Use DNS Doctor in Claude

Add the connector

1. Open Customize → Connectors, choose Add, then Add custom connector.
2. Name: DNS Doctor.
3. MCP server URL:
   https://dnsdoctor.dev/mcpCopy
4. Under Authentication, choose Sign in when needed. Claude may pre-select “No sign-in”. With that, the free checks work, but Claude can never connect your DNS Doctor account.
5. OAuth client: keep the default, Use Claude's published identity.
6. Choose Add.

If DNS Doctor appears in Claude's Connectors directory, you can add it from there instead.

Add it to Claude Code

Run this once in your terminal:

When a tool needs your account, sign in from Claude Code with /mcp.

Or install the plugin, which adds the same server plus a skill that walks the scan, diagnose and fix steps:

What works without an account

Every check and lookup is free and needs no sign-in:

• A full domain scan and its report: SPF, DMARC, DKIM, MX, DNS health, blacklists, and domain and SSL expiry.
• SPF: the DNS lookup count against the limit of 10, and an audit of every include (who can send as your domain).
• DMARC: check a record, generate one for a domain that has none, and the next policy step when the evidence supports it.
• DKIM: check a specific selector and its key.
• Propagation: whether a DNS change has reached resolvers around the world, and a quick read of any single record.
• Reverse DNS for a mail server IP.
• WHOIS and registration: registrar, expiry date, locks and nameservers.
• Lookalike domains: which close variants of your name resolve and accept mail.
• DMARC aggregate reports: upload one and get it in readable form.
• A protection pack for a domain that sends no mail.

What needs your DNS Doctor account

• Add a domain to monitoring and get the ownership record to publish.
• Check whether that record is visible yet and mark the domain verified.
• Get the records a monitored domain still needs.
• Read your alerts, DMARC readiness and lookalike watches.

When Claude needs your account, it shows a Connect button. You sign in to DNS Doctor (Google, GitHub or an emailed sign-in link), approve “claude.ai wants to connect to your DNS Doctor account”, and Claude continues the same request. A new account starts with a 14-day free trial, no card required. One sign-in covers all of the above.

What Claude can and can't do

• It never changes your DNS. You publish every record yourself.
• Every record it shows comes from DNS Doctor's record engine, not written by AI.
• You can disconnect Claude any time: in DNS Doctor, open Settings → API tokens and revoke the token marked “linked from claude.ai”.

What is sent to DNS Doctor

The domains you ask about are sent to dnsdoctor.dev. A domain scan saves a public report page for that domain, which anyone with the link can open. Details are in the privacy policy.

If something goes wrong

Claude never offers to connect

The connector was added with “No sign-in”. Remove it and add it again with “Sign in when needed”.

Connect failed

Email hello@dnsdoctor.dev and say what you saw.