> For the complete documentation index, see [llms.txt](https://en.apis.alltick.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://en.apis.alltick.co/websocket-api.md).

# Websocket API

- [Websocket request example](https://en.apis.alltick.co/websocket-api/websocket-request-example.md): Websocket request example
- [Websocket Interface API](https://en.apis.alltick.co/websocket-api/websocket-interface-api.md)
- [Latest Trade Price (Real-time Tick Data) Batch Subscription](https://en.apis.alltick.co/websocket-api/websocket-interface-api/transaction-quote-subscription.md): This API supports batch subscription to real-time trade prices (tick-by-tick data、Latest Price) but does not provide historical trade prices. Each WebSocket connection allows one active subscription
- [Order Book (Real-time Tick-by-Tick, Market Depth) Subscription](https://en.apis.alltick.co/websocket-api/websocket-interface-api/handicap-quote-subscription.md): This interface supports subscribing to the latest market depth (real-time tick-by-tick, Order Book) data for products, but does not support historical market depth or historical tick data. Interface
- [Cancel quote subscription](https://en.apis.alltick.co/websocket-api/websocket-interface-api/cancel-quote-subscription.md): Cancel quote subscription Request - Protocol Number：22006 Data definition Data Structure (JSON)
- [Ping Pong](https://en.apis.alltick.co/websocket-api/websocket-interface-api/ping-pong.md): The requester is required to send a heartbeat request every 10 seconds. If no heartbeat request is received within 30 seconds, it will be considered a timeout, and the requester's WebSocket connection
- [K-line push (not supported)](https://en.apis.alltick.co/websocket-api/websocket-interface-api/ping-pong-1.md): K-line Push Explanation Alltick's WebSocket interface does not support K-line data push. Both historical and real-time K-lines can only be accessed through the HTTP interface. Recommended implementati