io.github.truepointmarketingpartners-dotcom/claim-grounding

up checked 2026-11-11T04:39:30.276Z

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Publisher-provided title

Claim Grounding

Publisher-provided description

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

Summary by lookupd

Fact-checks AI-generated claims against Wikipedia and Wikidata, returning verdicts with cited sources; pay-per-call via x402.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http claim-grounding https://claim-grounding.prospectintel.workers.dev/mcp

Codex, remote (streamable-http)

codex mcp add claim-grounding --url https://claim-grounding.prospectintel.workers.dev/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (5 tools)

Publisher-provided text

• extract_claims Split a text (for example an AI-generated answer) into atomic factual claims. Each claim includes span, grounding_required, claim_type (number|date|quantity|quo
• quick_check Fast, low-cost check of ONE factual claim. Returns verdict supported, contradicted or unsure, a confidence score, a short reason and 1-2 public sources (Wikiped
• verify_claim Check one factual claim against public Wikipedia sources and return a verdict (supported, contradicted, outdated, mixed or insufficient_evidence), a confidence
• check_answer Fact-check a whole answer: extracts every checkable claim and verifies each against Wikipedia, plus Wikidata structured facts for dates, numbers, quantities, or
• deep_verify Use when a claim is high-stakes, or when check_answer or extract_claims marks it unsure (their next_step gives the exact request). Verifies up to three claims a

Details

• Version: 1.4.7
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 423 ms
• First indexed: 2026-11-01T09:58:30.601Z
• Last seen in registry: 2026-11-01T09:58:30.611Z
• Repository: https://github.com/truepointmarketingpartners-dotcom/prospect-intelligence
• Website: https://claim-grounding.prospectintel.workers.dev

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