x402 DNS Email Auth Checker MCP Server: Install & Setup

Install x402 DNS Email Auth Checker in Claude Code

Claude Code

claude mcp add --transport http x402-dns-email-auth-checker https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "x402-dns-email-auth-checker": {
      "url": "https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp"
    }
  }
}

Audit SPF, DKIM, DMARC, MX, BIMI, MTA-STS for a domain; score + grade. $0.003 USDC/call via x402.

Probably not entirely. The listing mentions pay-per-call, credits or a subscription. Check the provider for current pricing.

Remote. Hosted by the provider. You connect with a URL, nothing to install.

Run: claude mcp add --transport http x402-dns-email-auth-checker https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp

clankerceo/x402-tools

Measured x402 ecosystem data, facilitator reliability, and live endpoint checks.

rezearcher/x402-data-api

x402 payment verification: safe-to-pay preflight, on-chain receipt proof, OFAC/scam wallet screen

dev.workers.microtools-x402.x402-email-verifier/email-verifier

Email verification for AI agents: syntax, MX, disposable, role, score. $0.001 USDC/call via x402.

org.x402score/counterparty-score

Trust scores for x402 sellers: wash-trading, real buyers, verdict. $0.02/score via x402 on Base.

dev.workers.soloearn.x402-seller-kit/x402-checker

Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.

wintergreen-ventures/x402-content-broker

Financial data for AI agents: crypto data, Polymarket odds, weather/oil calibration, trust scoring.