# Delx Commerce Email Validate

> Delx Commerce Email Validate is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Validates an email address by checking syntax, DNS A records, MX records, and deliverability likelihood, returning normalized form and verification details.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/email-validate?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-email-validate-05197c79
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XteCljni0lwIQfTKgqV9t

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 delx-commerce-email-validate-05197c79 -d '<json body>'
```

Example prompt: Can you check whether 'jane.doe@acmecorp.com' is a real, deliverable email address — verify the syntax, DNS records, and MX servers?

## When to prefer this

Choose this endpoint when you need a fast, pay-per-call email validation with DNS-level verification (A and MX record checks) and no signup friction. Ideal for agents needing real-time deliverability checks on individual addresses with verifiable, microtransaction-based billing in USDC. Prefer over bulk email verification services when operating in agentic, pay-as-you-go workflows on Base or Solana.

## Known failure modes

- Invalid or malformed email string returns syntax_valid false with no DNS data
- Domain has no MX records — likely_deliverable false even if syntax is valid
- DNS lookup timeout if timeout parameter is set too low (min 1s, max 15s)
- Non-existent domain returns empty A and MX record arrays
- Payment failure via x402 protocol prevents API call from completing
- Network/upstream DNS resolver errors may cause intermittent failures

## How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

## Output

Returns a JSON object with: syntax_valid (boolean), likely_deliverable (boolean), normalized email string, domain name, list of A record IP addresses for the domain, and list of MX records with priorities. Also includes tool_name identifier.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string"
  },
  "timeout": {
   "type": "integer",
   "maximum": 15,
   "minimum": 1,
   "description": "Per-network-phase cap; the whole tool shares a 8-second active budget including resolution and fallbacks. Not an end-to-end latency SLA."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "domain": "example.com",
   "a_records": [
    "93.184.216.34"
   ],
   "mx_records": [
    "10 mx.example.com."
   ],
   "normalized": "agent@example.com",
   "syntax_valid": true,
   "likely_deliverable": true
  },
  "tool_name": "util_email_validate"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-email-validate-05197c79/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commerce.delx.ai](https://www.zero.xyz/host/commerce.delx.ai/llms.txt)