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Verity Suite – Cite Pro (Citation Finder)
x402
Verity Suite – Cite Pro (Citation Finder) is a paid API for AI agents from suite.veritylayer.dev, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-14).
Given a factual statement, finds and returns calibrated supporting citations with a verdict on how well the sources establish the claim.
Price / call$0.35
Success—
StatusUnknown
How this service works
The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.
Output
Returns a verdict enum (supported, partially_supported, not_supported, or contradicted), a calibrated 0–1 support score indicating how strongly retrieved sources establish the statement, a list of citations, concrete reasons for the verdict including why any candidate sources were rejected, optional caveats about scope or recency, and an optional Ed25519-signed VerityLayer receipt for cryptographic provenance.
Example use cases
AI-generated content fact-checking
“I just drafted a blog post claiming that 'global EV adoption surpassed 10% of new car sales in 2023' — can you find authoritative sources that support or contradict this and give me a verdict on how solid the evidence is?”
Legal brief claim verification
“Before I file this brief, I need citations backing the claim that 'punitive damages are rarely awarded in contract disputes under common law' — search in the context of contract and tort law and tell me how strongly the sources actually establish it.”
Research assistant citation sourcing
“I'm writing a lit review and need sources for the statement 'CRISPR-Cas9 has been used successfully to correct sickle cell disease mutations in human stem cells' — can you find peer-reviewed citations and rate how well they support that specific claim?”
Technical details
Endpoint
POSThttps://suite.veritylayer.dev/cite/proWhen to prefer
Choose this endpoint when an AI agent needs a calibrated, sourced verdict on a specific factual claim — especially in high-stakes contexts like medical, legal, financial, or scientific content where hallucination risk must be mitigated. Prefer this over generic web search when you need a structured support score, explicit rejection reasoning, and an optional cryptographically signed receipt for auditability. Best suited for single, well-formed declarative statements rather than open-ended research queries.
Side effects
- Statement is too vague or ambiguous for source retrieval — low support score with explanatory reasons
- No relevant sources found — verdict returns not_supported with score near 0
- Domain hint narrows search too aggressively, missing relevant sources
- Statement contains multiple sub-claims — only partial coverage, reflected in caveats
- Sources retrieved contradict the claim — verdict returns contradicted
- Signing not configured — receipt field returns null
- Input exceeds 2000 character limit — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| statement | string | the factual claim to find supporting sources for |
| domain_hint | — | optional topic/field to focus the search (e.g. 'clinical', 'tax law') |
Tags
x402
Reviews
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