Email Infra

liveReference

Email Infrastructure MCP — deliverability brain for a recipient domain.

6tools
0msauth
free tier50 calls/day

Tools

mx_gateway

Identify which secure email gateway fronts a domain's inbound mail — M365, Google Workspace, Mimecast,

No parameters required.

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mx_gateway_batch

Run mx_gateway over up to 25 domains at once and return a per-domain breakdown plus a cohort tally by

No parameters required.

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auth_grade

Grade a domain's email-authentication posture: SPF (real RFC 7208 DNS-lookup count via include/redirect

No parameters required.

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domain_age

Registration age of a domain via RDAP (reuses the @pipeworx/rdap pack's IANA-bootstrap RDAP client — the

No parameters required.

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sending_domain_audit

One-call sending-domain risk audit: combines mx_gateway, auth_grade and domain_age, plus DNS/HTTP-only risk

No parameters required.

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dnsbl_check

Check a domain or IP against Spamhaus DQS and/or SURBL DNSBLs. BYOK ONLY — requires an API key: Spamhaus DQS

No parameters required.

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Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash
curl -X POST https://gateway.pipeworx.io/email-infra/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash
curl -X POST https://gateway.pipeworx.io/email-infra/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"mx_gateway","arguments":{}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("mx_gateway", {});
ask_pipeworx
// Or ask in plain English:
const answer = await px.ask("email infrastructure mcp — deliverability brain for a recipient domain");