---
title: "GET /system_class_count/"
method: GET
path: "/system_class_count/"
tags: ["Administrative Endpoints"]
---

# GET /system_class_count/

`GET /system_class_count/`

Retrieves system classes with a count of their instances.

## Query parameters

- `type_id` integer[]

## Response `200`

Success

- SystemClassCountModel
  - `move` integer, required
  - `bibliography` integer, required
  - `person` integer, required
  - `acquisition` integer, required
  - `reference_system` integer, required
  - `feature` integer, required
  - `file` integer, required
  - `activity` integer, required
  - `type` integer, required
  - `administrative_unit` integer, required
  - `artifact` integer, required
  - `source_translation` integer, required
  - `place` integer, required
  - `stratigraphic_unit` integer, required
  - `edition` integer, required
  - `group` integer, required
  - `source` integer, required

## Other responses

- `404` — Something went wrong. Please consult the error message.

## Changes

- **2025-04-01** `b640f0339736` — 2 breaking, 6 info
  - removed the media type `application/json` for the response with the status `404`
  - removed the required property `text` from the response with the `200` status
  - removed the non-success response with the status `400`
  - removed the non-success response with the status `401`
  - …4 more

[Change history](https://skmtc.dev/craws/apis/openatlas-api/changes/system_class_count/get.md)

---

[API](https://skmtc.dev/craws/apis/openatlas-api.md) · [All operations](https://skmtc.dev/craws/apis/openatlas-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/craws/openatlas-api/revisions/f2e51ff080a6/schema)