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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, $0.35/call, status unknown (last checked 2026-09-15).
Verifies a text claim as supported, unsupported, or uncertain, returning a confidence score, reasoning, and evidence
Price / call$0.35
Success—
StatusUnknown
How this service works
Grounded Pro reality-check (premium synthesis).
Output
Returns a structured verdict object containing: a verdict enum ('supported', 'unsupported', or 'uncertain'), a numeric confidence score (0–1), a reasoning string explaining the judgment, and an array of evidence strings backing the verdict.
Example use cases
Customer support response verification
“Before we send this reply to the customer, can you fact-check what our agent is about to say? The claim is 'Our product ships within 48 hours to all US addresses' — I need to know if that's actually accurate, how confident you are, and what evidence supports it.”
News article claim validation
“I'm reading through this news snippet our agent pulled in, and I'm skeptical about one statement. Can you verify whether 'Solar panels convert about 20% of sunlight into electricity' is true or false, and show me the reasoning and evidence behind your verdict?”
AI-generated content accuracy check
“My AI agent just wrote a product description that mentions 'titanium is non-magnetic' — before we publish it, can you fact-check that claim for me and give me your confidence score plus the evidence you're basing that on?”
Technical details
Endpoint
POSThttps://verity-bzw7.onrender.com/verify/proWhen to prefer
Use Verity when an AI agent needs to programmatically fact-check a specific claim or statement, especially in pipelines where trust, accuracy, or hallucination detection matters. Prefer this over general LLM reasoning when you need a structured, paid, auditable verdict with explicit evidence and confidence rather than an inline model guess.
Side effects
- Missing required 'claim' field returns a validation error
- Claim is too vague or ambiguous resulting in an 'uncertain' verdict with low confidence
- Service unavailable on render.com cold start causing timeout
- Payment failure (x402) if USDC balance is insufficient — request is rejected before processing
- Overly long or complex claim may reduce reasoning quality
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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