Fact Checker

Overview

In the age of AI-generated content, fact-checking is more critical than ever. Fact Checker automates the verification process by taking any claim and systematically checking it against multiple authoritative sources — news archives, academic databases, government data, and established fact-checking organizations.

Each claim gets a confidence score based on source agreement, recency, and authority. The skill distinguishes between verified facts, disputed claims, outdated information, and outright falsehoods. Every verification includes direct links to supporting and contradicting sources.

How It Works

1. Parse — Extract discrete claims from the input text
2. Search — Query multiple authoritative sources for each claim
3. Evaluate — Compare source findings, assess agreement and authority
4. Score — Assign confidence levels (Verified / Likely True / Disputed / Likely False / False)
5. Report — Return results with citations and reasoning

Use Cases

• Content review — Verify facts in articles before publication
• AI output validation — Check AI-generated content for hallucinations
• Academic writing — Verify citations and claims in research papers
• News monitoring — Automatically fact-check breaking news claims
• Compliance — Ensure marketing claims are substantiated

Getting Started

from fact_checker import FactChecker

checker = FactChecker()
result = checker.verify("GPT-4 was released in March 2023")
print(f"Confidence: {result.confidence}")
print(f"Sources: {result.sources}")

Example

Claim: "Python is the most popular programming language in 2026"

Verdict: ✅ VERIFIED (Confidence: 92%)

Supporting Evidence:
- TIOBE Index March 2026: Python #1 (source: tiobe.com)
- Stack Overflow Survey 2025: Python most used (source: stackoverflow.com)
- GitHub Octoverse 2025: Python #1 by PRs (source: github.com)

Notes: Ranking varies by methodology. JavaScript leads in some web-specific surveys.

Alternatives

• Google Fact Check Tools — API for accessing fact-check articles
• ClaimBuster — NLP-based claim detection and fact-checking
• Full Fact — UK-based automated fact-checking