> ## Documentation Index
> Fetch the complete documentation index at: https://docs.periskope.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Check Contact Exists

> This endpoint checks if contacts exist on WhatsApp




## OpenAPI

````yaml POST /contacts/check
openapi: 3.0.3
info:
  title: API - Local
  description: >-
    #### Welcome to the official Postman collection of Periskope API


    Periskope APIs enable you automate actions on your WhatsApp phone, and the
    Periskope platform


    - Read more about the APIs & webhooks here -
    [https://docs.periskope.app/api-reference/introduction](https://docs.periskope.app/api-reference/introduction)
        
    - We encourage responsible usage of the APIs. Follow these best practices
    and recommendations for safe actions on WhatsApp -
    [https://docs.periskope.app/get-started/best-practices](https://docs.periskope.app/get-started/best-practices)
        

    #### Getting Started


    ##### Pre-requisites:


    1. **Sign up for a free account on Periskope:** To use the Periskope API,
    you need to have an active Periskope account. If you don’t have one, you can
    sign up for a 7-day free trial [here](https://console.periskope.app).
        
    2. **Scan the QR code from WhatsApp to connect your phone:** A connected
    phone is required to use the APIs
        
    3. **Go to** [Settings >
    API](https://console.periskope.app/settings/api), and generate an API key
    for your organization - The API key is used to authenticate every request.
    Please keep this secure
        

    ##### Using Postman:


    1. **Fork the collection so you can edit values and test the APIs in your
    own postman environment:** To fork the collection, click on the three dots
    next to v1. Then click on create a fork (_shortcut: Ctrl + Alt + F)._
        
    2. **Update the value of the variables in the collection:**  
        \- Update the API key with the key generated in Step 3  
        \- Update the phone number with your connected number. This number will be added to the `x-phone` header across requests
        
        It must be in the format of country code+number, with no special characters or spaces _e.g. +91 98745 32456 becomes 919874532456_
        

    For any help or feedback, please contact us at
    [support@periskope.app](https://mailto:support@periskope.app), or ping us on
    [WhatsApp](https://what.sapp.link/periskope)
  version: 1.0.0
  contact: {}
servers:
  - url: https://api.periskope.app/v1
security:
  - bearerAuth: []
tags:
  - name: contacts
  - name: tickets
  - name: tasks
  - name: phones
  - name: message
  - name: queue
  - name: chats
  - name: group
  - name: members
  - name: webhooks
paths:
  /contacts/check:
    post:
      tags:
        - contacts
      summary: Check Contact Exists
      description: |
        This endpoint checks if contacts exist on WhatsApp
      operationId: checkContact
      parameters:
        - name: x-phone
          in: header
          schema:
            type: string
            example: '{{orgPhone}}'
          description: >-
            Please provide the number of the phone you want to call with this
            API in the header. The number must be in country code + number
            format without any characters or spaces, e.g. 919876543210;
            Alternatively, provide the phone_id (phone-xxxxxxxxxxxx) in the
            header
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - contact_ids
              properties:
                contact_ids:
                  type: array
                  items:
                    type: string
                  description: >-
                    - Array of contact IDs to check. Must be formatted as
                    country_code + number (e.g., 918527184400). It should be a
                    non-empty array
                  example:
                    - '919537851844'
                    - '919876543210'
            examples:
              Check Contact:
                value:
                  contact_ids:
                    - '919537851844'
                    - '919876543210'
      responses:
        '200':
          description: 200 OK
          headers:
            Access-Control-Allow-Origin:
              schema:
                type: string
                example: '*'
            Connection:
              schema:
                type: string
                example: keep-alive
            Content-Length:
              schema:
                type: string
                example: '112'
            Date:
              schema:
                type: string
                example: Mon, 20 Jan 2025 15:21:32 GMT
            ETag:
              schema:
                type: string
                example: W/"12ac-FKWux6AG8sEdnaM5gz/o+6nWcZY"
            Keep-Alive:
              schema:
                type: string
                example: timeout=5
            X-Powered-By:
              schema:
                type: string
                example: Express
            X-RateLimit-Limit:
              schema:
                type: string
                example: '10'
            X-RateLimit-Remaining:
              schema:
                type: string
                example: '9'
            X-RateLimit-Reset:
              schema:
                type: string
                example: '1737386494'
            x-periskope-org-id:
              schema:
                type: string
                example: 2997dd64-89bf-48d3-9a22-b314fca017e5
            x-periskope-phone-id:
              schema:
                type: string
                example: phone-bqzvyibhmwkaergr
            x-periskope-trace-id:
              schema:
                type: string
                example: 3a75d970-d742-11ef-af23-09e9e991f0f8
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  properties:
                    contact_id:
                      type: string
                      description: The contact_id of the contact
                      example: '919537851844'
                    exists:
                      type: boolean
                      description: Whether the contact exists on WhatsApp
                      example: true
              examples:
                200 OK:
                  value:
                    - contact_id: 919537851844@c.us
                      exists: true
                    - contact_id: 919876543210@c.us
                      exists: false
      x-codeSamples:
        - lang: TypeScript
          label: Node.js
          source: |-
            import { PeriskopeApi } from '@periskope/periskope-client';

            const client = new PeriskopeApi({
              authToken: 'YOUR_API_KEY',
              phone: 'YOUR_PHONE_NUMBER', // e.g., '919876543210'
            });

            async function checkContact() {
              const response = await client.contact.checkExists({
                contact_ids: ['919537851844', '919876543210']
              });

              console.log(response);
            }

            checkContact();
        - lang: cURL
          label: cURL
          source: |-
            curl -X POST \
              https://api.periskope.app/v1/contacts/check \
              -H 'Authorization: Bearer <token>' \
              -H 'Content-Type: application/json' \
              -H 'x-phone: YOUR_PHONE_NUMBER' \
              -d '{
                "contact_ids": ["919537851844", "919876543210"]
              }'
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer

````