---
title: Categories
slug: neurons-api/categories
createdAt: 2026-08-19T08:34:10.378Z
---

An endpoint to retrieve the list of external applications available in the catalog.

### HTTP Method

GET

Returns a paged list of catalog records.

Returns the package revisions in the application's user interface.

- [GET /api/SwdPackage/catalog/external](docId\:lzKLyHdb77WisrBsFZEZb)

### Request URI

**GET /api/SwdPackage/catalog/external**

The category revisions are returned to be displayed on the left side of an app's Category tab in the UI.

### Header Parameters

| Name          | Type   | Description                                                                                                                                                                                                                                                   |
| ------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Authorization | String | Use the `Bearer <access-token>` value determined during the [../Shared-Content/authenticate\_api.htm](docId\:g63kPQj5_TALr1zpNkeeN)[app-distribution-authentication.htm](docId\:fd5_JmdAucKSdgC_uJ35I)[Authentication](docId\:g63kPQj5_TALr1zpNkeeN) process. |

### Request Body Parameters

| Name        | Type   | Description                     |
| ----------- | ------ | ------------------------------- |
| api-version | String | The current API version number. |