curl --request GET \
  --url https://api.lemlist.com/api/v2/tasks \
  --header 'Authorization: Basic <encoded-value>'

import requests

url = "https://api.lemlist.com/api/v2/tasks"

headers = {"Authorization": "Basic <encoded-value>"}

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

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Basic <encoded-value>'}};

fetch('https://api.lemlist.com/api/v2/tasks', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

require 'uri'
require 'net/http'

url = URI("https://api.lemlist.com/api/v2/tasks")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Basic <encoded-value>'

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

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.lemlist.com/api/v2/tasks",
  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: Basic <encoded-value>"
  ],
]);

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

curl_close($curl);

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

{
  "results": [
    {
      "_id": "opp_A1B2C3D4E5F6G7H8I",
      "objectType": "contact",
      "recordId": "ctc_A1B2C3D4E5F6G7H8I",
      "contactId": "ctc_A1B2C3D4E5F6G7H8I",
      "companyId": "cmp_A1B2C3D4E5F6G7H8I",
      "leadId": "lea_A1B2C3D4E5F6G7H8I",
      "campaignId": "cam_A1B2C3D4E5F6G7H8I",
      "assignedTo": "usr_A1B2C3D4E5F6G7H8I",
      "title": "Call John Doe",
      "message": "Ask about the new pricing",
      "text": null,
      "type": "phone",
      "channel": "aircall",
      "status": "due",
      "priority": 2,
      "dueDate": "2026-01-12T09:00:00.000Z",
      "completedAt": null,
      "manual": true,
      "ownerName": "Jane Smith",
      "campaign": {
        "id": "cam_A1B2C3D4E5F6G7H8I",
        "name": "Q1 outbound",
        "sequenceId": "seq_A1B2C3D4E5F6G7H8I"
      },
      "leadFirstName": "John",
      "leadLastName": "Doe",
      "leadCompanyName": "Acme Inc"
    }
  ],
  "total": 1,
  "limit": 50,
  "page": 1
}

{
  "success": false,
  "error": {
    "code": "UNKNOWN_FIELD",
    "message": "Unknown filter field: contactFoo"
  }
}

{
  "success": false,
  "error": {
    "code": "ROUTE_UNAUTHORIZED",
    "message": "Unauthorized"
  }
}

{
  "error": "Method not allowed"
}

{
  "success": false,
  "error": {
    "code": "SEARCH_FAILED",
    "message": "Failed to search tasks"
  }
}