curl --request GET \
  --url https://api.telli.com/v2/external/contacts/{externalId} \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.telli.com/v2/external/contacts/{externalId}"

headers = {"Authorization": "Bearer <token>"}

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

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.telli.com/v2/external/contacts/{externalId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.telli.com/v2/external/contacts/{externalId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.telli.com/v2/external/contacts/{externalId}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.telli.com/v2/external/contacts/{externalId}")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.telli.com/v2/external/contacts/{externalId}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "type": "<unknown>",
  "externalId": "<string>",
  "externalUrl": "<string>",
  "salutation": "<string>",
  "firstName": "<string>",
  "lastName": "<string>",
  "phoneNumber": "<string>",
  "timezoneIana": "<string>",
  "email": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "properties": [
    {
      "key": "<string>",
      "value": "<unknown>",
      "label": "<string>",
      "options": [
        {
          "value": "<string>",
          "label": "<string>",
          "description": "<string>"
        }
      ]
    }
  ]
}

{
  "defined": "<unknown>",
  "code": "<unknown>",
  "status": "<unknown>",
  "message": "API key is missing or invalid",
  "data": "<unknown>"
}

{
  "defined": "<unknown>",
  "code": "<unknown>",
  "status": "<unknown>",
  "message": "Contact not found",
  "data": {
    "externalId": "<string>"
  }
}