Access real-time and historical cryptocurrency volatility indexes through CoinAPI's Indexes API.
CoinAPI CAPIVIX provides standardized 30-day implied volatility benchmarks for major crypto markets, helping traders, institutions, hedge funds, risk teams, researchers, and developers measure expected market volatility using options data. Built on a transparent, VIX-inspired methodology, CAPIVIX supports risk management, options analytics, market sentiment analysis, quantitative research, and volatility-aware trading strategies.
CAPIVIX is CoinAPI's Cryptocurrency Volatility Index, designed to measure the market's expectation of future volatility for major digital assets.
Unlike price indexes, CAPIVIX doesn't estimate where Bitcoin or Ethereum should trade. Instead, it measures how much volatility the options market expects over the next 30 days.
In simple terms:
CAPIVIX = Standardized 30-day implied volatility derived from cryptocurrency options market dataBecause it is based on implied volatility rather than historical price movements, CAPIVIX provides a forward-looking measure of market risk and uncertainty, making it valuable for trading, hedging, portfolio risk management, and quantitative analysis.
Spot prices tell you where the market is today. CAPIVIX helps answer a different question: “How much volatility does the market expect next?”
As expectations change, implied volatility often reacts before price alone tells the full story. Monitoring those changes helps traders, analysts, and risk teams better understand market conditions and prepare for potential shifts in volatility.
CoinAPI calculates CAPIVIX using cryptocurrency options market data to estimate 30-day implied volatility for supported assets.
CoinAPI collects options market data for supported cryptocurrency markets, providing a broad view of current options pricing.
Relevant option contracts across available strikes and expiries are selected to support a standardized 30-day volatility estimate.
The methodology applies put-call parity to derive forward pricing inputs from options market data.
Expected market variance is calculated using a methodology inspired by traditional volatility indexes.
The calculated variance is converted into a standardized 30-day implied volatility benchmark, making values consistent and comparable over time.
CAPIVIX is continuously recalculated as options market conditions change, providing up-to-date measures of expected market volatility.
Depending on the endpoint, the CoinAPI Indexes API returns volatility index values, timestamps, metadata, and historical time-series information.
| Field | What it means |
|---|---|
| index_id | Standardized identifier of the requested CAPIVIX index |
| time_period_start | Beginning of the reported interval |
| time_period_end | End of the reported interval |
| time_open | Opening timestamp |
| time_close | Closing timestamp |
| value_open | Opening CAPIVIX value |
| value_high | Highest CAPIVIX value |
| value_low | Lowest CAPIVIX value |
| value_close | Closing CAPIVIX value |
| value_count | Number of observations within the interval |
These fields allow developers to retrieve historical volatility benchmarks, monitor changes in expected market risk, analyze long-term volatility trends, and integrate CAPIVIX into trading, research, and risk management systems. Response fields vary depending on the selected endpoint.
CoinAPI CAPIVIX is available through the CoinAPI Indexes API for both real-time and historical workflows.
| Feature | REST API | WebSocket API |
|---|---|---|
| Access Method | Request-response | Persistent streaming connection |
| Best For | Historical analysis, research, backtesting, risk models | Live monitoring, trading dashboards, alerting, risk systems |
| Data | Historical and point-in-time CAPIVIX values, metadata | Real-time CAPIVIX updates |
| Typical Response | Historical volatility values, timestamps, metadata | Continuous updates for subscribed indexes |
| Common Workflows | Quant research, volatility analysis, stress testing, model calibration | Live dashboards, trading systems, market monitoring, alerting |
| Key Parameters | index_id, time_start, time_end, period_id, limit | Subscription parameters depend on the selected channel |
| Update Frequency | On demand | Real time (every 100 ms) |
| When to Choose | Historical volatility analysis | Continuous monitoring of market expectations |
Many organizations use both APIs together. REST is typically used for historical research and model development, while WebSocket delivers continuously updated cryptocurrency volatility indexes for production trading, monitoring, and risk management.
