x402 DNS Email Auth Checker for ChatGPT

dev.workers.microtools-x402.x402-dns-auth-checker/dns-auth-checker

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

client:ChatGPT transport:streamable-http tools:2

Install x402 DNS Email Auth Checker in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs