DemiSignal

com.demisignal/mcpVersion 1.0.0

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

Status

Responds525 msNov 14, 2026, 13:53 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 13:53 UTC
Latency: 525 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

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

Connect

Streamable HTTP

https://demisignal.com/mcp?utm_source=mcp-registryResponds525 msNov 14, 2026, 13:53 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: demisignal
Remote MCP server URL: https://demisignal.com/mcp?utm_source=mcp-registry

Cursor

{
  "mcpServers": {
    "demisignal": {
      "url": "https://demisignal.com/mcp?utm_source=mcp-registry"
    }
  }
}

VS Code

code --add-mcp '{"name":"demisignal","type":"http","url":"https://demisignal.com/mcp?utm_source=mcp-registry"}'

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Tools

3 tools

Tools of DemiSignal
	Description		Read-only	Idempotent	Open world
`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 (cached, with its age); pass refresh to look again after changing DNS.	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 (cached, with its age); pass refresh to look again after changing DNS.	Not declared	Yes	Yes	Yes
`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.	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.	Not declared	Yes	Yes	Not declared
`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.	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.	Not declared	Yes	Yes	Not declared

Details

Registry status: Active
Published: Oct 14, 2026
Updated: Oct 14, 2026
Website: https://demisignal.com/tools/mcp-server?utm_source=mcp-registry&utm_medium=mcp-directory⁠ (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

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