# Domain Bannin Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Domain Bannin

Check domain security, email authentication, DNS and SSL certificate configuration using public data

- Record: https://musedirectory.ai/connector/domain-bannin
- Category: Developer Tools
- Developer: j-doi (https://domain-bannin.jp/)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 847ms, checked 2026-09-28T07:01:01Z
- Endpoint: https://domain-bannin.jp/api/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-09-25T08:21:30Z)
- Source: Found in the official MCP Registry (io.github.j-doi/domain-bannin) https://registry.modelcontextprotocol.io/v0/servers?search=io.github.j-doi%2Fdomain-bannin

Diagnoses domain health by checking SPF, DKIM, DMARC, DNS records, SSL certificates, security headers, DNSSEC, CAA, HSTS, domain registration status and typosquatting risks. No sign-up required.

Example request: "Check if my company domain has proper email authentication and SSL certificate setup"

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Domain Bannin to help me. It is a free service with an MCP server at https://domain-bannin.jp/api/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- domain_diagnose: Runs a comprehensive health check on a public domain: SPF / DKIM / DMARC for the headline score, plus optional details on email-auth adjacent records (MX, BIMI, MTA-STS, TLS-RPT, DKIM key length), DNS infrastructure (NS, DNSSEC, CAA, AAAA, SOA, TXT), web security (HTTPS, certific

Screening checks:
- MCP handshake: pass (Answered in 630ms)
- Domain against threat feeds (Cloudflare security DNS): pass (domain-bannin.jp not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (1 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)