DnsGuard

dev.workers.mike-tusa.dnsguard/dnsguardVersion 0.9.0

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

Status

Responds233 msNov 14, 2026, 14:28 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://dnsguard.mike-tusa.workers.dev/mcpResponds233 msNov 14, 2026, 14:28 UTC

No sign-in

claude mcp add --transport http dnsguard https://dnsguard.mike-tusa.workers.dev/mcp

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Settings > Connectors > Add custom connector
Name: dnsguard
Remote MCP server URL: https://dnsguard.mike-tusa.workers.dev/mcp

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

code --add-mcp '{"name":"dnsguard","type":"http","url":"https://dnsguard.mike-tusa.workers.dev/mcp"}'

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1 tools

Tools of DnsGuard
	Description		Read-only	Idempotent	Open world
`check_domain`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 report. Read-only: it only queries public DNS and the domain's public MTA-STS policy file. Same engine and scoring as the DnsGuard JSON API (GET /api/check).	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 report. Read-only: it only queries public DNS and the domain's public MTA-STS policy file. Same engine and scoring as the DnsGuard JSON API (GET /api/check).	No	Yes	Yes	Yes

Registry status: Active
Published: Oct 18, 2026
Updated: Oct 18, 2026
Website: https://dnsguard.mike-tusa.workers.dev/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): SecuritySuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared