# Email Address Validation

> Email Address Validation is a paid API for AI agents from skinwinking.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).

Validates an email address for format correctness, MX record existence, and disposable/temporary email detection

## Facts

- Endpoint: GET https://skinwinking.com/api/v1/web/email-validate?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-address-validation-890a998a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uBGo8SzKbMTKJG4QwRhav

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 email-address-validation-890a998a
```

Example prompt: Can you check whether john.doe@example.com is a real, valid email address — specifically whether it has working mail servers and isn't from a disposable email service?

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-use email validation check that covers syntax, MX record existence, and disposable email detection in a single call. Ideal for agents that need to validate individual email addresses at the point of collection without maintaining an in-house validation service. At $0.001 USDC per call it is cost-effective for sporadic or moderate-volume checks. Prefer a dedicated bulk email verification service if processing thousands of addresses in a batch.

## Known failure modes

- Missing 'email' query parameter returns an error
- Malformed email string may return valid:false with no MX check
- Unresolvable domain may return mx:false
- Rate limiting or payment failure (x402) if USDC balance is insufficient
- Transient DNS lookup failures may produce incorrect mx results

## How this service works

50 pay-per-call tools for agents over x402 (USDC on Base, Polygon, Solana): crypto market data, token audits, indicators, swap routing, web extraction, DNS/WHOIS/email checks, FX, weather and AI text/image tools.

## Output

Returns a JSON object with three boolean fields: 'valid' (whether the email is syntactically correct), 'mx' (whether the domain has valid MX records indicating it can receive email), and 'disposable' (whether the address belongs to a known temporary or throwaway email provider).

## 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"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mx": true,
  "valid": true,
  "disposable": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-address-validation-890a998a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from skinwinking.com](https://www.zero.xyz/host/skinwinking.com/llms.txt)