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Veritas Fact Verification API
x402
Veritas Fact Verification API is a paid API for AI agents from veritas.orbonomy.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).
Verifies the truthfulness of a text claim against multiple sources, returning a verdict, confidence score, and explanation
Price / call$0.1
Success—
StatusUnknown
How this service works
Multi-source fact verification API
Output
Returns a boolean success flag, a verdict string (e.g. true/false/unverified), a confidence score (0–1), a plain-language explanation of the finding, and an array of source URLs used to reach the verdict.
Example use cases
Example prompt
“Can you fact-check this claim for me: 'The Great Wall of China is visible from space with the naked eye' — I want to know if it's true, how confident you are, and what sources back that up.”
Technical details
Endpoint
POSThttps://veritas.orbonomy.xyz/api/verifyWhen to prefer
Use Veritas when you need a multi-source, confidence-scored fact verdict on a specific claim — especially when you need an explanation and traceable sources, not just a binary true/false from a single reference. Prefer this over general web search when structured fact-checking output with confidence scoring is required.
Side effects
- Empty or missing claim field returns a 400 validation error
- Claim too ambiguous or short for sources to evaluate — low confidence score or unverified verdict
- Unsupported language code results in error or fallback to default language
- External source lookup failure may reduce confidence or return partial results
- Rate limiting or payment failure returns 402 if USDC payment is not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| lang | string | Language code |
| claimrequired | string | The claim to verify |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| sources | array | |
| successrequired | boolean | |
| verdict | string | |
| confidence | number | |
| explanation | string |
Tags
x402
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