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

# List Contact Lists

> List all contact lists in your account with optional pagination using the AutoSend API.

<RequestExample>
  ```bash cURL theme={null}
  curl --request GET \
    --url 'https://api.autosend.com/v1/contact-lists?type=list' \
    --header 'Authorization: Bearer <token>'
  ```

  ```python Python theme={null}
  import requests

  url = "https://api.autosend.com/v1/contact-lists"

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

  params = {
      "type": "list"
  }

  response = requests.get(url, headers=headers, params=params)
  print(response.json())
  ```

  ```javascript JavaScript theme={null}
  fetch('https://api.autosend.com/v1/contact-lists?type=list', {
    method: 'GET',
    headers: {
      'Authorization': 'Bearer <token>'
    }
  })
    .then(response => response.json())
    .then(data => console.log(data))
    .catch(error => console.error('Error:', error));
  ```

  ```php PHP theme={null}
  <?php

  $url = 'https://api.autosend.com/v1/contact-lists?type=list';

  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_HTTPHEADER, [
      'Authorization: Bearer <token>'
  ]);

  $response = curl_exec($ch);
  curl_close($ch);

  echo $response;
  ?>
  ```

  ```go Go theme={null}
  package main

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

  func main() {
      url := "https://api.autosend.com/v1/contact-lists?type=list"

      req, _ := http.NewRequest("GET", url, nil)
      req.Header.Set("Authorization", "Bearer <token>")

      client := &http.Client{}
      resp, err := client.Do(req)
      if err != nil {
          fmt.Println("Error:", err)
          return
      }
      defer resp.Body.Close()

      body, _ := io.ReadAll(resp.Body)
      fmt.Println(string(body))
  }
  ```

  ```java Java theme={null}
  import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.net.HttpURLConnection;
  import java.net.URL;

  public class ListContactLists {
      public static void main(String[] args) {
          try {
              URL url = new URL("https://api.autosend.com/v1/contact-lists?type=list");
              HttpURLConnection con = (HttpURLConnection) url.openConnection();

              con.setRequestMethod("GET");
              con.setRequestProperty("Authorization", "Bearer <token>");

              BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
              String inputLine;
              StringBuilder content = new StringBuilder();
              while ((inputLine = in.readLine()) != null) {
                  content.append(inputLine);
              }
              in.close();
              con.disconnect();

              System.out.println(content.toString());
          } catch (Exception e) {
              e.printStackTrace();
          }
      }
  }
  ```

  ```ruby Ruby theme={null}
  require 'net/http'
  require 'uri'

  uri = URI('https://api.autosend.com/v1/contact-lists?type=list')

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

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

  response = http.request(request)
  puts response.body
  ```
</RequestExample>

<ResponseExample>
  ```json Response theme={null}
  {
    "success": true,
    "data": {
      "contacts": [
        {
          "id": "GLOBAL_CONTACT_LIST",
          "name": "All Contacts",
          "description": "All contacts in the project",
          "type": "list",
          "contactCount": 1250
        },
        {
          "id": "60d5ec49f1b2c72d9c8b4567",
          "name": "Newsletter Subscribers",
          "description": "Users who signed up for the weekly newsletter",
          "type": "list",
          "contactCount": 340,
          "createdAt": "2026-01-15T10:30:00.000Z",
          "updatedAt": "2026-02-20T14:45:00.000Z"
        },
        {
          "id": "60d5ec49f1b2c72d9c8b9876",
          "name": "Active Users",
          "description": "Segment of users who opened an email in the last 30 days",
          "type": "segment",
          "contactCount": 890,
          "filterCriteria": {
            "logicalOperator": "AND",
            "groups": [
              {
                "field": "lastActivity",
                "fieldType": "date",
                "operator": "after",
                "value": "2026-02-17T00:00:00.000Z"
              }
            ]
          },
          "createdAt": "2026-02-01T08:15:00.000Z",
          "updatedAt": "2026-03-01T11:20:00.000Z"
        }
      ]
    }
  }
  ```
</ResponseExample>

***

### Authorizations

<ParamField path="Authorizations" type="string | header" required>
  Bearer authentication header of the form Bearer `<token>`, where `<token>` is your auth token.
</ParamField>

### Query Parameters

<ParamField path="type" type="string">
  Filter contact lists by type.

  Allowed values: `list`, `segment`

  Example: `"list"`
</ParamField>

### Response

<span className="text-sm">Contact lists retrieved successfully</span>

<ResponseField name="success" type="boolean">
  Indicates if the request was successful

  Example: `true`
</ResponseField>

<ResponseField name="data" type="object">
  <Expandable title="child attributes">
    <ResponseField name="data.contacts" type="object[]">
      Array of contact list objects. The virtual "All Contacts" list is always prepended as the first item with ID `GLOBAL_CONTACT_LIST`.

      <Expandable title="child attributes">
        <ResponseField name="id" type="string">
          Unique contact list identifier. The global list uses the special ID `GLOBAL_CONTACT_LIST`.

          Example: `"60d5ec49f1b2c72d9c8b4567"`
        </ResponseField>

        <ResponseField name="name" type="string">
          Name of the contact list

          Example: `"Newsletter Subscribers"`
        </ResponseField>

        <ResponseField name="description" type="string">
          Description of the contact list

          Example: `"Users who signed up for the weekly newsletter"`
        </ResponseField>

        <ResponseField name="type" type="string">
          Type: `list` or `segment`

          Example: `"list"`
        </ResponseField>

        <ResponseField name="contactCount" type="integer">
          Number of contacts in the list

          Example: `340`
        </ResponseField>

        <ResponseField name="filterCriteria" type="object">
          Filter criteria (for segments only)
        </ResponseField>

        <ResponseField name="parentId" type="string">
          Parent list ID (if sub-segment)
        </ResponseField>

        <ResponseField name="createdAt" type="string">
          ISO 8601 timestamp of creation

          Example: `"2026-01-15T10:30:00.000Z"`
        </ResponseField>

        <ResponseField name="updatedAt" type="string">
          ISO 8601 timestamp of last update

          Example: `"2026-02-20T14:45:00.000Z"`
        </ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>


## OpenAPI

````yaml GET /contact-lists
openapi: 3.1.0
info:
  title: AutoSend API
  description: AutoSend REST API for managing contact lists and segments
  version: 1.0.0
servers:
  - url: https://api.autosend.com/v1
security:
  - bearerAuth: []
paths:
  /contact-lists:
    get:
      summary: List Contact Lists
      description: Retrieves all contact lists and segments for the authenticated project.
components: {}

````