PaidWord Intelligence API

Get word

GET/words/{word}Member key

A word's profile: definition, facets, categories, origin and linguistics.

Reads the catalog Word row and its categories. A word unknown, disabled, offensive or not a word answers 404 with up to five candidates.

AccessA member key (Founder or Investor) or a paid RapidAPI subscription to this API.

BillingOne call.

FormatsJSON

Keep a key on a server: a page a visitor loads shows it to everyone.

Connect on RapidAPI

Request

wordstringRequiredPath

The catalog slug, the word, or wrd_<id>.

fieldsstringOptionalQuery

Comma-separated top-level keys to keep; an unknown key answers 400 unsupported_field.

curl -X GET "https://api.unique.domains/v1/words/harbor" \
  -H "Authorization: Bearer YOUR_MEMBER_KEY"

const response = await fetch("https://api.unique.domains/v1/words/harbor", {
    method: "GET",
    headers: {
        "Authorization": "Bearer YOUR_MEMBER_KEY",
    },
});

const data = await response.json();
console.log(data);

import requests

response = requests.get(
    "https://api.unique.domains/v1/words/harbor",
    headers={
        "Authorization": "Bearer YOUR_MEMBER_KEY",
    },
)

print(response.json())

req, err := http.NewRequest("GET", "https://api.unique.domains/v1/words/harbor", nil)
if err != nil {
    panic(err)
}
req.Header.Set("Authorization", "Bearer YOUR_MEMBER_KEY")

res, err := http.DefaultClient.Do(req)

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => "https://api.unique.domains/v1/words/harbor",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => "GET",
    CURLOPT_HTTPHEADER => [
        "Authorization: Bearer YOUR_MEMBER_KEY",
    ],
]);
$response = curl_exec($ch);

uri = URI("https://api.unique.domains/v1/words/harbor")
request = Net::HTTP::Get.new(uri)
request["Authorization"] = "Bearer YOUR_MEMBER_KEY"

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }

Response

idstring

wrd_<id>.

wordstring

slugstring | null

shapestring | null

posstring | null

Parts of speech as stored, comma-joined tags.

definitionstring | null

inflectedboolean | null

sizeinteger | null

popularityinteger | null

How widely the word is used; never sales or demand.

sentimentinteger | null

50 is neutral.

brandabilityinteger | null

stylestring | null

categoriesobject[]

denyClassstring | null

Why the word stays off public lists; null when none.

originstring

addedAtstring | null

When the intake added it; null means the dictionary load.

linguisticsobject

Errors

not_found404

Not found

rate_limited429

Too many requests

internal500

Unexpected error

200 · application/jsonExample

{
  "data": {
    "id": "wrd_48213",
    "word": "harbor",
    "slug": "harbor",
    "shape": "single",
    "pos": "noun,verb",
    "definition": "A sheltered stretch of water where ships can moor.",
    "inflected": false,
    "size": 6,
    "popularity": 71,
    "sentiment": 58,
    "brandability": 74,
    "style": "elegant",
    "categories": [
      {
        "slug": "travel",
        "name": "Travel"
      }
    ],
    "denyClass": null,
    "origin": "dictionary",
    "addedAt": null,
    "linguistics": {
      "pronunciationIpa": "ˈhɑɹbɚ",
      "pronunciationArpabet": "HH AA1 R B ER0",
      "pronunciationSyllables": 2,
      "pronunciationStressPattern": "10",
      "pronunciationConfidence": "high",
      "pronounceabilityLabel": "easy",
      "pronounceabilityScore": 88,
      "pronounceabilityPhonotactic": 81,
      "memorabilityLabel": "high",
      "memorabilityScore": 77,
      "memorabilityFamiliarity": 72,
      "memorabilityNeighbors": 9,
      "spellingLabel": "low",
      "spellingRisk": 22,
      "spellingHomophones": 0,
      "spellingSoundalikes": 2,
      "spellingLikelyMisspellings": [
        "harbour",
        "harber"
      ],
      "soundTextureLabel": "soft",
      "soundTextureSoftness": 64,
      "soundTextureSharpness": 36,
      "lookalikeIsLookalike": false,
      "lookalikeNormalized": "harbor"
    }
  },
  "meta": {
    "asOf": "2026-11-05T08:00:00Z",
    "cursor": null,
    "limit": null
  },
  "links": {
    "self": "https://api.unique.domains/v1/words/harbor",
    "next": null,
    "register": null,
    "product": null,
    "dataset": null
  }
}

Get word

Request

Response

Errors

Related endpoints