CAPIVIX provides a standardized cryptocurrency volatility benchmark by measuring the market's expectation of future price volatility using options market data instead of historical price movements.
By measuring expected volatility over a standardized 30-day horizon, CAPIVIX delivers a transparent crypto volatility benchmark that can be applied consistently across research, trading, and risk management systems.
Spot market prices show where an asset is trading right now, but they don't indicate how much uncertainty the market expects in the future. A CAPIVIX Index measures 30-day implied volatility derived from cryptocurrency options markets, providing a forward-looking view of expected market risk rather than a reference price.
| If you need… | Use |
|---|---|
| Current cryptocurrency price | Spot market data |
| Historical market prices | OHLCV, Trades, or Quotes |
| Expected future market volatility | CAPIVIX Index |
| Market uncertainty benchmark | CAPIVIX Index |
| Options market sentiment | CAPIVIX Index |
| Portfolio valuation | VWAP or PRIMKT Index |
| Execution analysis | Trades, Quotes, or Order Books |
Spot prices remain essential for pricing and execution workflows, while CAPIVIX provides a standardized benchmark for monitoring expected volatility and changing market conditions.
Although both measure volatility, they answer different questions. Historical volatility measures how much an asset has moved in the past. CAPIVIX measures how much volatility the options market expects over the next 30 days.
| Historical Volatility | CAPIVIX Index |
|---|---|
| Based on historical price movements | Based on cryptocurrency options prices |
| Measures realized volatility | Measures implied volatility |
| Backward-looking | Forward-looking |
| Best for historical analysis | Best for risk monitoring and forecasting |
| Uses historical market data | Uses options market data |
Choose Historical Volatility when analyzing previous market behavior or validating trading models. Choose CAPIVIX when you need a forward-looking benchmark for expected volatility, market sentiment, and portfolio risk.
CoinAPI offers multiple index methodologies designed to answer different questions about cryptocurrency markets.
| If you need… | Use |
|---|---|
| Expected cryptocurrency volatility | CAPIVIX |
| Options-based market analysis | CAPIVIX |
| Market sentiment and risk monitoring | CAPIVIX |
| Principal-market reference pricing | PRIMKT |
| Fair value measurement | PRIMKT |
| Financial reporting and NAV calculation | PRIMKT |
| Volume-weighted market pricing | VWAP |
| Execution benchmarking | VWAP |
| Market-wide price analysis | VWAP |
CAPIVIX measures expected future cryptocurrency volatility using options market data, providing a standardized benchmark for risk management, derivatives research, market sentiment analysis, and volatility-aware trading strategies.
PRIMKT identifies the most liquid eligible spot market for each asset pair and uses its latest traded price as a transparent crypto benchmark price for valuation and financial reporting.
VWAP calculates a volume-weighted cryptocurrency reference price across multiple eligible exchanges, making it well suited for execution benchmarking, trading analytics, and market-wide pricing.
Reliable volatility benchmarks depend on a methodology that users can understand, document, and apply consistently.
This transparency helps trading firms, quantitative teams, institutions, and risk managers understand how cryptocurrency volatility benchmarks are calculated and apply them consistently across production workflows.
Enterprise clients can work with CoinAPI to build custom cryptocurrency volatility indexes tailored to proprietary trading, risk management, or analytical requirements.
Index methodology, delivery, infrastructure, and licensing are defined as part of each Enterprise deployment.
Modern crypto applications need more than accurate market prices. They need a reliable way to understand how much uncertainty the market is pricing into the future.
CoinAPI CAPIVIX Indexes deliver standardized 30-day implied volatility benchmarks through REST and WebSocket APIs using a transparent methodology built from cryptocurrency options market data. Explore the documentation to start integrating CoinAPI CAPIVIX Indexes, or contact our team to discuss Enterprise deployments and custom volatility benchmark solutions.