- name
- fact-check
- description
- 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.
Fact Check
Verify information through systematic source verification.
Workflow
- Identify the claim - Extract the specific statement to verify
- Search sources - Query reliable sources (news outlets, academic papers, official databases)
- Cross-reference - Check multiple independent sources
- Evaluate credibility - Assess source reliability and potential biases
- 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
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