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API · /putcallratio-api

Put/Call Ratio & Options Sentiment API

healthy 4,523 Subscribers

Live (15-minute delayed) options put/call sentiment analytics for US stocks and indices, computed from CBOE's public delayed-quotes feed. The ratio endpoint aggregates the entire option chain into the headline sentiment gauges — the put/call ratio by volume and by open interest, the total put and call volume and open interest, the contract counts, and the underlying price with its 30-day implied volatility (IV30) — plus a plain-language sentiment lean. The expiries endpoint breaks the put/call ratio down by expiration date, giving the term structure of sentiment. The strikes endpoint maps call-versus-put volume and open interest across strikes for an expiration, showing where positioning sits. This is the computed options-sentiment and positioning view — ratios and skew, not a contract dump — distinct from the raw options-chain, the volatility-index and the options-pricing calculators in the catalogue. US index options use an underscore-prefixed symbol (_SPX, _VIX); a ratio above 1 means more puts than calls (defensive/bearish lean). Live, no key on the upstream, nothing stored.

#put-call-ratio #options-sentiment #sentiment #options #trading #positioning #cboe #derivatives
api.oanor.com/putcallratio-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
626 ms
Server probes · 24h
Subscribers
4,523
active
Total calls
0
last 7 days
status Full status page → · 4 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 19,000 calls / month
  • 4 requests / second
  • Hard cap (429 above quota, no overage)
  • 19,000 calls/month
  • 4 req/sec
  • Ratio, term structure & strike map
  • No credit card
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Starter

€9.10 /month

  • 225,000 calls / month
  • 12 requests / second
  • Hard cap (429 above quota, no overage)
  • 225k calls/month
  • 12 req/sec
  • All symbols & expirations
  • Email support
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Pro

€25.80 /month

  • 960,000 calls / month
  • 30 requests / second
  • Hard cap (429 above quota, no overage)
  • 960k calls/month
  • 30 req/sec
  • Sentiment screening & signals
  • Priority support
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Scale

€59.80 /month

  • 3,450,000 calls / month
  • 80 requests / second
  • Hard cap (429 above quota, no overage)
  • 3.45M calls/month
  • 80 req/sec
  • Desk / quant scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Stock Market Fear & Greed Index API

Live CNN Fear & Greed Index for the US stock market — no key, nothing stored. The equity-market sentiment gauge: a single 0–100 score (0 = extreme fear, 100 = extreme greed) built from seven market indicators, distinct from the crypto Fear & Greed index in the catalogue. The index endpoint returns the headline score and rating plus the previous close and the readings one week, one month and one year ago, so you can see how sentiment has shifted. The components endpoint breaks the index into its seven underlying indicators — market momentum, stock-price strength, stock-price breadth, put/call options, market volatility (VIX), junk-bond demand and safe-haven demand — each with its own score and fear/greed rating, so you can see what is actually driving sentiment. The history endpoint returns the daily score timeline for the last year. Build market-sentiment dashboards, contrarian-signal bots, risk dashboards and newsletter widgets on top of the most-watched sentiment gauge in equities. Score bands: 0–24 extreme fear, 25–44 fear, 45–55 neutral, 56–75 greed, 76–100 extreme greed.

api.oanor.com/stockfeargreed-api

StockTwits Social API

Live data from StockTwits, the social network for traders and investors where every post is tagged with the stock and crypto tickers ("cashtags") it is about and an optional Bullish or Bearish sentiment — served from the public StockTwits feed, no key, nothing stored. The symbol endpoint returns a ticker's live message stream — the latest posts about $AAPL, $TSLA, $BTC.X or any symbol — each with its author and sentiment, plus the symbol's title and how many users watch it. The trending endpoint returns the tickers traders are talking about most right now, the social pulse of the market. The user endpoint returns a member's profile — followers, following, ideas posted and likes — and their recent posts. Read retail trader sentiment, find what is buzzing and track any investor's feed as live JSON. This is the trader-social-network cut — distinct from the price, market-data and FX-signal APIs in the catalogue.

api.oanor.com/stocktwits-api

Crypto Trending API

What the crypto market is searching for right now, served live from the public CoinGecko trending feed with no key. This is hype and attention data — distinct from market-cap rankings, exchange tickers and DeFi feeds — surfacing the coins, NFT collections and categories with the biggest spike in search interest over the last 24 hours. The coins endpoint returns the trending coins ranked by search popularity, each with its live USD price, 24-hour change, market cap, 24-hour volume, market-cap rank and BTC price. The nfts endpoint returns the trending NFT collections with floor price (native and display), 24-hour floor change and 24-hour volume. The categories endpoint returns the trending narratives and sectors with market cap, volume and 24-hour change. Trending means ranked by CoinGecko search popularity, so rank 1 is the single most-searched asset of the moment — exactly the signal traders, bots and dashboards use to catch a move early. Read live from CoinGecko, nothing stored beyond a short protective cache. Ideal for crypto dashboards, trading bots, sentiment and hype trackers, and discovery feeds. Live, no key. 3 trending endpoints. For full price history use an OHLC or exchange API.

api.oanor.com/cryptotrending-api

Commitments of Traders API

Live Commitments of Traders (COT) futures-positioning data, served straight from the US CFTC's public reporting API — no key, nothing cached. Every Friday the Commodity Futures Trading Commission publishes who is positioned how in every major futures market — currencies, stock indices, energy, metals, grains — and traders watch it closely as a sentiment and crowding signal. The report endpoint takes a market name (Euro FX, Gold, Crude Oil, S&P 500, Bitcoin) and returns the latest weekly report: how many long and short contracts are held by commercials (the hedgers), by non-commercials (the large speculators) and by small non-reportable traders, the net position of each group, the total open interest, each group's share of open interest, the week-over-week change and the number of traders — Gold shows commercials net short while large speculators run net long. The markets endpoint searches the hundreds of reported markets so you can find the exact name. The history endpoint returns the weekly path of positioning for a market. This is the positioning-and-sentiment layer for any futures, forex, commodity or macro trading app. Live from the CFTC, nothing stored. Distinct from price and open-interest APIs — this is who is long and short, by trader category. 4 endpoints.

api.oanor.com/cot-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Put/Call Ratio & Options Sentiment API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Put/Call Ratio & Options Sentiment API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Put/Call Ratio & Options Sentiment 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 Put/Call Ratio & Options Sentiment API cost?
Put/Call Ratio & Options Sentiment API has a free tier with 100 calls / month. Paid plans start at €9.10 / 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 Put/Call Ratio & Options Sentiment API GDPR-compliant?
All requests to Put/Call Ratio & Options Sentiment 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/putcallratio-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/putcallratio-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/putcallratio-api/SOME_PATH");
curl_setopt($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/putcallratio-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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