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DomainRef - domain and email security check

by domainref.dev · remote · no sign-in to list tools · v1.0.0 · published by dev.domainref

Pay-per-call domain and email security check: SPF, DKIM, DMARC, TLS, DNSSEC, BIMI, with exact fixes.

Changes · 2
CompareRegistry entry

2 tools: 2 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http domainref https://domainref.dev/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 2Claude Code: ask
  • domain_agePAID ($0.005).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    PAID ($0.005). Not for registries without RDAP, e.g. .za/.co.za, .me, .de, .io, .eu: refused free (422). Use when you need to know which registrar holds a domain, how old it is, and whether it is a risky newly-registered domain. $0.005. From the registry's RDAP: registrar name and IANA ID (no registrant or contact data), created, expires, last changed, status flags, DNSSEC delegation, nameservers; fail under 30 days old or expired, warn under 180 days, expiring within 30 days or on hold. A registry without RDAP is refused free. MCP: pass api_key (an Afriref key, card credit at https://afriref.dev/pricing); per-call x402/MPP payment is HTTP only, so without a key the result is an api_key_required error naming the HTTP endpoint.

    Annotations the server declares

    • title: Domain Age and Registrar
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • domain_checkPAID ($0.01).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    PAID ($0.01). Use when mail lands in spam, before an email campaign, for vendor due diligence or to confirm a Microsoft 365 tenant: graded SPF, DKIM, DMARC, MX, MTA-STS, DNSSEC, CAA, TLS and domain age, plus BIMI and blocklist info, each with the exact fix record. Non-intrusive. $0.01 per domain. Returns a 0-100 score and, per check (spf, dkim, dmarc, mx, tls = website certificate, m365, registration, mta_sts, tls_rpt, dnssec, caa, bimi, dnsbl = UCEPROTECT blocklist), a pass/warn/fail/info grade, the finding and the exact record or step that fixes it. Info checks do not move the score. Invalid, nonexistent or private-only domains are refused free. MCP: pass api_key (an Afriref key, card credit at https://afriref.dev/pricing); per-call x402/MPP payment is HTTP only, so without a key the result is an api_key_required error naming the HTTP endpoint.

    Annotations the server declares

    • title: Domain and Email Security Check
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http domainref https://domainref.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__domainref__domain_check",
      "mcp__domainref__domain_age"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as domainref. Review it before you use it.