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Compare Two Factual Claims with Sources
x402
Compare Two Factual Claims with Sources is a paid API for AI agents from red-breeze-8b8c.keenanbooker83.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).
Compares two factual claims and their cited sources to identify agreement, contradiction, and missing context between them
Price / call$0.03
Success—
StatusUnknown
How this service works
Compare two factual claims and their cited sources for agreement, contradiction, and missing context
Output
The agent receives a structured analysis identifying whether the two claims agree, partially agree, or contradict each other, along with an assessment of what context is missing from either source, and how the sourced evidence supports or undermines each respective claim.
Example use cases
Reconciling conflicting news reports
“I found two articles saying different things about the same election result — Claim A is 'Candidate X won with 54% of the vote' from https://apnews.com/article/election-result and Claim B is 'Candidate X secured 51% of ballots cast' from https://reuters.com/article/election — can you compare them and tell me if they actually contradict each other or if there's missing context?”
Cross-checking scientific study claims
“Compare these two scientific claims for me: Claim A is 'Coffee consumption reduces risk of type 2 diabetes by 25%' from https://pubmed.ncbi.nlm.nih.gov/study1 and Claim B is 'Regular coffee drinkers show 15% lower diabetes incidence' from https://nejm.org/coffee-study — are they saying the same thing, contradicting each other, or is there missing context I should know about?”
Debunking social media misinformation
“I need to compare a viral social media claim against an official source — Claim A is 'The vaccine caused 10,000 adverse events in one month' from https://vaersdata.org/report and Claim B is 'VAERS received 10,000 reports in one month, not all confirmed as vaccine-related' from https://cdc.gov/vaers-summary — do these agree, contradict, or is something important missing?”
Technical details
Endpoint
POSThttps://red-breeze-8b8c.keenanbooker83.workers.dev/compare-claimsWhen to prefer
Choose this endpoint when you specifically need to compare exactly two claims side-by-side with their respective supporting sources to determine agreement, contradiction, or missing context. Prefer this over the general fact-checker when the core task is relational — understanding how two claims relate to each other — rather than verifying one claim in isolation. Also prefer this over the conflict-detection endpoint when you have exactly two well-defined claims with known source URLs rather than a broader set of sources to scan.
Side effects
- Source URL is inaccessible, private, or returns a non-200 response — source content cannot be fetched
- Claim text exceeds 4000 character limit — request rejected with validation error
- Either claimA or claimB is empty — required field validation error
- Source URL does not contain relevant content to either claim — comparison may note insufficient source support
- Both claims are identical — system may return trivial agreement with no meaningful contradiction analysis
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claimA | string | First factual claim to compare. |
| claimB | string | Second factual claim to compare. |
| sourceUrlA | string | Public source URL supporting or discussing the first claim. |
| sourceUrlB | string | Public source URL supporting or discussing the second claim. |
Output
Schema · Response
{
"type": "json",
"example": {
"agent": "Claim Comparison Agent",
"agreement": "The claims describe consecutive events on December 7 and December 8, 1941.",
"confidence": 0.98,
"relationship": "compatible",
"contradictions": [],
"requestAccepted": true
}
}Tags
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