# dxFeed dxLink WebSocket API

**Canonical:** https://apis.io/apis/dxfeed/dxfeed-dxlink-websocket-api/  
**Provider:** dxFeed — https://apis.io/providers/dxfeed/  
**Base URL:** wss://demo.dxfeed.com/dxlink-ws  
**Documentation:** https://kb.dxfeed.com/en/market-data-api/data-access-solutions/websocket.html

dxFeed dxLink WebSocket API is one of 6 APIs that [dxFeed](https://apis.io/providers/dxfeed/) publishes on the [APIs.io](https://apis.io/) network, described by an AsyncAPI event-driven specification. Tagged areas include WebSocket, Streaming, Real-Time, and Market Data. The published artifact set on APIs.io includes API documentation, an AsyncAPI specification, and a GitHub repository.

dxLink is dxFeed's WebSocket protocol for real-time market data streaming with multiplexed virtual channels, authorization, and FEED/DOM (order book) service channels. The protocol is publicly specified as an AsyncAPI 2.4 document in the dxFeed/dxLink GitHub repository, with a live demo server (wss://demo.dxfeed.com/dxlink-ws) and an interactive debug console; client SDKs exist for JavaScript, Java, .NET, C++, and Swift.

## Machine-readable artifacts (4)

- **Documentation** — https://kb.dxfeed.com/en/market-data-api/data-access-solutions/websocket.html
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/dxfeed/refs/heads/main/asyncapi/dxfeed-dxlink-asyncapi.yml
- **Sandbox** — https://demo.dxfeed.com/market-data/dxlink-ws/debug/
- **GitHubRepository** — https://github.com/dxFeed/dxLink

## Other dxFeed APIs (5)

- [dxFeed REST Web Service API](https://apis.io/apis/dxfeed/dxfeed-rest-api/)
- [dxFeed Instrument Profile (IPF) Web Service](https://apis.io/apis/dxfeed/dxfeed-ipf-webservice/)
- [dxFeed Fundamentals API](https://apis.io/apis/dxfeed/dxfeed-fundamentals-api/)
- [dxFeed FIX API](https://apis.io/apis/dxfeed/dxfeed-fix-api/)
- [dxFeed Historical Data Services](https://apis.io/apis/dxfeed/dxfeed-historical-data-services/)

## Tags

WebSocket, Streaming, Real-Time, Market Data

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