frontmatter-guard
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). Wraps the `gbrain frontmatter` CLI for agent-driven workflows.
60
71%
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Low
Low-risk findings worth noting
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tessl review fix ./skills/frontmatter-guard/SKILL.mdLow
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
W011: Third-party content exposure detected (indirect prompt injection risk).
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
This skill’s required runtime workflow runs `gbrain frontmatter audit`/`validate` over registered “brain” sources (filesystem paths) and parses the contents of those .md/.mdx pages for frontmatter, which are user-authored inputs that can contain arbitrary free text.
- Repository
- garrytan/gbrain
- Commit
7b7921d
- Audited
- Security analysis
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