> ## Documentation Index
> Fetch the complete documentation index at: https://docs.amberdata.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Volatility Index and Volatility Index Decorated

# Definition

The "Volatility Index" is a VIX-like implied volatility index calculation maintained by Deribit for the Bitcoin (BTC) and Ethereum (ETH) cryptocurrency markets. It serves as a benchmark for the market's expectation of 30-day volatility in the underlying asset.

[![Watch the video](https://img.youtube.com/vi/4LMvh-ZhrL8/maxresdefault.jpg)](https://youtu.be/4LMvh-ZhrL8)

***

# Details

The Volatility Index is designed to reflect a 30-day constant expiration, similar to the CBOE Volatility Index (VIX) for traditional equity markets. The index is calculated based on the weighted average of out-of-the-money (OTM) BTC or ETH option prices, capturing the market's consensus on near-term future volatility.

The weighting scheme and other details of the calculation can be found here: [https://insights.deribit.com/exchange-updates/dvol-deribit-volatility-index-vix-index-for-comparison/](https://insights.deribit.com/exchange-updates/dvol-deribit-volatility-index-vix-index-for-comparison/)

In addition to the standard Volatility Index, we also provide a "Volatility Index Decorated" endpoint. This version of the index incorporates additional metadata to enhance the analysis and interpretation of the volatility index.

***

# API Endpoints

[/Volatility Index](/http/analytics/derivatives/volatility-index)

[/Volatility Index Decorated](/http/analytics/derivatives/volatility-index-decorated)

***

# Availability

| Exchange | Start Date (YYYY-MM-DD) | Granularity |
| -------- | ----------------------- | ----------- |
| Deribit  | 2021-05-01              | Minutely    |

***

***