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DnsGuard

Official registry Productivity

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

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http dnsguard 'https://dnsguard.mike-tusa.workers.dev/mcp' --header 'Authorization: <Optional. '\''Bearer dg_live_…'\'' (free key, Google sign-in on the website) or '\''Bearer DNSG-…'\'' (DnsGuard Pro) for higher limits. Works without a key.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "dnsguard": {
            "type": "http",
            "url": "https://dnsguard.mike-tusa.workers.dev/mcp",
            "headers": {
                "Authorization": "<Optional. 'Bearer dg_live_…' (free key, Google sign-in on the website) or 'Bearer DNSG-…' (DnsGuard Pro) for higher limits. Works without a key.>"
            }
        }
    }
}

Frequently asked questions

What is DnsGuard?

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

How do I install DnsGuard?

It runs as a remote server. In Claude Code: claude mcp add --transport http dnsguard 'https://dnsguard.mike-tusa.workers.dev/mcp' --header 'Authorization: <Optional. '\''Bearer dg_live_…'\'' (free key, Google sign-in on the website) or '\''Bearer DNSG-…'\'' (DnsGuard Pro) for higher limits. Works without a key.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does DnsGuard need an API key?

Yes. It expects Authorization, which you set in its configuration.

Who maintains DnsGuard?

It is published by dev.workers.mike-tusa.dnsguard. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.