Quote argument-hint so YAML parses it as string#5
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Copilot CLI 1.0.65 requires argument-hint to be a string. Unquoted brackets ([crush-name-or-slug]) are parsed by YAML as a flow sequence, which fails schema validation. Wrapping the value in double quotes keeps it a string while preserving the display text.
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Tracking issue: #6 — captures the bug diagnosis and reproducer separately for anyone searching the repo who lands there before this PR. |
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Summary
The frontmatter in
SKILL.mdcurrently declares:Unquoted square brackets are YAML flow-sequence syntax, so this parses as a list of one string (
["crush-name-or-slug"]) rather than the intended string"[crush-name-or-slug]".Copilot CLI 1.0.65 tightened its skill/prompt frontmatter schema and now requires
argument-hintto be a string. With the current value, loading this skill fails schema validation. Quoting the value keeps the same rendered hint while satisfying the string requirement:This also matches the YAML rule cited in the related fixes below:
argument-hint: [X]→argument-hint: "[X]"argument-hint: ["X"]→argument-hint: "X"Claude Code and other consumers accept the quoted form without behavior change, so this is a safe, backward-compatible fix.
Related
argument-hintYAML frontmatter with brackets causes React error #31 and unrecoverable TUI hang anthropics/claude-code#22161 — latent version of the same issue on Claude CodeTest plan
yaml.safe_loadyieldsargument-hintof typestrwith value"[crush-name-or-slug]"(previously a 1-element list).SKILL.md); a full-tree scan forargument-hintreturns no other occurrences.