DemiSignal

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

Install

Remote server: your requests and data go to demisignal.com. Claude Code: claude mcp add --transport http demisignal https://demisignal.com/mcp?utm_source=mcp-registry · Claude app: Settings → Connectors → Add custom connector.

What it can do

The tools this server listed when we connected to it, in its own words.

• 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 reco
• 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'
• 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 th

KitScout test notes

Not tested by KitScout yet. When our harness runs it, pros, cons and the tasks we tried appear here, with the date and evidence.

Similar tools

• ponytail-audit 190,451 ★
  Quality audit of the whole repo: bugs, security, real load, missing tests, speed, and what to delete. Most imp
• ponytail-debt 190,451 ★
  Harvest every shortcut: comment into one debt ledger, so deferrals get tracked instead of forgotten. One-shot
• security-and-hardening 117,221 ★
  Hardens code against vulnerabilities. Use when auditing an input handler for vulnerabilities, when handling us
• deal-with-security-advisory 113,505 ★
  Handle confidential GitHub Security Advisory response for Paperclip. Use when coordinating advisory triage, pr
• html-ppt-knowledge-arch-blueprint