# klymax402 Batch Phone Number Validation

> klymax402 Batch Phone Number Validation is a paid API for AI agents from klymax402.com, paid per call via x402, $0.035/call, status unknown (last checked 2026-09-15).

Validates up to 50 phone numbers at once, returning per-number validity status and summary counts

## Facts

- Endpoint: GET https://klymax402.com/api/phone-validation/api/validate/batch
- Price: $0.035/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-batch-phone-number-validation-624c1979
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pGJNNnt1GtMzGZJ3v9FZp

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-phone-number-validation-624c1979
```

Example prompt: Can you validate these phone numbers for me and tell me which ones are valid: +14155552671, +442071234567, +33123456789, 555-invalid, and +81312345678?

## When to prefer this

Use this endpoint when you need to validate multiple phone numbers in a single API call (up to 50) to minimize cost and latency compared to calling a single-number validator repeatedly. Ideal for contact list hygiene, lead qualification, CRM cleanup, or any workflow where you have a list of numbers to verify in bulk. At $0.035 per call regardless of batch size, it is far more cost-efficient than per-number validation when processing 2–50 numbers at once.

## Known failure modes

- Batch exceeds 50 phone numbers — request will be rejected or truncated
- Malformed phone number strings that can't be parsed — marked invalid in results
- Empty array input — returns zero counts
- Network timeout for large batches — retry recommended
- Invalid JSON input format — returns error response

## 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 total count of numbers submitted, count of valid numbers, count of invalid numbers, and a results array with per-number validation details for each phone number in the batch.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "phones": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Array of phone numbers to validate (max 50)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "total": 1,
  "valid": 1,
  "invalid": 1,
  "results": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-batch-phone-number-validation-624c1979/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)