Fact-checking MCP servers

A server here checks factual claims in news, posts or AI answers against sources and gives a verdict.

Not here: servers that merely cite their sources, sign or certify data, or verify identities.

384servers
262 remote122 localTagged by Odel's AI, which can make mistakes

Best fit

221 made for this, ranked by starsRemoteLocal
  1. GAIP Procurement Evidence Agent @tjcgraham-rgb/gaip-procurement-verifyNow part of GAIP Witness: tests supplier claims and compares them with published metadata.6% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  2. Stipple — Reference Verification @stipple/openwarrant-verifyFact-check citations: resolve, match, support claims. Arithmetic rechecked. Free to start.4% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  3. FDA import alert red lists @joelp22-maker/referencesource-import-alertsIs a foreign supplier on an FDA import alert red list, detained at the US border? 14,000+ listings.3% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  4. GoAI Moat Claim Verifier @goaimoat/claim-verifierVerify business claims and audit text for unsourced data.11% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  5. crosscheck @crosscheckapi/crosscheckChecks for AI agents over x402: review drafts, accept-check handoffs, scan skills before install.6% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  6. Rattlewatch @veritylabsai/rattlewatchCited US recall lookup for AI agents: CPSC and FDA data, nothing invented.3% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  7. Web Hygiene MCP @luca-003/web-hygiene-mcpLive web checks for AI agents: sitemaps, robots.txt, URL status, broken links, feeds, citations.9% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; it needs your API key.
  8. Verity @veritylabsai/verityCited product-compliance ground truth for AI agents. Never generates; always cites.3% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  9. Stringer Grounded Synthesizer @getstringer/synthesizerGrounded synthesis from public sources. 3 free calls total; then $0.10 brief or $0.25 deep via x402.4% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  10. Shoon A2A Trust Services (pilot) @shoonenterprises/shoon-a2a-sandboxFive trust services for agents: claim checks, citation audits, extraction, tripwires, work audits.8% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  11. Research MCP @research-mcp-hq/research-mcpCited research MCP (MCP+agent infra): brief, lookup. Fail=$0.8% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; it needs your API key.
  12. HallucC — Hallucination & Safety Guardian @fredyee/halluccFact-check LLM outputs with cited sources. API key: aihcc.cloud/keys.19% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; it needs your API key.
  13. Nota @pugarhuda/notaRead-only crypto research skills that check a price, RSI and ATR against independent sources.4% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  14. AgentIndex x402 @agentindex/x402Jev-powered decisions, web search, PDF/web to Markdown, summarize. From $0.001, no API key.5% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  15. Verify @drain54/verify-apiAI claim verification MCP endpoint with x402 payments and stealth web fetch34% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  16. Probe V0 @lexbritten/probeExperimental MCP server for current empirical verification of explicit public HTTPS endpoint claims.5% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  17. Stipple — Document Verification & Extraction @stipple/openwarrantDocument forensics: tamper/AI checks, fields, tables, identity, screening, tenders, citations.5% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  18. Quorum @godzilla-lab/quorumMarket evidence with receipts: every claim resolves to a real stored record you can fetch back.4% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  19. Greenlit Books @greenlitbooks/catalogSearch the Greenlit AI books, read any chapter one free, and look up the terms they define.3% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  20. MCP x402 - Evidence-Backed Web Verification @diogoup26/mcp-x402Evidence-backed x402 web verification for AI agents, with auditable decisions for every condition.8% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  21. Andreax @moralito311-andr/andreax270 pay-per-call AI tools for agents, paid via x402 (USDC on Base). No signup, no API keys.11% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  22. referencesource.org @joelp22-maker/referencesourceVerified reference data; each record carries its source URL and quote. verify_quote checks claims.3% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  23. FinanceRateCalc HMDA statistics @financeratecalc/frc-mcp2025 US FHA mortgage record statistics, with a gate that checks AI sentences preserve the evidence19% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.
  24. Tru8 Evidence Research @samyatessmith/tru8Source-traced evidence research for AI agents. We organise the evidence; you decide.4% chance this is malicious. Assessed by AI, which can make mistakes.A remote server; no sign-in.