Phone Number Validation API

br0ski777/phone-validation-x402

This server validates phone numbers globally using the phone-validation API at klymax402.com, exposing carrier detection, line type identification, country lookup, and E.164 formatting. It integrates x402 micropayments in USDC, so you're paying per validation request rather than subscribing to a monthly plan. Reach for this when you need to verify phone numbers in user input, clean up contact databases, or determine whether a number is mobile or landline before sending SMS. The remote SSE transport means it runs externally and bills as you use it. If you're building customer onboarding flows or contact verification systems and want global phone intelligence without maintaining your own validation infrastructure, this handles the heavy lifting.

tools: 2
transport: SSE
last updated: May 16, 2026

View on GitHub

Tools

2 tools

Public tool metadata for what this MCP can expose to an agent.

phone_validate_numberUse this when you need to validate a phone number and get carrier info. Returns structured validation data in JSON. Returns: 1. valid (boolean) 2. e164 format string 3. countryCode and countryName 4.1 params

Use this when you need to validate a phone number and get carrier info. Returns structured validation data in JSON. Returns: 1. valid (boolean) 2. e164 format string 3. countryCode and countryName 4.

Parameters* required

phonestring

Phone number to validate (e.g. +33612345678, +14155552671, 0033612345678)

phone_validate_batchUse this when you need to validate multiple phone numbers at once (up to 50). Returns an array of validation results in JSON. Returns per number: 1. valid (boolean) 2. e164 format 3. countryCode and1 params

Use this when you need to validate multiple phone numbers at once (up to 50). Returns an array of validation results in JSON. Returns per number: 1. valid (boolean) 2. e164 format 3. countryCode and

Parameters* required

phonesarray

Array of phone numbers to validate (max 50)

Readme

Phone Number Validation API

Validate phone numbers worldwide -- carrier, line type, country, E.164 format. Single and batch (50) modes. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "phone-validation": {
      "url": "https://phone-validation.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://phone-validation.api.klymax402.com/api/validate?phone=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body

View the full README on GitHub

Details

Repository: github.com/br0ski777/phone-validation-x402
Website: github.com/Br0ski777/phone-validation-x402
Category: Communication & Messaging
Transport: SSE
Registry: MCP registry, active

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Phone Number Validation API

Tools

Readme

Phone Number Validation API

Quickstart -- MCP

Quickstart -- HTTP (x402)

Details

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