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API · /nervos-api

Nervos CKB On-Chain API

healthy 3,140 Subscribers

Live on-chain data from the Nervos Common Knowledge Base (CKB) via the official Nervos explorer — clean JSON, no cache. Nervos CKB is a proof-of-work Layer-1 built on the Cell model — a generalised UTXO where every cell can hold state and code — secured by the Eaglesong hash and governed in epochs, with a native state-rent / deposit system (NervosDAO) that pays interest for locking CKB. Read the chain state (tip block, current epoch, block time, difficulty and hashrate); browse the most recent blocks with miner and reward; fetch a single block by number or hash; look up an address's CKB balance, its NervosDAO deposit and compensation, live-cell count and UDT token accounts; or resolve a transaction's block, fee and type. Read live from Nervos, nothing stored. This is Nervos CKB's own Cell-model, NervosDAO and PoW layer — distinct from the Bitcoin, Decred, Ergo and other on-chain APIs and from price feeds.

#crypto #nervos #ckb #on-chain #cell-model #pow #blockchain
api.oanor.com/nervos-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
747 ms
Server probes · 24h
Subscribers
3,140
active
Total calls
0
last 7 days
status Full status page → · 11 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 900 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 900 calls/month
  • 3 req/sec
  • All endpoints
  • No credit card
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Starter

€11.00 /month

  • 33,000 calls / month
  • 12 requests / second
  • Hard cap (429 above quota, no overage)
  • 33k calls/month
  • 12 req/sec
  • Network + blocks
  • Email support
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Pro

€29.50 /month

  • 170,000 calls / month
  • 28 requests / second
  • Hard cap (429 above quota, no overage)
  • 170k calls/month
  • 28 req/sec
  • Address + tx lookups
  • Priority support
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Business

€69.00 /month

  • 850,000 calls / month
  • 55 requests / second
  • Hard cap (429 above quota, no overage)
  • 850k calls/month
  • 55 req/sec
  • Explorer-scale volume
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Upbit API

Live spot market data from Upbit, South Korea's largest crypto exchange and one of the highest-volume venues in the world — served straight from its public API, no key, nothing cached. Get a market's price, 24h change, high/low, 24h volume and value and 52-week range (in Korean won, Bitcoin or Tether); rank every market for a quote currency by 24h trade value; list Upbit's trading pairs with their Korean and English names; and pull daily, weekly or monthly OHLC candles. Upbit's KRW prices are the reference for the "kimchi premium" — a distinct Korean-market venue, separate from other exchange feeds.

api.oanor.com/upbit-api

HTX API

Live spot market data from HTX (formerly Huobi), one of the longest-running centralised crypto exchanges and a leading venue in Asian markets. The ticker endpoint returns a symbol's 24h last price, open, high, low, best bid/ask, base and quote volume, trade count and change. The tickers endpoint returns the top symbols by 24h quote volume. The symbols endpoint searches HTX's spot trading pairs. Read live from HTX, nothing stored. This is HTX's own spot ticker and market layer — a distinct centralised-exchange venue, separate from other exchange feeds and from DEX, lending and oracle APIs.

api.oanor.com/htx-api

KyberSwap API

Live DEX-aggregator swap quotes from KyberSwap, which routes a trade across every decentralised exchange and liquidity pool on a chain to find the best output. The quote endpoint prices a swap between two tokens on Ethereum, Arbitrum, Base, Optimism, Polygon or BNB Chain — it returns the amount received, the USD values in and out, the price impact, the estimated gas cost and the DEXs the route passes through. The tokens endpoint lists the supported tokens per chain. The chains endpoint lists supported chains. Read live from KyberSwap, nothing stored. This is KyberSwap's own multi-chain EVM swap-routing and best-price layer — distinct from single-DEX feeds and from Solana swap aggregators.

api.oanor.com/kyberswap-api

MEXC API

Live spot market data from MEXC, a top centralised crypto exchange known for listing the widest range of altcoins and new tokens first. The ticker endpoint returns a symbol's 24h last price, bid/ask, high/low, volume and change. The tickers endpoint returns the top symbols by 24h quote volume. The movers endpoint returns the biggest 24h gainers or losers among liquid pairs — the altcoin-momentum view MEXC is watched for. Read live from MEXC, nothing stored. This is MEXC's own spot ticker and altcoin-momentum layer — a distinct centralised-exchange venue, separate from other exchange feeds and from DEX, lending and oracle APIs.

api.oanor.com/mexc-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

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

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