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GET
/
topics
/
{id}
Get a single topic
curl --request GET \
  --url 'https://api.openalex.org/topics/{id}?api_key='
{
  "id": "https://openalex.org/T12419",
  "display_name": "<string>",
  "description": "<string>",
  "keywords": [
    "<string>"
  ],
  "subfield": {
    "id": "<string>",
    "display_name": "<string>"
  },
  "field": {
    "id": "<string>",
    "display_name": "<string>"
  },
  "domain": {
    "id": "<string>",
    "display_name": "<string>"
  },
  "works_count": 123,
  "cited_by_count": 123,
  "ids": {
    "openalex": "<string>",
    "wikipedia": "<string>"
  },
  "works_api_url": "<string>",
  "created_date": "2023-12-25",
  "updated_date": "2023-11-07T05:31:56Z"
}

Authorizations

​
api_key
string
query
required

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

Path Parameters

​
id
string
required

OpenAlex ID (e.g., T12419)

Query Parameters

​
select
string

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

​
api_key
string
required

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

Response

Successful response

A research topic automatically assigned to works

​
id
string

The OpenAlex ID for this topic.

Example:

"https://openalex.org/T12419"

​
display_name
string

The English-language label of the topic.

​
description
string

A description of this topic, generated by AI.

​
keywords
string[]

Keywords representing the content of papers in the topic.

​
subfield
object

The subfield (third level) containing this topic:

​
field
object

The field (second level) containing this topic:

​
domain
object

The domain (highest level) containing this topic:

​
works_count
integer

The number of works tagged with this topic.

​
cited_by_count
integer
​
ids
object

External identifiers:

​
works_api_url
string
​
created_date
string<date>
​
updated_date
string<date-time>

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