List Contacts

Add or remove contacts from a contact list. Contacts can belong to multiple lists simultaneously.

Add Contacts to List

Add one or more contacts to a list. Contacts already in the list are skipped.

Endpoint

POST /lists/:id/contacts

Returns: 200 OK

Headers

Header	Value	Required
Authorization	Bearer <your-api-key>	Yes
Content-Type	application/json	Yes

Path Parameters

Parameter	Type	Description
id	string	The list ID

Body Parameters

Parameter	Type	Required	Description
contact_ids	string[]	Yes	Array of contact IDs to add. Min: 1.

Response

{
  "message": "Contacts added to list",
  "processed": 3,
  "skipped": 1
}

Field	Type	Description
processed	number	Number of contacts newly added to the list
skipped	number	Number of contacts that were already in the list (skipped)

---

Examples

cURL

curl -X POST "https://api.arsel.sa/v1/lists/01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a/contacts" \
  -H "Authorization: Bearer be_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "contact_ids": [
      "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
      "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c",
      "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6d"
    ]
  }'

JavaScript

const listId = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a";

const response = await fetch(
  `https://api.arsel.sa/v1/lists/${listId}/contacts`,
  {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      Authorization: "Bearer be_your_api_key",
    },
    body: JSON.stringify({
      contact_ids: [
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6d",
      ],
    }),
  }
);

const result = await response.json();
console.log(`Added: ${result.processed}, Already in list: ${result.skipped}`);

Python

import requests

list_id = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a"

response = requests.post(
    f"https://api.arsel.sa/v1/lists/{list_id}/contacts",
    headers={
        "Content-Type": "application/json",
        "Authorization": "Bearer be_your_api_key",
    },
    json={
        "contact_ids": [
            "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
            "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c",
            "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6d",
        ],
    },
)

result = response.json()
print(f"Added: {result['processed']}, Already in list: {result['skipped']}")

C#

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("Authorization", "Bearer be_your_api_key");

var listId = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a";
var payload = new
{
    contact_ids = new[]
    {
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6d"
    }
};

var json = System.Text.Json.JsonSerializer.Serialize(payload);
var content = new StringContent(json, System.Text.Encoding.UTF8, "application/json");
var response = await client.PostAsync($"https://api.arsel.sa/v1/lists/{listId}/contacts", content);
Console.WriteLine(await response.Content.ReadAsStringAsync());

PHP

<?php
$listId = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a";
$ch = curl_init("https://api.arsel.sa/v1/lists/{$listId}/contacts");
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Content-Type: application/json",
    "Authorization: Bearer be_your_api_key"
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    "contact_ids" => [
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6d"
    ]
]));
$response = curl_exec($ch);
echo $response;
curl_close($ch);

---

Remove Contacts from List

Remove one or more contacts from a list. The contacts themselves are not deleted — only the list association is removed.

Endpoint

DELETE /lists/:id/contacts

Returns: 200 OK

Body Parameters

Parameter	Type	Required	Description
contact_ids	string[]	Yes	Array of contact IDs to remove. Min: 1.

Response

{
  "message": "Contacts removed from list",
  "processed": 2,
  "skipped": 0
}

Examples

cURL

curl -X DELETE "https://api.arsel.sa/v1/lists/01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a/contacts" \
  -H "Authorization: Bearer be_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "contact_ids": [
      "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
      "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c"
    ]
  }'

JavaScript

const listId = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a";

const response = await fetch(
  `https://api.arsel.sa/v1/lists/${listId}/contacts`,
  {
    method: "DELETE",
    headers: {
      "Content-Type": "application/json",
      Authorization: "Bearer be_your_api_key",
    },
    body: JSON.stringify({
      contact_ids: [
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c",
      ],
    }),
  }
);

const result = await response.json();
console.log(`Removed: ${result.processed}`);

Python

import requests

list_id = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a"

response = requests.delete(
    f"https://api.arsel.sa/v1/lists/{list_id}/contacts",
    headers={
        "Content-Type": "application/json",
        "Authorization": "Bearer be_your_api_key",
    },
    json={
        "contact_ids": [
            "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
            "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c",
        ],
    },
)

result = response.json()
print(f"Removed: {result['processed']}")

C#

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("Authorization", "Bearer be_your_api_key");

var listId = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a";
var payload = new
{
    contact_ids = new[]
    {
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c"
    }
};

var json = System.Text.Json.JsonSerializer.Serialize(payload);
var request = new HttpRequestMessage(HttpMethod.Delete, $"https://api.arsel.sa/v1/lists/{listId}/contacts")
{
    Content = new StringContent(json, System.Text.Encoding.UTF8, "application/json")
};
var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

PHP

<?php
$listId = "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6a";
$ch = curl_init("https://api.arsel.sa/v1/lists/{$listId}/contacts");
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Content-Type: application/json",
    "Authorization: Bearer be_your_api_key"
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    "contact_ids" => [
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6b",
        "01957e3a-4b5c-7d8e-9f0a-1b2c3d4e5f6c"
    ]
]));
$response = curl_exec($ch);
echo $response;
curl_close($ch);