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Verity Claim Verification
x402
Verity Claim Verification is a paid API for AI agents from verity-bzw7.onrender.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Verifies a textual claim and returns a structured verdict (supported/unsupported/uncertain) with confidence score, reasoning, and evidence
Price / call$0.25
Success—
StatusUnknown
How this service works
Grounded reality-check with live web citations.
Output
A structured Verdict object containing: a verdict enum ('supported', 'unsupported', or 'uncertain'), a numeric confidence score (0–1), a human-readable reasoning string explaining the judgment, and an array of evidence strings cited to support the verdict.
Example use cases
Fact-check user testimonials before publishing
“Before we post customer reviews on our website, can you verify each one? I need you to check if the claims they're making are actually true — like if someone says our product reduced their costs by 50%, verify that's realistic and supported by evidence.”
Validate AI-generated content for accuracy
“My AI chatbot just drafted some product descriptions for our catalog. Can you fact-check the technical specs and claims in there? I want to make sure nothing's overstated or false before it goes live, and I need a confidence score for each claim.”
Audit competitor claims in market research
“We're analyzing competitor marketing materials and I'm seeing a lot of bold claims about their features and performance. Can you systematically verify whether their statements hold up with evidence? I need structured verdicts so we can compare what's actually true versus what's just marketing hype.”
Technical details
Endpoint
POSThttps://verity-bzw7.onrender.com/verifyWhen to prefer
Choose Verity when an AI agent needs a structured, paid, high-accountability fact-check with explicit reasoning and evidence — particularly when the output needs to be machine-readable (verdict enum + confidence float) for downstream logic. Prefer this over a generic web search when you need a single authoritative verdict rather than a list of results, or when verifying AI-generated claims before acting on them.
Side effects
- Missing required 'claim' field returns a validation error
- Ambiguous or overly vague claims may return 'uncertain' with low confidence
- Claims requiring real-time data may be marked uncertain if evidence is unavailable
- Service unavailable on Render cold-start may cause timeout or 503
- Payment failure via x402 protocol blocks the request from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claimrequired | string | |
| context | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| verdictrequired | string | |
| evidencerequired | array | |
| reasoningrequired | string | |
| confidencerequired | number |
Tags
x402
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