output-fact-checker

Verifies text claims against provided sources and authoritative webpages.

Updated Feb 20, 2026
One-click install
npx skills add https://github.com/garethdaine/agent --skill output-fact-checker
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: output-fact-checker
Source: https://github.com/garethdaine/agent/tree/main/skill-library/skills/output-fact-checker
Command: npx skills add https://github.com/garethdaine/agent --skill output-fact-checker

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill ensures the factual accuracy of agent-generated content by systematically verifying claims against provided sources and external references, preventing the dissemination of misinformation.

Core Features & Use Cases

  • Factual Claim Verification: Extracts and validates specific facts, figures, dates, names, and citations within agent outputs.
  • Source Cross-Referencing: Compares claims against provided documents and authoritative web sources.
  • Confidence Scoring & Reporting: Assigns a confidence rating to each claim and generates a detailed report highlighting discrepancies and potential corrections.
  • Use Case: Before publishing a market analysis report generated by an AI, use this Skill to verify all statistical claims, company names, and dates against official financial reports and reputable news sources.

Quick Start

Use the output-fact-checker skill to verify all factual claims in the provided agent output document against the attached source files.

Frequently Asked Questions about output-fact-checker

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I verify factual claims in AI-generated content against source documents?

To verify factual claims in AI-generated content, you can cross-reference stated figures, dates, names, and citations against provided source documents and authoritative web references to identify unsupported assertions. This process requires file-read and web-search tools for comprehensive validation.

What is the best way to detect hallucinated data in agent outputs before publishing?

Detecting hallucinated data in agent outputs involves systematically extracting specific facts and validating them against known references. This approach assigns a confidence rating to each claim and generates a detailed report highlighting discrepancies and potential corrections before content reaches end users.

Can I validate regulatory citations and statistical claims from a market analysis report using automated fact checking?

You can validate regulatory citations and statistical claims from a market analysis report by cross-referencing the extracted data against official financial reports and reputable news sources. This ensures all stated figures and dates are accurate and supported by authoritative documentation.

Do I need web-search and file-read tools to check content quality and source validation?

Yes, you need web-search and file-read tools to check content quality and perform source validation. These tools enable comprehensive verification by allowing the system to access and compare agent-generated claims against both attached source files and external authoritative references.

How does confidence scoring work when cross-referencing facts to identify misattributed information?

Confidence scoring works by assigning a rating to each extracted claim after cross-referencing it against known references. It generates a detailed report highlighting unsupported assertions, misattributed information, and potential corrections, ensuring accuracy before outputs reach end users.