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frontmatter-guard

95 / 100 · Low risk

Fine to try.

By garrytan/gbrain (GitHub) · other · 32,412 stars · scanned at commit 001c8c3

Validate and auto-repair YAML frontmatter on brain pages. Catches malformed pages before they enter the brain (missing closing ---, nested quotes, slug mismatches, null bytes, empty frontmatter, YAML parse failures), explains files sync holds instead of importing, and drives the previewed `gbrain repair frontmatter` fix. Wraps the `gbrain frontmatter` CLI for agent-driven workflows.

Works with any agent that supports SKILL.md skills.

What this skill can do

Other copies in this repository

garrytan/gbrain has 1 more folder with a skill named frontmatter-guard. This page shows the lowest-scoring copy.

• plugin/skills/frontmatter-guard 95/100 · Low risk

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'frontmatter-guard' ] || [ -L ~/.agents/skills/'frontmatter-guard' ]; then echo 'A skill folder named frontmatter-guard already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/garrytan/gbrain' "$d" && git -C "$d" checkout --quiet '001c8c39e84d726e9bb6ecbae053458c970d5af3' -- 'skills/frontmatter-guard' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/frontmatter-guard' ~/.agents/skills/'frontmatter-guard' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'frontmatter-guard' ~/.claude/skills/'frontmatter-guard' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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