curl --request GET \
  --url https://api.wsapi.chat/users/{phone}/check \
  --header 'X-Api-Key: <api-key>' \
  --header 'X-Instance-Id: <x-instance-id>'

import requests

url = "https://api.wsapi.chat/users/{phone}/check"

headers = {
    "X-Instance-Id": "<x-instance-id>",
    "X-Api-Key": "<api-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {'X-Instance-Id': '<x-instance-id>', 'X-Api-Key': '<api-key>'}
};

fetch('https://api.wsapi.chat/users/{phone}/check', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

using RestSharp;


var options = new RestClientOptions("https://api.wsapi.chat/users/{phone}/check");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("X-Instance-Id", "<x-instance-id>");
request.AddHeader("X-Api-Key", "<api-key>");
var response = await client.GetAsync(request);

Console.WriteLine("{0}", response.Content);

{
  "isInWhatsApp": true
}

{
  "status": 400,
  "detail": "invalid request body"
}

{
  "status": 401,
  "detail": "unauthorized"
}

{
  "status": 403,
  "detail": "device not paired"
}

{
  "status": 503,
  "detail": "instance not available"
}