# WhatsApp Number Checker (`vero-api/whatsapp-number-checker`) Actor

Check whether phone numbers are registered on WhatsApp. Feed it a list of numbers and get back a simple yes/no for each — nothing else. Validate numbers in bulk and export to JSON, CSV, or Excel.

- **URL**: https://apify.com/vero-api/whatsapp-number-checker.md
- **Developed by:** [VeroAPIs](https://apify.com/vero-api) (community)
- **Categories:** Automation, Lead generation, Social media
- **Stats:** 38 total users, 19 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $5.00 / 1,000 number checkeds

This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## WhatsApp Number Checker

**WhatsApp Number Checker** is a minimal bulk **WhatsApp validator**: feed it a list of phone numbers and get back a simple **yes/no** for each — is the number registered on **WhatsApp** or not. No profile data, no extras. Download the results as **JSON, CSV, Excel, HTML, or XML**.

Use it to **check if a number is on WhatsApp**, clean phone lists, and verify leads before a campaign. It runs in the cloud and needs no coding.

### What does it do?

For each phone number, the Actor:

1. **Validates the phone number format** — malformed numbers are reported per-number, not lookups.
2. **Checks WhatsApp registration** — confirms whether the number is a real, registered WhatsApp account.

That's it. If you also need profile pictures, about text, and WhatsApp Business details, use the full **WhatsApp Number Checker & Validator** Actor instead.

### What data does it return?

Each result is **one row per phone number**:

| Data | Details |
|---|---|
| 📱 **Number** | the phone number that was checked, in E.164 digits |
| ✅ **Has WhatsApp** | whether the number is a registered WhatsApp account (`true` / `false`) |

A number that can't be checked (e.g. invalid format) comes back with an `error` field instead, and the run keeps going.

### Input

Provide a `numbers` array of phone numbers in international **E.164** format. Up to **50 numbers per run**.

```json
{
  "numbers": ["+14155552671", "+353830648858"]
}
```

### Output

```json
[
  { "number": "14155552671", "hasWhatsApp": true },
  { "number": "353830648858", "hasWhatsApp": false }
]
```

### Real-time API

Need checks on demand? Turn on **Standby mode** and call the actor like a live API — send a batch of numbers, get the yes/no results straight back in the HTTP response. Up to 50 numbers per request.

Every request needs your Apify token, passed as a `Bearer` token (or a `?token=` query param).

```bash
curl -X POST "https://vero-api--whatsapp-number-checker.apify.actor/" \
  -H "Authorization: Bearer <APIFY_TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"numbers": ["+14155552671", "+353830648858"]}'
```

The response is JSON: a `results` array (one entry per number, same fields as the dataset) plus `checked` and `skipped` counts.

# Actor input Schema

## `numbers` (type: `array`):

Phone numbers to check, in international E.164 format (e.g. +14155552671). Invalid formats are reported per-number without stopping the run. Up to 50 numbers per run.

## Actor input object example

```json
{
  "numbers": [
    "+15558681494",
    "+353830648858"
  ]
}
```

# Actor output Schema

## `results` (type: `string`):

One row per checked phone number.

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "numbers": [
        "+15558681494",
        "+353830648858"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("vero-api/whatsapp-number-checker").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "numbers": [
        "+15558681494",
        "+353830648858",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("vero-api/whatsapp-number-checker").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "numbers": [
    "+15558681494",
    "+353830648858"
  ]
}' |
apify call vero-api/whatsapp-number-checker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=vero-api/whatsapp-number-checker",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/LYw8FJeXRRM1o0Pca/builds/QmzMe9ye18vu3DloO/openapi.json