# emailval Email Validator

> emailval Email Validator is a paid API for AI agents from x402-emailval.shablony-pro.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Validates an email address for syntax correctness, MX record existence, and disposable/throwaway domain status

## Facts

- Endpoint: GET https://x402-emailval.shablony-pro.workers.dev/validate
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/emailval-email-validator-801caf88
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_L43GF6EIqoxHNkU8_dE0m

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 emailval-email-validator-801caf88
```

Example prompt: Can you check whether john.doe@example.com is a real, deliverable email address — specifically if it passes syntax checks, has valid MX records, and isn't from a disposable email provider?

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call email validation that combines syntax checking, DNS/MX record verification, and disposable domain detection in a single call. Ideal for agents handling user signups, lead qualification, or data hygiene workflows where you want to avoid sending to bad addresses without committing to a high-volume subscription. At $0.003 per call on Base via x402, it suits low-to-medium volume use cases where cost predictability matters.

## Known failure modes

- Malformed or missing email parameter returns an error or unexpected verdict
- Domains with unusual or private DNS configurations may produce false negatives on MX checks
- Newly registered disposable domains not yet in blocklists may pass disposable check
- Network timeouts during MX DNS lookup may cause failed or inconclusive responses
- Payment failure (insufficient USDC balance) blocks the request before validation occurs

## How this service works

Email validation (syntax, MX, disposable check). x402 pay-per-call, 0.003 USDC on Base.

## Output

Returns a JSON object with a 'verdict' field (e.g. 'deliverable_likely') indicating the overall assessment, and an 'mx_found' boolean indicating whether valid MX DNS records were found for the email domain. May also include disposable domain detection status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "verdict": "deliverable_likely",
  "mx_found": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/emailval-email-validator-801caf88/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-emailval.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-emailval.shablony-pro.workers.dev/llms.txt)