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# List item collections

GET https://api.twelvelabs.io/v1.3/knowledge-stores/{knowledge_store_id}/item-collections

Returns a list of the item collections in the specified knowledge store.


Reference: https://docs.twelvelabs.io/api-reference/knowledge-store-items/item-collections/list

## Authentication

- `x-api-key` header (required) — Your API key. You can find your API key on the API Keys page.

## Request

### Path parameters

- `knowledge_store_id` (string, required) — The unique identifier of the knowledge store.

### Query parameters

- `page` (integer, optional, default: 1) — A number that identifies the page to retrieve. **Default**: `1`.
- `page_limit` (integer, optional, default: 10) — The number of items to return on each page. **Default**: `10`. **Max**: `50`.
- `sort_by` (enum, optional, default: created_at) — The field to sort on. The following options are available: - `created_at`: Sorts by the time, in the RFC 3339 format ("YYYY-MM-DDTHH:mm:ssZ"), when the item collection was created. - `updated_at`: Sorts by the time, in the RFC 3339 format ("YYYY-MM-DDTHH:mm:ssZ"), when the item collection was last updated. - `name`: Sorts alphabetically by the name of the item collection. **Default**: `created_at`.
  - Allowed values: `created_at`, `updated_at`, `name`
- `sort_option` (string, optional, default: desc) — The sorting direction. The following options are available: - `asc` - `desc` **Default**: `desc`.

## Response

### 200

The item collections have been successfully retrieved.

- `data` (list of KnowledgeStoreItemCollection, optional) — An array containing the item collections.
- `page_info` (page_info, optional) — An object that provides information about pagination.

## Errors

### 400 Bad Request Error

The request has failed.

- `code` (string, optional) — A string representing the code associated with the error. See the [Error codes](/v1.3/api-reference/error-codes) page for details.
- `message` (string, optional) — A human-readable string describing the error, intended to be suitable for display in a user interface.

## Types

### KnowledgeStoreItemCollection

A named collection of items within a knowledge store. Use item collections to organize and reference subsets of items together. The items themselves are not affected.

- `_id` (string, optional) — The unique identifier of the item collection.
- `knowledge_store_id` (string, optional) — The unique identifier of the knowledge store this collection belongs to.
- `name` (string, optional) — The name of the item collection.
- `description` (string, optional) — The description of the item collection.
- `metadata` (map from string to KnowledgeStoreMetadataValue, optional) — Custom metadata for the item collection. Keys are strings; each value is a string, a number, a boolean, or an array of strings.
- `member_count` (integer, optional) — The number of items in the collection.
- `created_at` (string, optional) — The date and time when the item collection was created, in the RFC 3339 format.
- `updated_at` (string, optional) — The date and time when the item collection was last updated, in the RFC 3339 format.

### page_info

An object that provides information about pagination.

- `limit_per_page` (integer, optional) — The maximum number of items on each page.
- `page` (integer, optional) — The page you retrieved.
- `total_page` (integer, optional) — The total number of pages.
- `total_results` (integer, optional) — The total number of results.

### KnowledgeStoreMetadataValue

A single custom-metadata value: a string, a number, a boolean, or an array of strings. The value keeps the JSON type sent; a nested object, an array containing anything other than strings, and a null value are rejected. An integer must fit in 53 bits (-9007199254740991 to 9007199254740991). A wider integer, or an identifier that must be preserved verbatim, must be sent as a string.

## Examples

**Response**

```json
{
  "data": [
    {
      "_id": "ksic_069e9870-3c4d-7abc-9012-3456789abcde",
      "knowledge_store_id": "ks_069e9869-1ea3-7481-8000-dae72bf6be6e",
      "name": "Q1 highlights",
      "description": "Highlight clips selected for the Q1 review",
      "metadata": {},
      "member_count": 12,
      "created_at": "2024-01-15T09:30:00Z",
      "updated_at": "2024-01-15T09:30:00Z"
    }
  ],
  "page_info": {
    "limit_per_page": 10,
    "page": 1,
    "total_page": 1,
    "total_results": 2
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections"

querystring = {"sort_by":"created_at"}

headers = {"x-api-key": "<apiKey>"}

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

print(response.json())
```

```javascript
const url = 'https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections?sort_by=created_at';
const options = {method: 'GET', headers: {'x-api-key': '<apiKey>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

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

func main() {

	url := "https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections?sort_by=created_at"

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

	req.Header.Add("x-api-key", "<apiKey>")

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

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

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections?sort_by=created_at")

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

request = Net::HTTP::Get.new(url)
request["x-api-key"] = '<apiKey>'

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

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections?sort_by=created_at")
  .header("x-api-key", "<apiKey>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections?sort_by=created_at', [
  'headers' => [
    'x-api-key' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections?sort_by=created_at");
var request = new RestRequest(Method.GET);
request.AddHeader("x-api-key", "<apiKey>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["x-api-key": "<apiKey>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.twelvelabs.io/v1.3/knowledge-stores/ks_069e9869-1ea3-7481-8000-dae72bf6be6e/item-collections?sort_by=created_at")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```