PaidWord Intelligence API

Batch words

POST/words/batchMember key

Up to 100 word profiles in one call.

One entry per key, in the request's order: the profile of GET /words/{word}, or { word, found: false } for a key the catalog does not answer (unknown, disabled, or never shown). Billed one request per key sent, misses included.

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

BillingOne call.

PlanInvestor plan. A Founder key answers 403 plan_required.

FormatsJSON

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

Connect on RapidAPI

Request

fieldsstringOptionalQuery

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

wordsstring[]RequiredBody

1 to 100 keys, each a spelling, a slug or wrd_<id>.

curl -X POST "https://api.unique.domains/v1/words/batch" \
  -H "Authorization: Bearer YOUR_MEMBER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "words": [
      "harbor",
      "wrd_48214"
    ]
  }'

const response = await fetch("https://api.unique.domains/v1/words/batch", {
    method: "POST",
    headers: {
        "Authorization": "Bearer YOUR_MEMBER_KEY",
        "Content-Type": "application/json",
    },
    body: JSON.stringify({
        "words": [
            "harbor",
            "wrd_48214"
        ]
    }),
});

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

import requests

response = requests.post(
    "https://api.unique.domains/v1/words/batch",
    headers={
        "Authorization": "Bearer YOUR_MEMBER_KEY",
        "Content-Type": "application/json",
    },
    json={
        "words": [
            "harbor",
            "wrd_48214"
        ]
    },
)

print(response.json())

req, err := http.NewRequest("POST", "https://api.unique.domains/v1/words/batch", strings.NewReader(`{"words":["harbor","wrd_48214"]}`))
if err != nil {
    panic(err)
}
req.Header.Set("Authorization", "Bearer YOUR_MEMBER_KEY")
req.Header.Set("Content-Type", "application/json")

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

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => "https://api.unique.domains/v1/words/batch",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_POSTFIELDS => json_encode([
        "words" => ["harbor", "wrd_48214"],
    ]),
    CURLOPT_HTTPHEADER => [
        "Authorization: Bearer YOUR_MEMBER_KEY",
        "Content-Type: application/json",
    ],
]);
$response = curl_exec($ch);

uri = URI("https://api.unique.domains/v1/words/batch")
request = Net::HTTP::Post.new(uri)
request["Authorization"] = "Bearer YOUR_MEMBER_KEY"
request["Content-Type"] = "application/json"
request.body = JSON.dump({
  "words": [
    "harbor",
    "wrd_48214"
  ]
})

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

validation_failed400

A value is not valid

rate_limited429

Too many requests

internal500

Unexpected error

200 · application/jsonExample

{
  "data": [
    {
      "id": "wrd_48213",
      "word": "harbor",
      "slug": "harbor",
      "shape": "single",
      "origin": "dictionary",
      "popularity": 71
    },
    {
      "word": "harborr",
      "found": false
    }
  ],
  "meta": {
    "asOf": "2026-11-05T08:00:00Z",
    "cursor": null,
    "limit": null
  },
  "links": {
    "self": "https://api.unique.domains/v1/words/batch",
    "next": null,
    "register": null,
    "product": null,
    "dataset": null
  }
}

Batch words

Request

Response

Errors

Related endpoints