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API · /kanji-api

Kanji API

degraded 4,470 Subscribers

The Japanese kanji writing system as an API — every Jōyō, Kyōiku and Jinmeiyō kanji with its on/kun readings, English meanings, JLPT level, school grade, stroke count and newspaper frequency. Look up a single kanji (e.g. 字 → grade 1, JLPT 4, readings ジ / あざ, meanings "character, letter"), find every kanji that shares a kana reading (e.g. かじ), list the vocabulary that uses a given kanji, or pull a whole standard set (Jōyō 2,136 · Kyōiku · grade-1…grade-6 · Jinmeiyō) with paging. Backed by the open KANJIDIC2 / JMdict datasets via kanjiapi.dev. Ideal for Japanese-learning and flashcard apps, SRS/Anki-style study tools, furigana and reading aids, language-education platforms and linguistics research.

#kanji #japanese #language #dictionary #jlpt #kanjidic #education
api.oanor.com/kanji-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

degraded
Uptime
80.00%
Server probes · 24h
Avg latency
141 ms
Server probes · 24h
Subscribers
4,470
active
Total calls
25
last 7 days
status Full status page → · 25 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,800 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,800 calls/month
  • 2 req/sec
  • Kanji + reading + words lookup
  • No credit card
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Starter

€4.90 /month

  • 44,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 44k calls/month
  • 8 req/sec
  • Standard sets (Jōyō / grade)
  • Email support
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Pro

€15.90 /month

  • 220,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 220k calls/month
  • 20 req/sec
  • Flashcard / SRS apps
  • Priority support
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Mega

€39.90 /month

  • 1,100,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.1M calls/month
  • 50 req/sec
  • Education / dictionary platform
  • Dedicated SLA
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api.oanor.com/classical-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Kanji API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Kanji API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Kanji 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 Kanji API cost?
Kanji API has a free tier with 100 calls / month. Paid plans start at €4.90 / 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 Kanji API GDPR-compliant?
All requests to Kanji 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/kanji-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/kanji-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/kanji-api/SOME_PATH");
curl_setopt($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/kanji-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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