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Blockbuster.ai WhatsApp Validator
x402
Blockbuster.ai WhatsApp Validator is a paid API for AI agents from blockbuster-ai.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Validates whether a phone number is registered and active on WhatsApp
Price / call$0.05
Success—
StatusUnknown
How this service works
115+ premium paid endpoints: Social Media, AI/ML, E-commerce, Finance, Data Intelligence, Media, Tools. x402 micropayments on Base chain.
Output
Returns a JSON object with a success boolean and a data object indicating whether the queried phone number is registered and active on WhatsApp.
Example use cases
Example prompt
“Can you check if the phone number +14155552671 is registered on WhatsApp before I try to message them?”
Technical details
Endpoint
POSThttps://blockbuster-ai.vercel.app/api/whatsapp-validator3When to prefer
Use this endpoint when you need to verify whether a contact's phone number is active on WhatsApp before initiating outreach, building contact lists, or automating WhatsApp messaging workflows. Prefer this over manual checks or broader social media validators when the specific platform is WhatsApp and you need a programmatic, pay-per-call validation at low cost ($0.05 USDC).
Side effects
- Invalid or malformed phone number format returns an error or false validation
- Network timeout from WhatsApp lookup service
- Rate limiting or quota exceeded on the underlying API
- Missing query parameter returns a 400-level error
- Phone number in unsupported country or region may return inconclusive result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | Input parameter for the API call |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | |
| success | boolean |
Tags
x402
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