---
title: "List extension categories"
method: GET
path: "/api/v1/extensions/categories"
tags: ["Extensions"]
---

# List extension categories

`GET /api/v1/extensions/categories`

## Request

- Base URL: `http://:8080`
- URL: `http://:8080/api/v1/extensions/categories`
- Auth: none declared

List extension categories.

Auth: Required (bearer token).
Scope: Organization-scoped in authenticated context.
Side effects: Read-only operation.

## Headers

- `Accept` string

## Response `200`

OK

- CategoriesResponse: CategoriesResponse schema
  - `data` string[]
  - `message` string
  - `status` string

## Other responses

- `400`: Bad Request _(validation or deserialization error)_
- `500`: Internal Server Error _(panics)_
- `default`

## Changes

- **2026-04-26** `09f18af670c4`: 3 info
  - api tag `Extensions` added
  - api tag `api/v1/extensions` removed
  - api tag `categories` removed
- **2026-04-02** `2beb810c5221`: 24 warning, 13 info
  - removed the optional property `detail` from the response with the `400` status (media type: application/json)
  - removed the optional property `detail` from the response with the `400` status (media type: application/xml)
  - removed the optional property `detail` from the response with the `500` status (media type: application/json)
  - removed the optional property `detail` from the response with the `500` status (media type: application/xml)
  - …33 more
- **2026-03-26** `e34b00e45318`: 8 breaking, 4 warning, 25 info
  - removed the required property `code` from the response with the `400` status (media type: application/json)
  - removed the required property `code` from the response with the `400` status (media type: application/xml)
  - removed the required property `code` from the response with the `500` status (media type: application/json)
  - removed the required property `code` from the response with the `500` status (media type: application/xml)
  - …33 more
- …earlier changes not shown

[Operation history](https://skmtc.dev/nixopus/apis/nixopus-api/changes/api/v1/extensions/categories/get.md)

---

[API](https://skmtc.dev/nixopus/apis/nixopus-api.md) - [All operations](https://skmtc.dev/nixopus/apis/nixopus-api/llms.txt) - [OpenAPI document](https://skmtc.dev/nixopus/apis/nixopus-api/revisions/c5bacaea7239?raw)