Fact Check

Verify claims, statements, and information against reliable sources. Use when user asks to fact-check, verify, confirm, validate, or check the accuracy of any statement, statistic, quote, date, or claim. Performs cross-reference searches, identifies source credibility, and provides evidence-based verdicts.

Verify information through systematic source verification.

Workflow

1. Identify the claim - Extract the specific statement to verify
2. Search sources - Query reliable sources (news outlets, academic papers, official databases)
3. Cross-reference - Check multiple independent sources
4. Evaluate credibility - Assess source reliability and potential biases
5. Deliver verdict - Provide clear conclusion with evidence

Claim Types

Type	Approach	Trusted Sources
Statistics	Find original study/data	Government databases, peer-reviewed journals
Quotes	Locate primary source	Official transcripts, news archives
News events	Verify via multiple outlets	Major news organizations
Historical facts	Consult academic sources	Encyclopedias, scholarly publications
Product/company info	Check official sources	Company websites, SEC filings

Source Hierarchy

Tier 1 (Highest):

• Peer-reviewed journals
• Government databases/official statistics
• Court records, legal documents

Tier 2:

• Major news outlets (Reuters, AP, BBC, etc.)
• Established academic institutions
• Official company/organization statements

Tier 3:

• Social media (verify via other sources)
• Blogs, personal websites
• Unverified reports

Output Format

text

Claim: [exact statement]

Verdict: [TRUE / MOSTLY TRUE / UNVERIFIABLE / MOSTLY FALSE / FALSE]

Evidence:
- Source 1: [details]
- Source 2: [details]

Notes: [context, caveats, or additional context]

Constraints

• Never state certainty beyond what evidence supports
• Distinguish between "unverified" and "false"
• Provide sources, don't just claim verification
• Flag opinions vs facts clearly
• Update verdict if new evidence emerges