# GET - List

The App Data API enables you to create, update, delete and list data you associated to your application. **App Data** lets you create **tables** of key/value pairs. It is for **application** centric data as opposed to **user** centric data. You can use the data in your targeting queries and/or in a message template.

### Request structure

#### Route

The App Data API exposes a GET endpoint that lets you list App Data **tables**:

`https://api.batch.com/1.0/BATCH_API_KEY/app-data`

Here is a valid cURL example:

```bash
curl -H "Content-Type: application/json" -H "X-Authorization: BATCH_REST_API_KEY" -X GET "https://api.batch.com/1.0/BATCH_API_KEY/app-data"
```

The `BATCH_API_KEY` value is either your **Live**, **Dev** or **SDK** Batch API key from the settings page of your app within the dashboard (⚙ Settings → General).

#### Headers

In order to authenticate with the API, you need to provide your **company REST API Key** as the value of the `X-Authorization` header. You can find it in ⚙ Settings → General.

#### Get parameters

<table><thead><tr><th width="117.5">Id</th><th width="593.5">Description</th></tr></thead><tbody><tr><td><code>from</code></td><td><strong>Integer</strong> - <em>Optional, Default : 0</em><br>Value used for pagination : it indicates the offset of the first table to be returned. Tables are sorted by creation date (from the most recent to the oldest).<br><em>E.g.</em><code>"/app-data?from=10"</code></td></tr><tr><td><code>limit</code></td><td><strong>Integer</strong> - <em>Optional, Default : 10, Max : 100</em><br>Value that indicates the maximum number of tables to be returned per API call.<br><em>E.g.</em><code>"/app-data?limit=20"</code></td></tr></tbody></table>

Here is an example of a valid cURL command which would return 5 tables, starting from the 10th table (sorted by creation date in descending order):

```bash
curl -H "Content-Type: application/json" -H "X-Authorization: BATCH_REST_API_KEY" -X GET
"https://api.batch.com/1.0/BATCH_API_KEY/app-data?from=10&limit=5"
```

### Responses

#### Success

If the GET to the API endpoint is successful you will receive an **HTTP 200** confirmation and information about your audiences.

```json
{
  "app_data": [
    {
      "name": "your_table_name",
      "description": "The table description",
      "nb_rows": 135, // the number of keys
      "size": 40500, // the size in bytes
      "created": "2018-06-29T14:59:03",
      "updated": "2018-12-29T15:07:32"
    },
    {
      "name": "another_table",
      "description": "The table description",
      "nb_rows": 268,
      "size": 80800, // the size in bytes
      "created": "2018-06-29T13:12:09",
      "updated": "2018-06-29T13:42:59"
    }
  ]
}
```

#### Failure

If the POST data does not meet the API requirements you will receive an actionable error message. Contact us at <support@batch.com> if you need further support.

* `AUTHENTICATION_INVALID` (Http status code: 401, Error code: 10)
* `API_MISUSE` (Http status code: 403, Error code: 12)
* `ROUTE_NOT_FOUND` (Http status code: 404, Error code: 20)
* `MISSING_PARAMETER` (Http status code: 400, Error code: 30)
* `MALFORMED_PARAMETER` (Http status code: 400, Error code: 31)
* `MALFORMED_JSON_BODY` (Http status code: 400, Error code: 32)
* `SERVER_ERROR` (Http status code: 500, Error code: 1)
* `MAINTENANCE_ERROR` (Http status code: 503, Error code: 2)