# klymax402 Batch Email Verification API

> klymax402 Batch Email Verification API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).

Verifies up to 100 email addresses in a single batch call, returning validity counts and per-email results

## Facts

- Endpoint: GET https://klymax402.com/api/email-verification/api/verify/batch
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-batch-email-verification-api-315838c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l5MGrP5ujeRMkUqatIngH

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-batch-email-verification-api-315838c4
```

Example prompt: Can you verify these email addresses and tell me which ones are valid: user@example.com, bad-email@, test@domain.org, and notanemail? I need to know how many are valid before I send my campaign.

## When to prefer this

Choose this endpoint when you need to validate multiple email addresses in one round trip (up to 100), paying only $0.03 USDC per batch call. It is ideal for bulk list hygiene, pre-send validation, or CRM cleanup scenarios where per-email API calls would be costly or slow. Prefer this over single-email validators when processing lists of more than a few addresses.

## Known failure modes

- Array exceeds 100 email limit — may return an error or silently truncate
- Malformed input array — missing or incorrectly typed emails field returns an error
- Payment failure via x402 — call not processed if USDC balance is insufficient
- Network timeout for very large batches near the 100-email limit
- Disposable or catch-all domains may not be accurately classified

## 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

Returns a JSON object with a total count of submitted emails, a valid_count, an invalid_count, and a results array containing per-email verification outcomes indicating whether each address is valid or invalid.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "emails": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Array of email addresses (max 100)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 1,
  "results": [],
  "valid_count": 1,
  "invalid_count": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-batch-email-verification-api-315838c4/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)