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API · /fourchan-api

4chan API

healthy 4,791 Subscribers

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.

#4chan #imageboard #forum #social #social-listening #trends #memes
api.oanor.com/fourchan-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
202 ms
Server probes · 24h
Subscribers
4,791
active
Total calls
25
last 7 days
status Full status page → · 10 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 1,500 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,500 calls/month
  • 3 req/sec
  • Boards + catalogs + hot threads
  • No credit card
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Starter

€7.00 /month

  • 30,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 30,000 calls/month
  • 8 req/sec
  • Full threads + sorted catalogs
  • Email support
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Pro

€19.00 /month

  • 180,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 180,000 calls/month
  • 20 req/sec
  • Social-listening & trend pipelines
  • Priority support
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Mega

€45.00 /month

  • 1,000,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,000,000 calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
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Live post, tag and ranking data from Danbooru, the large community anime-art imageboard, via its public API. Danbooru is built around a deep tag taxonomy — every image is tagged by artist, character, copyright (the source series) and general descriptors. Search images by tag and get each post's score, favourite count, rating, dimensions and its split tag sets. Read a single post in full. Search the tag database itself, returning each tag's post count and category — the metadata that powers booru search. Get the most-favourited posts of a given day, the site's trending art. Live, no key, nothing stored; to keep results work-safe, only general- and sensitive-rated posts are returned. Distinct from 4chan and other imageboard APIs — this is Danbooru's tagged-art database and its rankings. Perfect for art-discovery, tagging and community apps.

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Wikipedia Trends API

Live readership-trend data from the Wikimedia Pageviews API — the official measure of what the world is reading on Wikipedia and its sister projects. See the most-viewed articles on any Wikipedia language edition for a given day (the daily trending list); pull the daily or monthly pageview trend for any single article over a date range; read a whole project's total pageviews over a range as a barometer of overall traffic; or rank several articles head-to-head by total views for topic-engagement comparison. Special / namespace pages (Main Page, Search, Portal…) are filtered out by default so the trending list is real articles. Read live from Wikimedia, nothing stored — data lags about 1-2 days, so ranges default to ending two days back. This is the Wikipedia readership-trend and topic-engagement layer for any trends, research, newsroom or analytics app — distinct from Wikipedia content APIs: this is the pageview, trending and engagement signal of what people are actually reading and how it changes.

api.oanor.com/wikitrends-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for 4chan API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call 4chan API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for 4chan 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 4chan API cost?
4chan API has a free tier with 100 calls / month. Paid plans start at €7.00 / 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 4chan API GDPR-compliant?
All requests to 4chan 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/fourchan-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/fourchan-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/fourchan-api/SOME_PATH");
curl_setopt($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/fourchan-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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