Public DNS probe MCP

No sign-in required. Endpoint /api/mcp-dns — tools: dns_probe_query, dns_probe_options_support, dns_probe_tooling_summary.

{
  "mcpServers": {
    "dns-tester": {
      "url": "https://vercel-dns-tester.vercel.app/api/mcp-dns"
    }
  }
}