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Email DNS Preflight x402

by rosarioV25 · remote · no sign-in to list tools · v1.1.0 · published by GitHub user rosarioV25

Paid email, DNS, mail-security and RDAP intelligence for agents over x402.

Changes · 2
CompareRegistry entry

4 tools: 2 change things and 2 only read.

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 email-dns-preflight-x402 https://email-dns-preflight-x402.copper-crate.workers.dev/mcp

Tools

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

4 tools

Changes things 2Claude Code: ask
  • domain_email_securityFocused SPF/DMARC/DKIM/BIMI diagnostics with bounded recursive SPF lookup analysis, CAA/DNSSEC context and deterministic fixes.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
    Focused SPF/DMARC/DKIM/BIMI diagnostics with bounded recursive SPF lookup analysis, CAA/DNSSEC context and deterministic fixes. Costs $0.001 native USDC on Base.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
  • domain_rdapPrivacy-safe RDAP/WHOIS-successor lookup for domain age, expiry, registrar, statuses, nameservers and DNSSEC delegation.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
    Privacy-safe RDAP/WHOIS-successor lookup for domain age, expiry, registrar, statuses, nameservers and DNSSEC delegation. Costs $0.001 native USDC on Base.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
Only reads 2Claude Code: allow
  • domain_preflightInspect DNS records, CAA, SPF/DMARC/DKIM/BIMI, DNSSEC, RDAP age/expiry, registrar-lock and nameserver-redundancy posture.No findings

    Why it is in this group

    • The description's first verb is "inspect": a word for reading.
    Description, as the server wrote it
    Inspect DNS records, CAA, SPF/DMARC/DKIM/BIMI, DNSSEC, RDAP age/expiry, registrar-lock and nameserver-redundancy posture. Costs $0.001 native USDC on Base.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
  • email_preflightValidate practical email syntax and inspect DNS, mail routing, authentication and domain-security posture.No findings

    Why it is in this group

    • The description's first verb is "validate": a word for reading.
    Description, as the server wrote it
    Validate practical email syntax and inspect DNS, mail routing, authentication and domain-security posture. DNS-level only; no SMTP mailbox-existence claim. Costs $0.001 native USDC on Base.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: 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 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http email-dns-preflight-x402 https://email-dns-preflight-x402.copper-crate.workers.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": [
      "mcp__email-dns-preflight-x402__email_preflight",
      "mcp__email-dns-preflight-x402__domain_preflight"
    ],
    "ask": [
      "mcp__email-dns-preflight-x402__domain_email_security",
      "mcp__email-dns-preflight-x402__domain_rdap"
    ],
    "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 email-dns-preflight-x402. Review it before you use it.