Claim Grounding

io.github.truepointmarketingpartners-dotcom/claim-grounding · v1.4.7 · crypto-web3

Claim Grounding is healthy: it completed an MCP handshake in 780 ms and exposes 4 tools.

Fact-check AI answers with cited sources. Pay per call in USDC on Base via x402.

Endpoint: https://claim-grounding.prospectintel.workers.dev/mcp (streamable-http)

Repository · Website · JSON · Add to my inventory

Facts

Users (last 30 days)0
HandshakeHealthy
Auth neededNone
Tool count4
Latency780 ms
Last checked (UTC)2026-10-15T11:10:11.829Z

Health history

Checked (UTC)StatusLatencyError
2026-10-15T11:10:11.829ZHealthy780

Tools (4)

extract_claimsSplit a text (for example an AI-generated answer) into atomic factual claims. Each claim includes span, grounding_required, claim_type (number|date|quantity|quote|named_entity_fact|comparison|opinion|prediction|other), check_worthiness (high|medium|low), and the source sentence. Hedges are stripped,
verify_claimCheck one factual claim against public Wikipedia sources and return a verdict (supported, contradicted, outdated, mixed or insufficient_evidence), a confidence score, a short reason, the supporting quote and the source URL. Says insufficient_evidence instead of guessing. Price: $1.00 USDC on Base pe
check_answerFact-check a whole answer: extracts every checkable claim and verifies each against Wikipedia, plus Wikidata structured facts for dates, numbers, quantities, ordinals and records. Returns per-claim verdict, confidence, quote, source URL, sentence span and suggested_correction (quoted only from cited
deep_verifyMulti-source verification of up to three claims in a text against Wikipedia, Wikidata, Google News, Europe PMC (PubMed studies), FRED (US economic data) and SEC EDGAR (US company filings). Returns verdict, confidence, evidence for and against with quotes and URLs, and flags contradiction when source