# List word categories

`GET https://api.unique.domains/v1/words/categories`

The catalog's word categories, by name.

The `category` filter values of `GET /words`. The catch-all `general` category is left out, as on the profile. The whole list, no cursor.

- Access: No key. Limited per address; a key adds the paid fields.
- Billing: One call.
- Formats: JSON
- API: Word Intelligence API

## Request

| Field | Type | Needs | Where | Description |
| --- | --- | --- | --- | --- |
| `fields` | string | Optional | Query | Comma-separated top-level keys to keep; an unknown key answers 400 `unsupported_field`. |

## Sample request

```bash
curl -X GET "https://api.unique.domains/v1/words/categories"
```

## Response

| Field | Type | Description |
| --- | --- | --- |
| `slug` | string |  |
| `name` | string \| null |  |

## Errors

| Code | Status | What it means |
| --- | --- | --- |
| [`rate_limited`](https://unique.domains/api/problems/rate_limited) | 429 | Too many requests |
| [`internal`](https://unique.domains/api/problems/internal) | 500 | Unexpected error |

## Example answer

200, application/json

```json
{
  "data": [
    {
      "slug": "travel",
      "name": "Travel"
    }
  ],
  "meta": {
    "asOf": "2026-11-05T08:00:00Z",
    "cursor": null,
    "limit": null
  },
  "links": {
    "self": "https://api.unique.domains/v1/words/categories",
    "next": null,
    "register": null,
    "product": null,
    "dataset": null
  }
}
```

API status: https://uniquedomains.instatus.com

Full reference: https://unique.domains/api