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Email Deliverability Audit API

br0ski777/email-deliverability-x402

Gives Claude a quick way to check if your email setup will actually land in inboxes. It audits SPF, DKIM, DMARC, and MX records for any domain and returns a 0-100 deliverability score. The server connects via SSE to a remote API at klymax402.com. You'd use this when debugging why emails are hitting spam folders, during domain migrations, or as part of automated checks before launching a campaign. The scoring gives you a single number to track rather than manually parsing DNS records and trying to figure out what's misconfigured.

tool
1
transport
SSE
last updated
May 16, 2026
View on GitHub

Tools

1 tools

Public tool metadata for what this MCP can expose to an agent.

email_audit_deliverabilityUse this when you need to audit email deliverability for a domain. Checks SPF record validity, DKIM selectors (google, default, selector1), DMARC policy, and MX records. Returns a deliverability score1 params

Use this when you need to audit email deliverability for a domain. Checks SPF record validity, DKIM selectors (google, default, selector1), DMARC policy, and MX records. Returns a deliverability score

Parameters* required
domainstring
Domain to audit (e.g. example.com, gmail.com)

Sponsors

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Readme

Email Deliverability Audit API

MCP Server x402 License: MIT

Email deliverability audit for any domain. SPF, DKIM, DMARC, MX validation with score 0-100 and fix recommendations. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "email-deliverability": {
      "url": "https://email-deliverability.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://email-deliverability.api.klymax402.com/api/audit?domain=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body

View the full README on GitHub

Details

Repository
github.com/br0ski777/email-deliverability-x402
Website
github.com/Br0ski777/email-deliverability-x402
Category
Communication & Messaging
Transport
SSE
Registry
MCP registry, active

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