# x402-tools Email Validate

> x402-tools Email Validate is a paid API for AI agents from x402.nichospt.net, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Validates an email address for syntax, MX records, disposability, and deliverability via a pay-per-call API settled in USDC

## Facts

- Endpoint: POST https://x402.nichospt.net/email-validate?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-email-validate-9c9b8a67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jHNY5o2QJ_m_GEZa2ic44

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 x402-tools-email-validate-9c9b8a67 -d '<json body>'
```

Example prompt: Can you check whether user@gmail.com is a real, deliverable email address — tell me if it has valid MX records, whether it's disposable, and if it's from a free provider?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call email validation check with MX record lookup, disposable email detection, and deliverability hints — especially in agent workflows where you only pay for what you use and need real-time validation without a subscription. Prefer this over form-only regex validation when deliverability and disposable detection matter.

## Known failure modes

- Missing or malformed email input returns a validation error
- Non-existent domain may return mx_found: false and deliverable_hint: false
- Payment failure via x402 protocol results in 402 response before processing
- Rate limiting or service unavailability returns 5xx errors
- Temporary DNS lookup failures may produce inconclusive MX results

## How this service works

Pay-per-call utility APIs for AI agents, settled in USDC via the x402 protocol.

## Output

Returns a JSON object containing the original email, parsed local part and domain, whether MX records were found and their details, syntax validity, whether it's a disposable address, whether it's from a free email provider, and a deliverability hint indicating if the address is likely to accept mail.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "description": "Email address to validate"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "email": "user@gmail.com",
  "local": "user",
  "domain": "gmail.com",
  "mx_found": true,
  "disposable": false,
  "mx_records": [
   {
    "exchange": "gmail-smtp-in.l.google.com",
    "priority": 5
   }
  ],
  "valid_syntax": true,
  "free_provider": true,
  "deliverable_hint": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-email-validate-9c9b8a67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.nichospt.net](https://www.zero.xyz/host/x402.nichospt.net/llms.txt)