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IBAN, EU VAT, NIP, REGON, PESEL, email checks. Only $0.001 (0.1 cent) per check via x402 on Base
MCP endpoint :https://validate.crewofthecaptain.com/mcp · website · measurements and detailsVerify claims with web evidence. Returns sources and verdict. x402 micropayment.
MCP endpoint :https://fact-checker.api.klymax402.com/mcp · website · measurements and detailsAudit SPF, DKIM, DMARC, MX, BIMI, MTA-STS for a domain; score + grade. $0.003 USDC/call via x402.
MCP endpoint :https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp · website · measurements and detailsValidate email addresses by format, MX record, and disposable domain. No key required.
Package npm :email-validator-mcp · website · measurements and detailsCompare two texts line-by-line — additions, deletions, unchanged. x402 micropayment.
MCP endpoint :https://diff-checker.api.klymax402.com/mcp · website · measurements and detailsSSL certificate check — validity, expiry, issuer, chain, grade. x402 micropayment.
MCP endpoint :https://ssl-checker.api.klymax402.com/mcp · website · measurements and detailsValidate, format, and inspect JSON locally. No network and no key.
Package npm :json-tools-mcp · website · measurements and detailsTest any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.
MCP endpoint :https://x402-seller-kit.soloearn.workers.dev/mcp · website · measurements and detailsValidate and format international phone numbers locally. No network and no key.
Package npm :phone-validator-mcp · website · measurements and detailsMCP server for JSON processing — format, validate, diff, convert, minify, query, analyze
Package npm :json-forge-mcp · website · measurements and detailsFree check/board/name; paid bid/report 0.05, 1c fx/wx/lookups, news 0.001.
MCP endpoint :https://x402-checker.nock-for-mak.workers.dev/mcp · website · measurements and detailsPhone number validation, formatting, carrier, line type and timezone
MCP endpoint :https://phonekit-phone-number-validation-carrier-line-type.p.rapidapi.com/mcp · website · measurements and detailsIBAN validation, extraction, format specs and BIC/SWIFT lookup tools for AI assistants.
MCP endpoint :https://mcp.ibanchecker.cash/mcp · website · measurements and detailsParse, validate and normalize postal addresses. Detect country, verify format. x402.
MCP endpoint :https://address-validator.api.klymax402.com/mcp · website · measurements and detailsJSON processing — format, validate, diff, convert, minify, query, analyze
Package npm :json-forge-mcp · website · measurements and detailsValidate, search, graph, and safely author local Open Knowledge Format bundles.
Package npm :@mfdaves/okf-mcp · website · measurements and detailsOffline phone number validation and formatting at the edge: E.164/national/international formats,...
MCP endpoint :https://phone-format-check.david-cyr.workers.dev/mcp · measurements and detailsOSS license metadata + compatibility checker MCP server.
Package npm :@weiseer/license-checker-mcp · website · measurements and detailsChecks if a URL path is allowed by robots.txt. x402 payment required (testnet USDC).
MCP endpoint :https://faceted-napped-debtless.ngrok-free.dev/robots-txt-checker/mcp · measurements and detailsConvert, validate, and inspect AI agent memories across formats
Package pypi :mif-tools · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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