Verify statistics and claims in blog posts by fetching cited source URLs and checking if the claimed data actually appears on the page. Extracts all statistical claims (numbers, percentages, named sources), fetches each cited URL via WebFetch, and scores match confidence (exact match 1.0, paraphrase 0.7-0.9, not found 0.0). Flags uncited claims as UNVERIFIED. Use when user says "fact check", "verify statistics", "check sources", "validate claims", "factcheck", "source verification".
How to install blog-factcheck?
infrasity-labs/dev-gtm-claude-skills/blog-factcheck
$npx -y skills add infrasity-labs/dev-gtm-claude-skills --skill blog-factcheckInstalls into the current project.
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Run `npx skills use "https://github.com/infrasity-labs/dev-gtm-claude-skills" --skill "infrasity-labs/dev-gtm-claude-skills/blog-factcheck"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/infrasity-labs/dev-gtm-claude-skills" that are relevant to the current task. Run `npx skills add "https://github.com/infrasity-labs/dev-gtm-claude-skills"` and select the relevant skills, then follow their instructions.
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