Email DNS Preflight

Email authentication plus DNS/domain-security posture for agents: SPF/DMARC/DKIM/BIMI, CAA/DNSSEC, RDAP age/expiry, registrar-lock and nameserver-redundancy…

Agent by Email DNS Preflight

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Install

From the package registry. Read the repository before you give any tool access to your data.

{
  "agentCard": "https://email-dns-preflight-x402.copper-crate.workers.dev/.well-known/agent-card.json"
}

Point an A2A client at this agent card.

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About

Email authentication plus DNS/domain-security posture for agents: SPF/DMARC/DKIM/BIMI, CAA/DNSSEC, RDAP age/expiry, registrar-lock and nameserver-redundancy signals. DNS-level only; no SMTP mailbox-existence or inbox-delivery claim.

Use cases: security-scanning

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Fact sheet

Where you use it: API
Hosting: Hosted by the vendor
Interfaces: a2a
A2A agent card: https://email-dns-preflight-x402.copper-crate.workers.dev/.well-known/agent-card.json

Details

Version: 1.0.0
License: License unknown
Website: email-dns-preflight-x402.copper-crate.workers.dev
Docs: email-dns-preflight-x402.copper-crate.workers.dev/skill.md
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: A2A agent card

Cite this page

Email DNS Preflight. Agent Mart. https://agentmart.dev/agents/email-dns-preflight-email-dns-preflight-x402-copper-crate-workers-dev (last updated 2026-10-24)