#volatility

Live Average True Range and volatility-stop analytics that traders run to size stops to market noise, computed on demand from the OHLC candles you pass in — no key, no cache, nothing stored. The atr endpoint returns the Average True Range using Wilder's smoothing, its value as a percent of price, and the latest true range — the single number that tells you how much an instrument typically moves. The stops endpoint returns ATR-based stop levels: the Chandelier Exit for a long and for a short (highest high or lowest low offset by a multiple of ATR) and, if you pass an entry price, an ATR trailing stop with its distance in money and percent. The keltner endpoint returns the Keltner Channel — an EMA mid-line with ATR-scaled upper and lower bands — and where the last price sits. Because true range needs the full high, low and close, this is a different tool from closes-only indicator APIs and from single-coin volatility feeds: you supply the candles for any market — forex, stocks, crypto or commodities. Computed locally and deterministically, so it is instant and private. Ideal for stop placement, position sizing, breakout filters and risk dashboards. ATR uses Wilder's smoothing. Live, nothing stored. 3 compute endpoints. For closes-only indicators like RSI or MACD use a technical-indicators API.

api.oanor.com/atr-api

Live historical foreign-exchange rates and analytics from the European Central Bank's daily reference rates — no key, nothing cached. Get the daily rate of a currency pair over any date range; the absolute and percentage move between two dates with its high and low; min, max, average, volatility and the best and worst day over a range; and every rate on a specific date. An FX history-and-analytics layer, distinct from spot-conversion feeds — it turns the ECB rate archive into the time series, moves and volatility a trader or analyst studies. Around 30 currencies, weekdays, back to 1999.

api.oanor.com/fxhistory-api

Live risk-adjusted-return analytics that quants and portfolio managers run on a return or price series — computed on demand, no key, nothing cached. Get the Sharpe ratio with annualised return and volatility; the Sortino ratio using downside deviation; periodic and annualised volatility, downside deviation and semivariance; and historical and parametric Value-at-Risk plus Conditional VaR (Expected Shortfall) at any confidence level. Every value is computed live from your input and works for any market — forex, stocks, crypto or funds. A risk-statistics engine, distinct from raw price feeds, from technical-indicator tools and from option-pricing tools: it turns a series of returns into the risk-adjusted performance numbers a strategy is judged on.

api.oanor.com/riskmetrics-api

Live market "fear gauges" across asset classes as an API, served from Yahoo Finance. The VIX is the market's headline fear index — the S&P 500's 30-day implied volatility — and this returns it alongside the rest of the family: the 9-day VIX (short-term fear), the Nasdaq-100 (VXN) and Dow (VXD) volatility indices, crude-oil (OVX) and gold (GVZ) volatility, and the VVIX, the volatility of the VIX itself. Each comes with its current level, the day's change, and its day and 52-week range, and the board adds a plain-language fear regime from the VIX (complacent, normal, elevated, high or extreme). Get the whole board or one index. The implied-volatility and risk-sentiment layer for trading, macro-research and dashboard apps. Live, no key, no cache. Distinct from equity-index, crypto-volatility and FX-volatility APIs — this is the cross-asset implied-volatility (fear) suite.

api.oanor.com/volatilityindices-api

Live crypto realized (historical) volatility as an API, computed from Binance daily candles. For any coin it returns the annualized realized volatility over the 7-, 30- and 90-day windows — the standard deviation of daily log returns, annualized over 365 days — the average true range as a percent of price, the current price, and a plain-language regime label (low, normal, high or extreme). It can also rank a basket of major coins by their 30-day volatility, so you can see at a glance which assets are calm and which are wild. The volatility layer that options pricing, position sizing and risk dashboards need. Live, no key, no cache. Distinct from price, OHLC and drawdown APIs — this is the realized-volatility analytic.

api.oanor.com/cryptovolatility-api

A live forex volatility analytic as an API, computed from European Central Bank daily reference rates. For any currency pair it returns the realised annualised volatility — the standard deviation of daily log returns scaled to a year — along with daily-return statistics; for the whole basket it ranks 30+ currencies by their average pairwise volatility, showing who is calm and who is choppy. The risk and position-sizing input forex, options and trading desks need. Look up a pair, rank the basket, or get one currency's volatility profile. Live, no key. Distinct from raw exchange-rate and currency-strength APIs — this is the realised-volatility (risk) measure.

api.oanor.com/fxvolatility-api