MCP server

x402 DNS Email Auth Checker

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

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Working at last checkAbout 299 tokens per request once connected2 tools

Website

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

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 2
Token cost: About 299 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.dns-auth-checker]
url = "https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp"

Gemini CLI

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

Cursor

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

VS Code

{"servers":{"dns-auth-checker":{"type":"http","url":"https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp"}}}

Antigravity

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

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"dns-auth-checker","server_url":"https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"dns-auth-checker","server_url":"https://x402-dns-auth-checker.microtools-x402.workers.dev/mcp"}

Tools

domain_auth_check ~243 tokens
Audit a domain's email authentication DNS: SPF (record count, all qualifier, includes, ~DNS lookups vs 10 limit), DMARC (p, sp, pct, rua/ruf, adkim/aspf), DKIM (common or given selectors, key type and length), MX, plus BIMI / MTA-STS / TLS-RPT presence. Returns per-check status, issues, recommendati
health ~56 tokens
Free health check. Returns service status, price and network.

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