fact-checker

Evaluate factual claims and assign verdicts with confidence levels.

4|1|Updated Mar 18, 2026
One-click install
npx skills add https://github.com/xcrrr/claude-skills --skill fact-checker-xcrrr
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: fact-checker
Source: https://github.com/xcrrr/claude-skills/tree/main/skills/research/fact-checker
Command: npx skills add https://github.com/xcrrr/claude-skills --skill fact-checker-xcrrr

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

The skill helps users verify factual claims, check accuracy, and assess credibility to prevent misinformation across articles, reports, and public discourse.

Core Features & Use Cases

  • Isolate and restate the claim in neutral terms to ensure precise evaluation.
  • Identify and assess credible sources, prioritizing primary or official documents.
  • Provide a transparent verdict with evidence, caveats, and confidence levels to support decision making.

Quick Start

Isolate the claim, gather primary sources, and return a verdict with supporting evidence.

Frequently Asked Questions about fact-checker

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

FAQPage Schema
How do I fact-check a claim to determine its accuracy and credibility?▼

To fact-check a claim, you isolate and restate it in neutral terms, gather primary or official sources, and evaluate the evidence to return a clear verdict with confidence levels.

What is the best way to verify statistics and quotes from social media articles?▼

Verifying statistics and quotes requires isolating the attributed claim, assessing credible sources, and applying transparent reasoning to label the verdict with confidence levels.

Can I use this approach to evaluate historical statements and attributed claims?▼

Yes, you can evaluate historical statements and attributed claims by isolating the factual assertion and cross-referencing it against credible primary documents to assess accuracy.

How does the verification process handle caveats and uncertainty in evidence?▼

The verification process handles uncertainty by providing a transparent verdict that explicitly states evidence, caveats, and confidence levels to support accurate decision making.

What sources are needed to prevent misinformation in public discourse?▼

Preventing misinformation requires identifying and assessing credible sources, prioritizing primary or official documents to ensure claims are backed by transparent reasoning and evidence.