MCP connectors by in.akrivis.rail

19 deterministic validation tools for AI agents: IBAN, SWIFT/BIC, LEI, VAT, ABA routing, IFSC, ABN, Luhn, ISBN, E.164, SEDOL and company-number checks, plus rental due-diligence and batch/vendor-onboarding packs. Pay-per-call via x402 (gasless EIP-3009 USDC on Base); 20 free calls/day, no API key.