# Bullish WebSocket Index Data API

**Canonical:** https://apis.io/apis/bullish/ws-index-data/  
**Provider:** Bullish — https://apis.io/providers/bullish/  
**Base URL:** wss://api.exchange.bullish.com  
**Documentation:** https://docs.exchange.bullish.com/websocket/public/index-data

Bullish WebSocket Index Data API is one of 32 APIs that [Bullish](https://apis.io/providers/bullish/) publishes on the [APIs.io](https://apis.io/) network, described by an AsyncAPI event-driven specification. Tagged areas include Market Data, Index, and WebSocket. The published artifact set on APIs.io includes an AsyncAPI specification and API documentation.

AsyncAPI 3.0.0 document for streaming Bullish index prices, with the subscribed asset set controlled by subscription-message parameters.

## Machine-readable artifacts (2)

- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/bullish/refs/heads/main/asyncapi/bullish-ws-index-data-asyncapi.yml
- **Documentation** — https://docs.exchange.bullish.com/websocket/public/index-data

## Other Bullish APIs (12)

- [Bullish Deprecated Features and APIs](https://apis.io/apis/bullish/deprecated-api/)
- [Bullish WebSocket Multi-Order Book API](https://apis.io/apis/bullish/ws-orderbook/)
- [Bullish WebSocket Anonymous Trades API](https://apis.io/apis/bullish/ws-trades/)
- [Bullish WebSocket Anonymous Ticks API](https://apis.io/apis/bullish/ws-ticks/)
- [Bullish WebSocket Auction Feed API](https://apis.io/apis/bullish/ws-auction/)
- [Bullish WebSocket Private Data API](https://apis.io/apis/bullish/ws-private-data/)
- [Bullish FIX API](https://apis.io/apis/bullish/fix-api/)
- [Bullish Aggregator API](https://apis.io/apis/bullish/aggregator-api/)
- [Bullish Account Assets API](https://apis.io/apis/bullish/bullish-account-assets-api/)
- [Bullish Amm Instructions API](https://apis.io/apis/bullish/bullish-amm-instructions-api/)
- [Bullish Asset Data API](https://apis.io/apis/bullish/bullish-asset-data-api/)
- [Bullish Auction Public API](https://apis.io/apis/bullish/bullish-auction-public-api/)

## Tags

Market Data, Index, WebSocket

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/bullish/ws-index-data/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/bullish/.