OPopenalex
Concepts

Get a single concept (deprecated)

DEPRECATED: Use Topics instead. Retrieve a single concept by OpenAlex ID.

get/concepts/{id}

Request

  • Base URL
    https://api.openalex.org
  • URL
    https://api.openalex.org/concepts/{id}
  • Auth
    API key in query parameter api_key

Path parameters

idstring required

OpenAlex ID (e.g., C41008148 for Computer Science)

Query parameters

selectstring

Comma-separated list of fields to return. Reduces response size. Example: select=id,display_name,cited_by_count

api_keystring required

Your OpenAlex API key (required). Get a free key at https://openalex.org/settings/api

Response

Successful response

idstring

The OpenAlex ID for this concept.

display_namestring

The name of the concept.

descriptionstring

A description of this concept.

levelinteger

The hierarchical level (0 = top level, higher = more specific).

wikidatastring

The Wikidata ID for this concept.

image_urlstring nullable

URL for an image representing this concept.

image_thumbnail_urlstring nullable

Smaller version of image_url.

works_countinteger

The number of works tagged with this concept.

cited_by_countinteger

Total citations to works tagged with this concept.

works_api_urlstring

A URL that returns all works tagged with this concept.

created_datestring date

When this concept was added to OpenAlex (ISO 8601 date).

updated_datestring date-time

When this concept was last updated (ISO 8601 datetime).

Example response

{
  "id": "https://openalex.org/C41008148"
}

Changes

No recorded changes to this operation across all 6 revisions of this API.