com.demisignal/mcp·Security

DemiSignal

Check a domain's DMARC, SPF, DKIM, MX, BIMI and MTA-STS records. Generate SPF and DMARC records.

Stars
—
Version
1.0.0
License
—
Review
Passed
Website
Registry update
Oct 14, 2026

Connect

remote
Terminal
$claude mcp add --transport http mcp https://demisignal.com/mcp?utm_source=mcp-registry

Headers

Nothing to configure — it works as is.

Security review

Review passed

Reviewed 50m ago.

tools
3 tools scanned
metadata
scanned

No findings.

Tools

3

  • check_domain

    Look up a domain's live DNS and grade its email authentication: DMARC, SPF, DKIM (common selectors), MX, BIMI and MTA-STS. Returns each record, its status and the issues found, with a guide link per issue. A domain checked in the last few minutes is answered from that check.

  • generate_spf_record

    Build an SPF TXT record from the services and servers that send email for a domain, with an estimate of the DNS lookups it uses against SPF's limit of 10. Computes from the arguments only; nothing is looked up or stored.

  • generate_dmarc_record

    Build a DMARC TXT record and the host to publish it at, from a policy and the addresses that should receive aggregate reports. Notes what the record does not cover yet. Computes from the arguments only; nothing is looked up or stored.

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Listing from the official MCP Registry.