, including missing closing `---` delimiters and malformed YAML syntax, returns SF0001. When `blog/post.md` has valid delimiters but invalid YAML block syntax on line 3, which code is assigned?
| Checked | Without skill | With skill |
|---|---|---|
| The response identifies SF0003 as the code for unparsable YAML frontmatter syntax. | Missed | Passed |
The instructions your model reads when the skill loads.
This sample must produce SF0003 (unparsable YAML) and must never crash the CLI.
The second item under compatibility is indented one space less than the first. YAML rejects the
document, and SkillForge has to report that as a diagnostic pointing at the offending line rather than
as a stack trace.
test cases passed, vs 3 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.