---
title: "Phone number"
method: GET
path: "/channel/check-phone-number"
---

# Phone number

`GET /channel/check-phone-number`

## Request

- Base URL: `https://api.crunchz.app/api`
- URL: `https://api.crunchz.app/api/channel/check-phone-number`
- Auth: OAuth 2
  - Client credentials
  - Token URL: `https://example.com/oauth2/token`
- TypeScript: <https://skmtc.dev/crunchz/apis/live-2/docs/channel/check-phone-number/get.ts> (a function with typed inputs; its response is checked against the schema)

The Check WhatsApp Number API endpoint allows you to verify if a phone number is registered on WhatsApp. This endpoint is essential for ensuring that your messages are sent to valid WhatsApp users, improving your communication efficiency.

## Query parameters

- `phone` string, required

## Response `200`

200

- object
  - `success` boolean
  - `message` string
  - `data` object
    - `is_exists` boolean
    - `contact_id` unknown

## Other responses

- `403`: 403
- `422`: 422

---

[API](https://skmtc.dev/crunchz/apis/live-2.md) - [All operations](https://skmtc.dev/crunchz/apis/live-2/llms.txt) - [OpenAPI document](https://skmtc.dev/crunchz/apis/live-2/revisions/14e6b45e8808?raw)