Put/call ratio per expiration (term structure)
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.
api.oanor.com/putcallratio-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 573 ms
- Server probes · 24h
- Subscribers
- 4,523
- active
- Total calls
- 84
- last 7 days
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
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
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
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
Built by
Related APIs
Other APIs with overlapping tags.
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
Consumer Inflation Expectations API
What households in each economy expect for prices and for the wider economy — the OECD consumer surveys as an API, live, no key. Every month consumers are asked whether they expect prices to rise faster or slower over the year ahead, and whether they think the general economic situation will improve or worsen. The OECD harmonises the answers into balances — the share answering up/better minus the share answering down/worse, on a scale around zero. Consumer inflation expectations are one of the most closely watched soft indicators in central banking: if households start expecting higher inflation, they bring forward purchases and demand higher wages, which can make inflation self-fulfilling, so policymakers track whether expectations stay anchored. The economic-situation balance is the household read on where the economy is heading, and it leads consumer spending. The inflation endpoint ranks every economy by its consumer inflation-expectations balance — where households most expect prices to climb. The economy endpoint ranks by the economic-situation outlook. The country endpoint gives one economy's inflation and economic-situation balances side by side with the month-on-month change. Each reading carries its own month and discontinued series are excluded, so the board is genuinely current. The consumer-survey / inflation-expectations cut — distinct from the composite Business & Consumer Confidence board (which gives only the headline confidence index, not the inflation-expectations component), the manufacturing business-survey board, the realised-inflation feeds, and the generic multi-provider data aggregator. Balances are in percentage points; figures are monthly.
api.oanor.com/consumersurvey-api
Business & Consumer Confidence API
How optimistic the firms and households of each economy are right now — the OECD Business and Consumer Confidence Indicators as an API, live from the OECD's official statistics, no key. Confidence is soft data: it comes from monthly surveys asking businesses about orders, output and expectations, and consumers about their finances and the outlook, and it moves before the hard data does, which makes it one of the most-watched early reads on demand. The OECD standardises both into amplitude-adjusted indices that oscillate around 100 — above 100 means confidence is above its long-term average (optimism), below 100 means below average (pessimism) — and the direction (rising or falling) tells you whether sentiment is improving or deteriorating. The business endpoint returns the Business Confidence Indicator (BCI) for every economy the OECD tracks (and the aggregates — G7, G20, OECD, the euro area), ranked, each with its current value, month-on-month change, optimism/pessimism reading and direction. The consumer endpoint returns the Consumer Confidence Indicator (CCI) the same way. The country endpoint puts both side by side for one economy — the firm view and the household view together, with a combined read. Discontinued series are excluded and each reading carries its own period, so the board is genuinely current. The survey-based confidence / soft-data cut — distinct from the OECD composite-leading-indicator board (a different measure built to lead GDP), from the bond-yield and inflation boards, and from the generic multi-provider data aggregator. Figures are monthly; this is the sentiment lens on the world's economies.
api.oanor.com/confidence-api
COT Index API
The normalised Commitments-of-Traders positioning signal traders actually act on, computed live from the US CFTC public reporting API — no key. A raw COT net-position number means little on its own: "large speculators are +176,020 contracts net long gold" tells you nothing until you know whether that is high or low versus history. The COT Index fixes that by normalising each trader group's current net futures position to a 0-100 percentile over a lookback window (the classic Larry Williams 156-week / three-year COT Index): 100 = the most net-long that group has been in the window, 0 = the most net-short. Above 80 marks a crowded long extreme (contrarian bearish), below 20 a crowded short extreme (contrarian bullish). The index endpoint returns one market's COT Index for both the large speculators (non-commercials) and the commercial hedgers, with the current net, the window min/max, the week-over-week change and an extreme flag. The screener endpoint computes the index across a curated set of 17 FX, stock-index, metal, energy and grain futures and ranks them, surfacing which markets sit at a positioning extreme right now. This is the normalised positioning-signal cut — distinct from the raw COT-report feed (which serves the weekly long/short contract counts), and from the price, open-interest and options-positioning APIs. It turns the report into the signal.
api.oanor.com/cotindex-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())Ratings
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