Citation Verify

Verifies whether a claim is actually supported by a source URL.

Overview

Verifies whether a claim is actually supported by a source URL. Fetches the source (HTML stripped, 100KB cap) and asks Venice claude-sonnet-4-6 whether the claim is supported, contradicted, or absent. Returns verdict, confidence (0-1), and the strongest evidence quote when available. Use it as a citation verifier, fact-check against URL, does-this-source-support-this-claim check, or hallucination detector.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/citation-verify	$0.0115	Invoke Citation Verify (General) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/citation-verify \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/citation-verify \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace