Check phone is on WhatsApp

GET

https://wawp.net/wp-json/awp/v1/contacts/check-exists

Verifies if a specific phone number is registered on WhatsApp.
This is a crucial step before sending messages to ensure the recipient actually has a valid WhatsApp account, which helps prevent bans and message failures.

Developer Tips:

Phone Format: Send the phone number with the country code but without any +, spaces, dashes, or parentheses (e.g., 1234567890).

Validation: If numberExists returns false, do not attempt to send messages to that number.

Request

Query Params

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location --request GET 'https://wawp.net/wp-json/awp/v1/contacts/check-exists?instance_id=1234567890&access_token=1234567890&phone=1234567890'

Responses

🟢200Success

application/json

Body

Example

{
    "numberExists": true,
    "chatId": "1234567890@c.us"
}

Modified at 2026-01-03 02:48:38

Get basic contact info

Get contact “about”