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Claim Grounding

Fact-check AI answers with cited sources.

Connector by truepointmarketingpartners-dotcom · GitHub account verified by the MCP Registry

IndexedLicense unknownRemote (HTTP)
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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/truepointmarketingpartners-dotcom-claim-grounding

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://claim-grounding.prospectintel.workers.dev/mcp Remote (HTTP)

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About

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

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
4 read · 0 write · 0 deleteRead-only
Secrets
None asked for
Install scripts
Nothing to install (hosted)
Runs as
Hosted (remote endpoint)

Tools by what they do 4

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 4 · Look things up without changing anything.

  • check_answer
  • deep_verify
  • extract_claims
  • verify_claim

Network hosts it talks to 1

  • claim-grounding.prospectintel.workers.dev · found in remote endpoint, install command

Tools (4)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • check_answerCheck answerread-only

    Fact-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confidence, quote, source URL, sentence span and suggested_correction (quoted only from cited sources when contradicted/outdated), plus an answer-level summary with overall_verdict, counts and problem_sentences. Abstained rather than guessed. Use to audit chatbot or RAG output. Price: $1.00 USDC on Base per call via x402; this MCP call returns payment instructions and POST /v1/check_answer …

  • deep_verifyDeep verifyread-only

    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 against Wikipedia, Wikidata, Google News, Europe PMC, FRED and SEC EDGAR; returns verdict, confidence, evidence for and against with URLs, and flags contradictions. Async: poll GET /v1/jobs/{job_id} free. $0.75 USDC on Base via x402. Read-only.

  • extract_claimsExtract claimsread-only

    Split 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, pronouns are resolved across sentences, and compound sentences are split. Questions, greetings, opinions and predictions are marked grounding_required false. Use before verify_claim. Price: $0.05 USDC on Base per call via x402; this MCP call returns payment instructions and POST /v1/extract_claims …

  • verify_claimVerify claimread-only

    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: $1.00 USDC on Base per call via x402; this MCP call returns payment instructions and the paid HTTP route POST /v1/verify_claim returns the verdict. For a multi-source check use deep_verify. Read-only.

Signals

Stars
0
Forks
0
Open issues
0
Last commit
Oct 13, 2026 (18 days ago)
Last release
Oct 15, 2026 (16 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name
io.github.truepointmarketingpartners-dotcom/claim-grounding
Version
1.4.7
Auth
Auth not stated
License
License unknown
Repository
github.com/truepointmarketingpartners-dotcom/prospect-intelligence
Website
claim-grounding.prospectintel.workers.dev
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registrygithub-graphql

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Claim Grounding MCP server. Agent Mart. https://agentmart.dev/connectors/truepointmarketingpartners-dotcom-claim-grounding (last updated 2026-10-24)