Deprecated endpoint. The /text/topics endpoint is deprecated. Use the /text/keywords endpoint instead.
/text endpoint lets you tag free text with OpenAlex’s “aboutness” assignments: topics, keywords, and concepts.
Send a title and optional abstract via GET or POST:
GET https://api.openalex.org/text/keywords?title=type%201%20diabetes%20research%20for%20children
Available endpoints
| Endpoint | Returns |
|---|
/text/keywords | Keywords for your text |
/text/concepts | Concepts for your text |
/text | All of the above in one request |
Example response
GET https://api.openalex.org/text?title=type%201%20diabetes%20research%20for%20children
{
"meta": {
"keywords_count": 5,
"concepts_count": 3
},
"keywords": [
{
"id": "https://openalex.org/keywords/type-1-diabetes",
"display_name": "Type 1 Diabetes",
"score": 0.677
}
],
"concepts": [
{
"id": "https://openalex.org/C71924100",
"display_name": "Medicine",
"score": 0.85
}
]
}
Limits
| Constraint | Value |
|---|
| Text length | 20-2000 characters |
| Rate limit | 1 request per second |
| Cost | $0.01 per request |
