---
title: "GET /class_mapping/"
method: GET
path: "/class_mapping/"
tags: ["Proposal"]
---

# GET /class_mapping/

`GET /class_mapping/`

Retrieves all OpenAtlas classes with their label, CIDOC CRM mapping, view, icon and standard type ID. Label language is English by default but can be changed by `locale` parameter

## Query parameters

- `locale` 'ca' | 'de' | 'en' | 'es' | 'fr'
- `download` boolean

## Response `200`

Success

- ClassMappingModel
  - `locale` string
  - `results` object[]
    - `label` string, required
    - `systemClass` string, required
    - `crmClass` string, required
    - `view` string, nullable, required
    - `icon` string, nullable, required

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Access denied
- `404` — Resource not found
- `409` — Conflict
- `500` — Internal server error

## Changes

- **2025-12-03** `008688998b83` — 8 breaking
  - the response property `results/items/icon` became nullable for the status `200`
  - the response property `results/items/view` became nullable for the status `200`
  - the `allOf[#/components/schemas/ApiError]/url` response's property type/format changed from `string`/`uri` to `string`/`` for status `401`
  - the `allOf[#/components/schemas/ApiError]/url` response's property type/format changed from `string`/`uri` to `string`/`` for status `403`
  - …4 more
- **2025-12-02** `26f86ddcd57c` — 9 info
  - added `#/components/schemas/ApiError, subschema #2` to the response body `allOf` list for the response status `404`
  - added `#/components/schemas/ApiError, #/components/schemas/ParameterError, subschema #3` to the response body `anyOf` list for the response status `400`
  - removed `#/components/schemas/ErrorModel, #/components/schemas/ParameterErrorModel` from the response body `oneOf` list for the response status `400`
  - removed `#/components/schemas/ErrorModel, #/components/schemas/ParameterErrorModel` from the response body `oneOf` list for the response status `404`
  - …5 more
- **2025-12-02** `676032e96b3f` — 3 info
  - added the media type `application/json` for the response with the status `404`
  - added the non-success response with the status `400`
  - added the non-success response with the status `405`
- …earlier changes not shown

[Full history](https://skmtc.dev/craws/apis/openatlas-api/changes/class_mapping/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/bbd340468fc9/schema)