Fact Check — Primary Source Claim Verification

Verify factual claims against primary sources using web lookups. Training data recall is NOT evidence.

When to Use

• Backlog items marked UNVERIFIED
• Plugin documentation with uncited claims about tools, APIs, CLI flags
• Skills that reference specific software behavior without citation
• After code review agents flag potential fabrication

When NOT to Use

• Structural findings (broken links, missing files, malformed YAML) — those are filesystem checks, not fact checks
• Code logic bugs — use /find-cause instead
• Research on new tools — use /research-curator instead