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API · /tradesize-api

Crypto Trade Size Distribution API

healthy 4,922 Subscribers

Who is actually trading a pair — retail or whales — read from the composition of Binance's aggregated trade tape by trade size, no key, nothing stored. Order flow tells you the net direction; this tells you the size profile behind it: whether a move is driven by a swarm of small retail prints or a handful of large institutional ones, often the more important signal. The distribution endpoint scans the recent aggregated trades for a pair and buckets them into size cohorts (micro under $1k, retail $1k-$10k, mid $10k-$100k, whale over $100k), returning each cohort's trade count, volume in base and quote and its share of total volume, plus the whale-volume share — the single read on how institutional the flow is. The percentiles endpoint returns the trade-size percentiles (p50, p90, p99) and the average, median and largest trade. The symbols endpoint lists tradable pairs. This is the trade-size composition / participant-mix analytics cut for crypto — distinct from the order-flow / CVD API (which measures buy-versus-sell direction), the order-book depth, the slippage and the price APIs in the catalogue. Pairs are Binance symbols (BTCUSDT) or a coin=BTC&quote=USDT form.

#trade-size #whale-watching #participant-mix #microstructure #crypto #trading #binance
api.oanor.com/tradesize-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
414 ms
Server probes · 24h
Subscribers
4,922
active
Total calls
4
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 400 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 400 calls/month
  • 2 req/sec
  • Distribution + percentiles
  • No credit card
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Starter

€11.66 /month

  • 11,800 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 11,800 calls/month
  • 6 req/sec
  • Up to 5,000-trade scans
  • Email support
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Pro

€35.88 /month

  • 66,000 calls / month
  • 18 requests / second
  • Hard cap (429 above quota, no overage)
  • 66,000 calls/month
  • 18 req/sec
  • Whale-watch & participant-mix pipelines
  • Priority support
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Business

€81.40 /month

  • 350,000 calls / month
  • 45 requests / second
  • Hard cap (429 above quota, no overage)
  • 350,000 calls/month
  • 45 req/sec
  • Trading-desk scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Crypto Order Flow & CVD API

Who is actually hitting the market — buyers or sellers — read live from Binance's aggregated trade tape, no key, nothing stored. Every trade carries a flag for which side was the aggressor: a taker buy lifts the ask, a taker sell hits the bid. Summing those over a window gives order flow — the net buying or selling pressure that price action follows — and its running total is the Cumulative Volume Delta (CVD), the metric order-flow traders watch to spot absorption and divergence. The flow endpoint scans the recent aggregated trades for a pair (up to 5,000) and returns the taker-buy and taker-sell volume in base and quote, the delta (buy minus sell), the CVD over the window, the buy/sell ratio, the share of volume that was buying, a net-pressure label and the time span covered. The large endpoint surfaces the big prints — single aggressive trades above a notional threshold — and tags each as a taker buy or sell, so you see the whale orders moving the tape, with the buy- and sell-side large-trade totals. The symbols endpoint lists tradable pairs. This is the trade-flow / CVD microstructure analytics cut for crypto — distinct from the raw recent-trades feed, the order-book depth and the price, ticker and slippage APIs in the catalogue. Pairs are Binance symbols (BTCUSDT) or a coin=BTC&quote=USDT form.

api.oanor.com/orderflow-api

Crypto Funding Rate Arbitrage API

The perpetual-futures funding rate for a coin side by side across the major exchanges, and the spread between them — computed live from each venue's public API, no key, nothing stored. A perpetual swap charges or pays funding every few hours to keep its price tethered to spot; when the same coin's funding differs across exchanges, a trader can be long the perp where funding is most negative (and gets paid) and short where it is most positive, harvesting the spread market-neutral. The funding endpoint returns, for a coin, the current funding rate on Binance, Bybit, OKX and Gate.io — per interval and annualised — the venue paying the most, the one charging the most, and the cross-exchange spread (the arbitrage edge). The screener endpoint scans a basket and ranks the coins by the size of that spread, surfacing the biggest funding-arbitrage opportunities. This is the cross-exchange funding-rate / basis-arbitrage cut for crypto — distinct from the single-exchange funding-rates feed (one venue), the spot-versus-perpetual basis and the price APIs in the catalogue. Funding is per interval (most venues settle every 8 hours); annualisation assumes three settlements a day, and intervals can differ by venue, so verify before trading. Coins are bases (BTC, ETH).

api.oanor.com/fundingarbitrage-api

Crypto Market Breadth API

The health of the whole crypto market under the surface, computed live from Binance candles — no key, nothing stored. A market-cap index can be dragged up by two or three megacaps while everything else falls; breadth tells you how broad a move really is — how many coins are actually participating. The breadth endpoint scans a basket of liquid coins and returns the share trading above their 20-, 50- and 200-day moving averages (the classic participation gauges), the advancers versus decliners on the day with the advance/decline ratio, the average and median 24-hour change and a regime label (broad strength, mixed or broad weakness). The components endpoint returns the per-coin table behind it — each coin's price, 24-hour change and whether it is above each moving average — so you can see exactly which names are carrying the market. The symbols endpoint lists tradable pairs. This is the market-internals / breadth cut for crypto — distinct from the single-coin momentum, the movers/gainers, the fear-and-greed sentiment index and the price APIs in the catalogue. It answers "is this rally broad or narrow?", not "how is one coin doing?". The default basket is about 30 liquid majors; pass coins=BTC,ETH,... to customise (3-50 coins).

api.oanor.com/cryptobreadth-api

Crypto Options Put/Call Ratio & Sentiment API

The single headline gauge of how the crypto options market is positioned, computed live from Deribit's public option book — no key, nothing stored. The put/call ratio is the amount of put activity divided by call activity: a low ratio means the market is loaded with calls (bullish, greedy positioning), a high ratio means puts dominate (hedging, fear). The ratio endpoint returns, for a currency (BTC or ETH), the market-wide put/call ratio computed two ways — by open interest (the standing positioning) and by 24-hour volume (today's flow) — with the call and put totals, the spot index and a plain-language sentiment label. The expiries endpoint breaks the put/call ratio down by expiry, revealing the term structure of sentiment: whether hedging is concentrated in the near term or further out. This is the aggregate options put/call sentiment cut for crypto — distinct from the US-equity put/call API (a different market), the max-pain / open-interest positioning view, the implied-vol skew surface and the gamma-exposure APIs in the catalogue. Below roughly 0.7 is call-heavy and bullish, above 1.0 put-heavy and defensive; it is most useful read as a contrarian gauge. Currency is BTC or ETH, the two assets Deribit lists liquid options for.

api.oanor.com/cryptoputcall-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Crypto Trade Size Distribution API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Crypto Trade Size Distribution API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Crypto Trade Size Distribution 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 Crypto Trade Size Distribution API cost?
Crypto Trade Size Distribution API has a free tier with 100 calls / month. Paid plans start at €11.66 / 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 Crypto Trade Size Distribution API GDPR-compliant?
All requests to Crypto Trade Size Distribution 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/tradesize-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/tradesize-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/tradesize-api/SOME_PATH");
curl_setopt($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/tradesize-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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