API · /answer-api

Instant Answer API

healthy 4,629 Subscribers

Get instant knowledge answers — definitions, abstracts, entity facts and related topics — plus search autocomplete suggestions, powered by DuckDuckGo. Ideal for knowledge panels, "did you mean" boxes and query suggestions.

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

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

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

Instant Answer API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
213 ms
Server probes · 24h
Subscribers
4,629
active
Total calls
38
last 7 days
status Full status page → · 6 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 1,500 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,500 answers/autocomplete calls per month
  • 2 requests/sec
  • No credit card
  • Definitions + autocomplete endpoints
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Basic

€11.00 /month

  • 60,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 60,000 calls per month
  • 8 requests/sec
  • Instant answers, abstracts + related topics
  • Commercial use allowed
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Pro

€27.00 /month

  • 275,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 275,000 calls per month
  • 20 requests/sec
  • All endpoints incl. entity facts + autocomplete
  • Email support
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Mega

€69.00 /month

  • 1,200,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,200,000 calls per month
  • 50 requests/sec
  • 99.9% uptime SLA
  • Priority support + higher burst limits
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Built by

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The live Baidu trending boards (百度热搜), read keyless from Baidu's public "top" board endpoint. Baidu is China's dominant search engine, and its hot-search board is the country's most-watched read on what people are searching for right now — the Chinese equivalent of Google Trends' real-time list, the pulse of the Chinese internet. The realtime endpoint returns the main national hot-search board ranked by heat: each entry with its rank, the trending word, Baidu's heat score (its own searches-driven ranking metric), whether it is rising, falling or steady, an editorial tag and a one-line description. The category endpoint returns one of Baidu's themed boards — film, TV drama, novels, games, cars or finance — the same way. This is the Baidu trending cut — distinct from the Western trends feeds (Google, Wikipedia, Reddit) and from the platform feeds in the catalogue: it is what China is searching for. Heat scores are Baidu's own ranking metric, not a raw search count; words and descriptions are in Chinese as Baidu publishes them. Counts are the real, live numbers Baidu shows; a short cache fronts the upstream. Keyless.

api.oanor.com/baiduhot-api

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Real-time Reddit data as an API — subreddits, posts, comments, user profiles and search, returned as clean JSON. Pull a subreddit's info and its hot, new, top or rising posts; fetch a post together with its full comment tree; look up any user's profile, karma, submissions and comments; search posts across all of Reddit or within one subreddit; and list the trending posts and the most popular subreddits. Live data, paginated with Reddit cursors, with scores, upvote ratios, comment counts, flair, timestamps, thumbnails and media URLs. Ideal for social listening and brand monitoring, trend and sentiment dashboards, content aggregation, research and market intelligence, and bots. 11 data endpoints. Authenticated with an x-oanor-key; fair-use rate limits per plan.

api.oanor.com/reddit-api

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Highlight search terms in text. The highlight endpoint wraps every match of one or more terms in a marker — defaulting to <mark>…</mark>, or any open/close strings you choose (** for Markdown, ANSI codes for the terminal, a CSS span, anything) — and returns the marked-up text and a match count. The snippets endpoint returns short excerpts of the surrounding context around each match, the way a search-results page shows where your query appears. Matching is case-insensitive by default with optional whole-word mode, and terms are matched literally (regex characters are safely escaped). Perfect for search results and in-page find, keyword spotting, log review and document previews. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from search, summarization and diff APIs.

api.oanor.com/highlight-api

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Stemmer API

Reduce words to their linguistic root (stem) with the classic Snowball stemming algorithms — running → run, fishing → fish, nationalization → nation — across 24 languages including English, German, French, Spanish, Italian, Portuguese, Dutch, Russian, Arabic, Finnish, Swedish and more. Stem a whole text (every word, returning both the per-word mapping and the fully stemmed text) or a single word. Stemming is the core normalisation step behind search engines, query expansion, text indexing, keyword matching and NLP preprocessing. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from sentiment/NLP analysis and fuzzy string matching.

api.oanor.com/stemmer-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Instant Answer API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Instant Answer API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Instant Answer 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 Instant Answer API cost?
Instant Answer API has a free tier with 100 calls / month. Paid plans start at €11.00 / 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 Instant Answer API GDPR-compliant?
All requests to Instant Answer 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/answer-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/answer-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/answer-api/SOME_PATH");
curl_setopt($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/answer-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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