Email DNS Preflight x402

io.github.rosarioV25Published by GitHub account rosarioV25v1.1.0Updated Oct 24, 2026

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

The publisher's own server: Preflight

VerifiedStreamable HTTPWeb executableWeb Search & ScrapingSecurity & Monitoring

Overview

AI-generated overview

A remote MCP server that lets an assistant run paid email and domain DNS preflight checks, mail-security diagnostics and RDAP lookups.

What you can do
Check an email address for syntax and DNS-level mail routing and authentication posture, without claiming mailbox existence. Inspect a domain's DNS records, CAA, SPF/DMARC/DKIM/BIMI, DNSSEC, RDAP age and expiry, registrar lock and nameserver redundancy. Run focused SPF/DMARC/DKIM/BIMI diagnostics with bounded recursive SPF analysis and suggested fixes. Look up privacy-safe RDAP data such as domain age, expiry, registrar, statuses, nameservers and DNSSEC delegation.
When to use it
Useful when an assistant needs to vet an email address or domain before outreach, onboarding or sending, or to audit a domain's mail authentication and registration posture without doing the DNS and RDAP work by hand.
Requirements
A remote streamable HTTP endpoint; no local runtime, account, API key or header is declared. Each tool call costs $0.001 in native USDC on Base, so a funded wallet and x402 payment handling are needed. Network access to the endpoint and to DNS and RDAP sources is implied.
Before you install
Every tool call spends $0.001 in USDC on Base, so costs accumulate with use and require a wallet with funds. Checks are DNS-level only and make no SMTP mailbox-existence claim. Domain and email queries are sent to a third-party hosted service.

Installation

In SourceWeft

  1. Open Email DNS Preflight x402 in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.rosarioV25%2Femail-dns-preflight-x402/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "email-dns-preflight-x402": {
      "type": "http",
      "url": "https://email-dns-preflight-x402.copper-crate.workers.dev/mcp"
    }
  }
}

Tools

4

email_preflight

Email DNS Preflight

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.

Parametersemailrequired

domain_preflight

Domain DNS Preflight

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.

Parametersdomainrequired

domain_email_security

Domain Email Security

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.

Parametersdomainrequired

domain_rdap

Domain Age and RDAP

Privacy-safe RDAP/WHOIS-successor lookup for domain age, expiry, registrar, statuses, nameservers and DNSSEC delegation. Costs $0.001 native USDC on Base.

Parametersdomainrequired

Version history

1
  1. v1.1.0LatestSep 30, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.

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