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KiteEndpoints.ai - WhatsApp Phone Number Validator
x402
KiteEndpoints.ai - WhatsApp Phone Number Validator is a paid API for AI agents from kite-hub-v2.vercel.app, paid per call via x402, $0.12/call, status unknown (last checked 2026-09-14).
Validates whether a phone number has an active WhatsApp account
Price / call$0.12
Success—
StatusUnknown
How this service works
400+ paid API endpoints. Social media, AI, crypto, finance, weather, ecommerce, tools. Pay per request with USDC on Base chain.
Output
Returns a result object indicating whether the given phone number has an active WhatsApp account, along with associated validation data about the number's status.
Example use cases
Verify customer contacts before WhatsApp campaign
“I'm about to launch a WhatsApp marketing campaign to our customer list. Can you quickly check which of these phone numbers actually have active WhatsApp accounts so we don't waste messages on invalid contacts?”
Validate international leads for messaging
“We just got a batch of leads from different countries for our support team. Before we start adding them to our WhatsApp outreach workflow, can you verify that these phone numbers are actually registered on WhatsApp?”
Check prospect availability on WhatsApp
“I'm preparing to reach out to some prospects for a sales call. Can you validate that their phone numbers have active WhatsApp accounts so I know the best way to contact them?”
Technical details
Endpoint
POSThttps://kite-hub-v2.vercel.app/api/whatsapp-validatorWhen to prefer
Use this endpoint when you need to verify whether a phone number is reachable via WhatsApp before initiating messaging campaigns, customer outreach, or adding contacts to a WhatsApp-based communication flow. Useful for pre-validating contact lists to reduce failed message delivery rates.
Side effects
- Invalid phone number format returns error
- Number not found on WhatsApp returns negative validation
- Payment failure (insufficient USDC) blocks the request
- Malformed request body returns 400-level error
- External WhatsApp API downtime may cause timeout or 503
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| result | object | API response data |
Tags
x402
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