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Verity Suite Arbiter – Quick Claim Adjudication
x402
Verity Suite Arbiter – Quick Claim Adjudication is a paid API for AI agents from suite.veritylayer.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).
Adjudicates two or more conflicting claims against provided evidence and returns a calibrated verdict with signed receipt
Price / call$0.03
Success—
StatusUnknown
How this service works
The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.
Output
Returns a JSON object with: a verdict enum ('claim_supported', 'undecidable', or 'insufficient_evidence'), a confidence score, an array of concrete reasons that cite which evidence items support or undercut which claims by index, and an optional Ed25519-signed VerityLayer receipt that can be independently verified at the engine's POST /receipt/verify endpoint.
Example use cases
Resolving conflicting AI agent outputs
“Two of my research agents came back with opposite conclusions: one says 'lithium-ion batteries outperform solid-state on energy density today' and the other says 'solid-state batteries already exceed lithium-ion in commercial energy density.' Here are the four source excerpts they each cited — can you adjudicate which claim the evidence actually supports and give me the reasoning?”
Fact-checking disputed news claims
“I have two competing claims about last quarter's unemployment figures: 'unemployment fell to 3.7%' versus 'unemployment rose to 4.1%' — I've pulled three excerpts from the BLS report and two from Reuters. Can you tell me which claim the evidence backs up, flag it as insufficient if the sources don't resolve it, and return a signed receipt?”
Legal document contradiction check
“These two contract clauses seem to contradict each other: clause 4.2 says 'payment is due within 30 days of invoice' and clause 9.1 says 'payment terms are net-60.' The question in dispute is which term governs. Here are the relevant excerpts from the contract and the governing-law addendum — please adjudicate and tell me your confidence level.”
Technical details
Endpoint
POSThttps://suite.veritylayer.dev/arbiter/quickWhen to prefer
Choose this endpoint when an AI agent needs a calibrated, auditable judgment on exactly which of two or more conflicting claims is supported by retrieved evidence — especially when a signed, verifiable receipt matters for downstream trust or compliance. It is purpose-built for agent-to-agent trust pipelines, RAG verification steps, and any workflow where a fail-closed 'insufficient_evidence' verdict is safer than a hallucinated answer. Prefer it over general LLM reasoning when you need a stable, reproducible verdict tied to specific evidence and an external proof of adjudication.
Side effects
- Fewer than two claims provided — nothing to adjudicate, endpoint requires at least two
- Empty or off-topic evidence array — verdict will be 'insufficient_evidence' by design (fail-closed)
- Claims are not actually in conflict — adjudication may yield 'undecidable'
- Evidence is weakly related to the question — service reflects this in verdict rather than guessing
- Payment not included or insufficient — x402 payment failure before processing
- Malformed input schema — 400-level error if required fields (type, method, bodyType, body, claims) are missing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claims | array | Two or more mutually conflicting claims/positions to adjudicate, one per item, in stable order. Fewer than two means nothing to adjudicate. |
| evidence | array | Retrieved evidence excerpts/sources to judge from. If empty, weak, or off-topic, the verdict MUST reflect that (insufficient_evidence). |
| question | — | The specific point in dispute the claims are answering, if narrower than the claims themselves. Used to scope relevance only. |
Tags
x402
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