Claim Grounding

Last 30 days

Uptime

100%

Response time

289 ms typical, 289 ms slowest 5%

Last check

1 h ago

Next check

in 5 h

How to call it

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "claim-grounding": {
      "type": "http",
      "url": "https://claim-grounding.prospectintel.workers.dev/mcp"
    }
  }
}

4 tools

• extract_claims

  Split a text (for example an AI-generated answer) into atomic factual claims, each with its character span and a grounding_required flag that says whether it is a checkable fact (questions, greetings and opinions are flagged false). Use it before verify_claim to decide what to ch

• verify_claim

  Check one factual claim against public Wikipedia sources and return a verdict (supported, contradicted, outdated, mixed or insufficient_evidence), a confidence score, a short reason, the supporting quote and the source URL.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: $

• check_answer

  Fact-check a whole answer: extracts every checkable claim and verifies each one against public Wikipedia sources, returning a verdict, confidence, quote and source URL per claim plus suggested next actions. Use it to audit chatbot or RAG output before showing it to a user. Price:

• deep_verify

  Multi-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 contr

Security scan

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