Grounded Answer Check

Answer a question and grade how well the answer actually holds up against independent sources, in one call.

Overview

Answer a question and grade how well the answer actually holds up against independent sources, in one call. Composite: one call runs answer-web + web-search + wikipedia-search + retrieval-rerank + citation-verify in parallel, then maps the answer's sentences onto reranked, re-verified evidence passages. Pass a question to get a generated, cited answer, or pass your own answer as context to grade it instead. Returns a support score, a supported/unsupported verdict, and the exact spans that had no backing evidence. Use it as a grounded answer API, hallucination check, RAG grounding evaluator, or source-backed QA layer before an agent trusts and repeats an answer.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/grounded-answer-check	$0.069	Invoke Grounded Answer Check (Search) 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/grounded-answer-check \
  -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/grounded-answer-check \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace