# klymax402 Email Verification API

> klymax402 Email Verification API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Validates an email address by checking syntax, MX records, disposability, and quality score

## Facts

- Endpoint: GET https://klymax402.com/api/email-verification/api/verify
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-email-verification-api-29c8da5b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qnqzE2UVAWQnjdXv1WQoP

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 klymax402-email-verification-api-29c8da5b
```

Example prompt: Can you verify whether john.doe@tempmail.com is a real, deliverable email address — tell me if it's disposable, role-based, or from a free provider, and what its quality score is?

## When to prefer this

Use this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple regex — especially when you want to detect disposable addresses, check MX reachability, identify role-based emails, or score email quality for lead qualification. It is more thorough than syntax-only validators and returns structured signals useful for agent decision logic.

## Known failure modes

- Missing or malformed email parameter returns an error
- Domains with no public MX records may incorrectly appear invalid
- Disposable email provider lists may be outdated, missing newer services
- Network timeouts during MX lookup may cause failures
- Very new domains may not yet resolve correctly

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

A JSON object containing: whether the email is valid, the parsed domain, a human-readable reason for the verdict, syntax check result, MX record existence and list, whether the address is disposable, role-based, or from a free provider, and a numeric quality score between 0 and 1.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "description": "Email address to verify (e.g. user@example.com)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "email": "example",
  "valid": true,
  "domain": "example",
  "reason": "example",
  "syntax": true,
  "mx_found": true,
  "disposable": true,
  "mx_records": [],
  "role_based": true,
  "free_provider": true,
  "quality_score": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-email-verification-api-29c8da5b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)