API · /urbandict-api

Urban Dictionary API

healthy 3,561 Subscribers

Urban Dictionary as an API — the crowd-sourced dictionary of slang, internet terms, memes, abbreviations and pop-culture expressions. Where a formal dictionary stops, Urban Dictionary explains the words people actually use online and in conversation: youth slang, gaming and meme vocabulary, acronyms, regional expressions and the ever-changing language of the internet. This API wraps the official Urban Dictionary service into a clean JSON interface. /v1/define?term=yeet returns the community definitions for a slang term, each with a real usage example, the contributing author, the up- and down-vote counts and a computed net score, sorted best-first so the most upvoted meaning comes first (or pass defid to fetch one specific definition by its id). /v1/random returns a batch of random definitions — perfect for a slang word-of-the-day, discovery features or fun. /v1/autocomplete?term=ye returns term suggestions as the user types, each with a short preview, for building search-as-you-type experiences. Ideal for chat and social apps decoding slang, language-learning and culture tools, moderation context, trivia and entertainment bots, and word-of-the-day widgets. Definitions are user-submitted and, by the nature of the source, may contain strong or NSFW language. Data from Urban Dictionary. For formal definitions, pronunciation and etymology, pair this with a standard dictionary API.

api.oanor.com/urbandict-api
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Machine-readable spec so AI agents can integrate this API.

/api/urbandict-api/openapi.json
/api/urbandict-api/llms.txt

Discovery: GET /api/index.json lists every API.

Urban Dictionary API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
247 ms
Server probes · 24h
Subscribers
3,561
active
Total calls
80
last 7 days
status Full status page → · 16 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 2000 calls/month
  • 2 req/sec
  • Define, random & autocomplete
  • No credit card
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Starter

€5.00 /month

  • 45,000 calls / month
  • 5 requests / second
  • Hard cap (429 above quota, no overage)
  • 45k calls/month
  • 5 req/sec
  • Vote-sorted definitions
  • Email support
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Pro

€18.00 /month

  • 200,000 calls / month
  • 12 requests / second
  • Hard cap (429 above quota, no overage)
  • 200k calls/month
  • 12 req/sec
  • Chat & moderation use
  • Priority support
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Mega

€49.00 /month

  • 750,000 calls / month
  • 35 requests / second
  • Hard cap (429 above quota, no overage)
  • 750k calls/month
  • 35 req/sec
  • High-volume apps
  • Dedicated SLA
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Built by

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Live read-only access to the 4chan imageboard, served straight from its official JSON API — one of the most influential anonymous forums on the internet and a primary source of internet culture, exposed as clean JSON with the HTML stripped to plain text. The boards endpoint lists every one of 4chan's ~77 boards with its code, title, worksafe flag, pages, threads-per-page and a description, from /g/ (Technology) and /v/ (Video Games) to /news/, /sci/ and /pol/. The catalog endpoint returns every live thread on a board summarized — the opening post's subject and a plain-text teaser of its comment, the reply and image counts, the sticky and closed flags and when it was last bumped — sorted by activity, replies or images: the front page of the board as data. The hot endpoint self-discovers and returns the single most active thread on a board right now, fully expanded with the original post and its top replies, so you never need a thread id that has expired. The thread endpoint returns one specific thread in full by its id — the original post and every reply with author name, timestamp, plain-text comment and image filename — and falls back to the current top thread when no id is given. Everything is the live board state, nothing stored. This is the imageboard layer for any social-listening, trend-tracking, meme-research, moderation or bot app. Live from 4chan's JSON API. Distinct from Reddit, Hacker News and Lemmy APIs — this is 4chan's boards, catalogs and threads. Some boards are NSFW (worksafe flag provided). 5 endpoints, no key on our side, nothing cached.

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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Urban Dictionary API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Urban Dictionary API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Urban Dictionary API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Urban Dictionary API cost?
Urban Dictionary API has a free tier with 100 calls / month. Paid plans start at €5.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Urban Dictionary API GDPR-compliant?
All requests to Urban Dictionary API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/urbandict-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/urbandict-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/urbandict-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/urbandict-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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