# Blockbuster.ai WhatsApp Validator

> 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 2026-10-17).

Validates whether a given phone number is a registered and active WhatsApp account

## Facts

- Endpoint: POST https://blockbuster-ai.vercel.app/api/whatsapp-validator?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockbuster-ai-whatsapp-validator-e733ae22
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0wAQMBvtb78B0tM0NnC-d

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 blockbuster-ai-whatsapp-validator-e733ae22 -d '<json body>'
```

Example prompt: Can you check if the phone number +14155552671 is actually registered on WhatsApp before I add them to my outreach list?

## When to prefer this

Use this endpoint when you need to verify whether a specific phone number is registered on WhatsApp before initiating messaging campaigns, building contact lists, or routing communications. Prefer this over manual checking or alternative validators when you need a programmatic, pay-per-use solution integrated with x402 micropayments on Base chain.

## Known failure modes

- Invalid or malformed phone number format returns an error or false result
- Number not on WhatsApp returns success:true but data indicating not registered
- Payment failure via x402 micropayment returns 402 status blocking the request
- Rate limiting or downstream WhatsApp API issues may return service unavailable
- Missing or empty query parameter may cause a 400 bad request

## 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 provided phone number is a registered and active WhatsApp account.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Input parameter for the API call"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockbuster-ai-whatsapp-validator-e733ae22/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockbuster-ai.vercel.app](https://www.zero.xyz/host/blockbuster-ai.vercel.app/llms.txt)