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klymax402 Phone Validation API
x402
klymax402 Phone Validation API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-13).
Validates a phone number and returns its E.164 format, country info, number type, and SMS capability
Price / call$0.008
Success—
StatusUnknown
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: whether the phone number is valid (boolean), the E.164-formatted number, the national number, country details, the number type (mobile/landline/etc.), and whether the number is SMS-capable.
Example use cases
Pre-send SMS validation
“Before we send that marketing SMS campaign, check if +33612345678 is a valid number and can actually receive SMS messages.”
User registration phone check
“A user just signed up with the phone number +447911123456 — can you verify it's a real, valid number and tell me what country it's from?”
Normalize phone number format
“I have the number 0033612345678 and I need it converted to E.164 format — can you validate and normalize it for me?”
Technical details
Endpoint
GEThttps://klymax402.com/api/phone-validation/api/validateWhen to prefer
Use this endpoint when you need a quick, pay-per-call phone validation with no API key setup, especially within an agent workflow that already uses the klymax402 multi-API MCP platform. Ideal for one-off checks or low-volume validation where signing up for a dedicated phone validation service is overkill.
Side effects
- Missing or malformed phone parameter returns an error
- Unrecognized or completely invalid phone string may return valid:false with limited detail
- Payment failure (402) if USDC balance is insufficient
- Rate limiting or network timeout from the aggregator platform
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"e164": "example",
"phone": "example",
"valid": true,
"country": {},
"numberType": "example",
"smsCapable": true,
"nationalNumber": "example"
}
}Tags
x402
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