MCP server

DnsGuard

dev.workers.mike-tusa.dnsguard/dnsguard

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

Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes.

Working at last checkAbout 325 tokens per request once connected1 tools

Website

https://dnsguard.mike-tusa.workers.dev/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 1
Token cost: About 325 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 dnsguard https://dnsguard.mike-tusa.workers.dev/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.dnsguard]
url = "https://dnsguard.mike-tusa.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"dnsguard":{"httpUrl":"https://dnsguard.mike-tusa.workers.dev/mcp"}}}

Cursor

{"mcpServers":{"dnsguard":{"url":"https://dnsguard.mike-tusa.workers.dev/mcp"}}}

VS Code

{"servers":{"dnsguard":{"type":"http","url":"https://dnsguard.mike-tusa.workers.dev/mcp"}}}

Antigravity

agy mcp add dnsguard https://dnsguard.mike-tusa.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":"dnsguard","server_url":"https://dnsguard.mike-tusa.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"dnsguard","server_url":"https://dnsguard.mike-tusa.workers.dev/mcp"}

Tools

check_domain ~325 tokens
Audit the email-authentication DNS records of a domain. Returns a 0–100 score and A–F grade (MX 10, SPF 25, DMARC 30, DKIM 25, BIMI 10, plus up to 5 bonus points for MTA-STS and TLS-RPT, capped at 100), each check's status, published record, findings and recommended fixes, and a link to the full rep

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