> For the complete documentation index, see [llms.txt](https://docs.hydromancer.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hydromancer.xyz/readme/websocket/orderbook-streaming.md).

# Orderbook streaming

- [bbo](https://docs.hydromancer.xyz/readme/websocket/orderbook-streaming/bbo.md): Stream real-time best bid and offer for a coin.
- [l2Book](https://docs.hydromancer.xyz/readme/websocket/orderbook-streaming/l2book.md): Stream real-time L2 orderbook snapshots per coin.
- [l2BookDiff](https://docs.hydromancer.xyz/readme/websocket/orderbook-streaming/l2bookdiff.md): Stream real-time L2 orderbook diffs (incremental updates) per block.
- [l4BookUpdates](https://docs.hydromancer.xyz/readme/websocket/orderbook-streaming/l4bookupdates.md): Stream real-time L4 orderbook updates per block.