# EchoEmpire Email MX Lookup & Validation

> EchoEmpire Email MX Lookup & Validation is a paid API for AI agents from echoempire-demand-gateway.echoempire-in-co.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).

Validates an email address by checking MX records, syntax, disposability, and deliverability — pay-per-call via USDC with no account required.

## Facts

- Endpoint: GET https://echoempire-demand-gateway.echoempire-in-co.workers.dev/v1/email-mx?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/echoempire-email-mx-lookup-validation-f0b9872b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_k-kdanyYtOfe797jcXseG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability echoempire-email-mx-lookup-validation-f0b9872b
```

Example prompt: Can you check whether jane@example.com is a real, deliverable email address — specifically whether it has valid MX records, passes syntax checks, and isn't a disposable or role-based address?

## When to prefer this

Choose this endpoint when you need a single-call, no-signup email validation with MX record data, deliverability verdict, and disposable/role detection — especially when working in a serverless or agent context where paying $0.003 per call in USDC is preferable to maintaining an API subscription. Ideal for spot-checking individual addresses rather than bulk validation pipelines.

## Known failure modes

- Invalid or malformed email address returns syntaxValid: false with no MX data
- Domain with no MX records returns hasMx: false and a non-deliverable verdict
- Payment failure or insufficient USDC balance returns HTTP 402
- Network or DNS resolution errors may return a 500-level error
- Disposable/temporary email services are flagged but the domain may still technically resolve

## How this service works

Pay-per-call web utilities in USDC on Base via x402 — no account, no API key. Every paid call is publicly verifiable at /ledger.json.

## Output

A JSON object containing: the original email and extracted domain, a list of MX host records with priorities, boolean flags for hasMx, syntaxValid, disposable, and role, plus a human-readable verdict string (e.g. 'deliverable_domain') summarizing overall deliverability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string",
       "description": "Email address to check"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mx": [
   {
    "host": "mx.example.com",
    "priority": 10
   }
  ],
  "role": false,
  "email": "jane@example.com",
  "hasMx": true,
  "domain": "example.com",
  "verdict": "deliverable_domain",
  "disposable": false,
  "syntaxValid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/echoempire-email-mx-lookup-validation-f0b9872b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from echoempire-demand-gateway.echoempire-in-co.workers.dev](https://www.zero.xyz/host/echoempire-demand-gateway.echoempire-in-co.workers.dev/llms.txt)