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API · /obv-api

OBV & Volume Screener (Multi-Asset) API

healthy 4,245 Subscribers

Which markets are under accumulation or distribution and where volume is surging, computed live from Yahoo Finance (no key, nothing stored). Price tells you what is happening; volume tells you whether to believe it. On-Balance Volume adds the day's volume when a market closes up and subtracts it when it closes down, so a rising OBV means buyers are in control (accumulation) and a falling OBV means sellers are (distribution) — and a divergence between OBV and price is an early warning of a turn. A volume surge — today's volume well above its recent average — flags conviction behind a move. For a cross-asset, cross-sector universe — equity indices and sectors, gold, oil, commodities, bonds and crypto — this computes each asset's OBV trend over the last month, its latest volume versus the 20-day average, and tags it accumulation, distribution or neutral. The screener endpoint returns the markets under accumulation and distribution and the ones with a volume surge. The asset endpoint returns one market's OBV/volume card. The universe endpoint lists what is covered. The cross-asset volume / OBV screener cut — distinct from the bring-your-own-candle volume-indicator API and the crypto volume-profile API; it adds the volume dimension the price-only screeners miss.

#obv #volume #accumulation #distribution #money-flow #trading #screener #cross-asset #technical #signals
api.oanor.com/obv-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
218 ms
Server probes · 24h
Subscribers
4,245
active
Total calls
0
last 7 days
status Full status page → · 4 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 840 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 840 calls/month
  • 2 req/sec
  • Multi-asset OBV/volume screener
  • Accumulation/distribution + surges
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Starter

€10.16 /month

  • 18,600 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 18.6k calls/month
  • 6 req/sec
  • Volume-surge detection
  • Email support
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Pro

€31.40 /month

  • 92,500 calls / month
  • 16 requests / second
  • Hard cap (429 above quota, no overage)
  • 92.5k calls/month
  • 16 req/sec
  • Production money-flow signals
  • Priority support
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Business

€72.80 /month

  • 502,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 502k calls/month
  • 40 req/sec
  • High-volume OBV feed
  • Dedicated support
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Related APIs

Other APIs with overlapping tags.

Volume Indicators API

Live volume-based technical indicators that traders run to confirm a move with the volume behind it, computed on demand from the OHLCV candles you pass in — no key, no cache, nothing stored. The mfi endpoint returns the Money Flow Index, a volume-weighted version of RSI that swings from 0 to 100, with an overbought reading above 80 and oversold below 20. The obv endpoint returns On-Balance Volume, the running total that adds a candle's volume on an up close and subtracts it on a down close, together with whether it is rising or falling — rising OBV confirms buying pressure. The cmf endpoint returns the Chaikin Money Flow, which sums money-flow volume over the lookback to show whether buyers or sellers are in control. These indicators all need the volume of each candle, which makes them a fundamentally different tool from price-only indicators like RSI, MACD, Stochastic and ADX: they answer whether volume is confirming the price move or diverging from it. Works for any market — forex, stocks, crypto or commodities — because you supply the candles with volume. Computed locally and deterministically, so it is instant and private. Ideal for trading bots, divergence screeners, breakout confirmation and trading dashboards. Candles are open:high:low:close:volume. Live, nothing stored. 3 compute endpoints. For price-only indicators use a technical-indicators, oscillators or trend-indicators API.

api.oanor.com/volumeindicators-api

Crypto Exchanges API

Live rankings and comparison of crypto exchanges, served from the public CoinPaprika feed — no key, nothing cached. Rank every crypto exchange by adjusted 24h volume with its 7d/30d volume, number of markets and currencies and confidence score; pull one exchange's full profile (volumes, market count, website and social links, status); list an exchange's trading pairs with price and 24h volume; and search exchanges by name. A cross-exchange comparison layer, distinct from single-exchange ticker feeds and whole-market price feeds — it answers which venues are biggest and what they trade. Volumes in USD; adjusted = wash-trade-filtered.

api.oanor.com/cryptoexchanges-api

Crypto Volume API

Live most-traded crypto pairs by 24-hour spot volume as an API, powered by Binance. It ranks the trading pairs by their 24-hour quote volume — where the real liquidity and activity is right now — with each pair's last price, daily change, 24-hour high and low, base and quote volume, and the number of trades. Rank by any quote currency (USDT, BTC, ETH, USDC), or look a single pair up for its full 24-hour stats. The spot-volume and market-activity leaderboard for trading, screening and dashboard apps. Live, no key, no cache. Distinct from price-change movers and from DEX-volume APIs — this is centralised-exchange spot trading volume.

api.oanor.com/cryptovolume-api

DEX Volume API

Live decentralised-exchange trading volume across the whole crypto ecosystem as an API, streamed from the DefiLlama DEX feed. For thousands of DEX protocols: the trading volume over the last 24 hours, 7 days and 30 days, the day/week/month change, the chains they run on, and each one's share of the total DEX market. Rank the busiest DEXes, drill into a single one, see how trading volume is split across chains, or read the market-wide total. Built for crypto, trading and dashboard apps. Live, no key. Distinct from TVL, fees, yield and stablecoin APIs — this is the on-chain trading-activity surface.

api.oanor.com/dexvolume-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for OBV & Volume Screener (Multi-Asset) API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call OBV & Volume Screener (Multi-Asset) API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for OBV & Volume Screener (Multi-Asset) 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 OBV & Volume Screener (Multi-Asset) API cost?
OBV & Volume Screener (Multi-Asset) API has a free tier with 100 calls / month. Paid plans start at €10.16 / 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 OBV & Volume Screener (Multi-Asset) API GDPR-compliant?
All requests to OBV & Volume Screener (Multi-Asset) 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/obv-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/obv-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/obv-api/SOME_PATH");
curl_setopt($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/obv-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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