REST API Order Book

REST API - Order Book Data

Order book data contains L2 depth information showing bid and ask levels with prices and quantities. Each file contains one hour of order book snapshots and updates.

GET

/download

Download Order Book Data

Download hourly order book data files for specific trading pairs and exchanges.

Request Parameters

Parameter	Type	Required	Description
file	string	Yes	File path following the pattern: `{exchange}/{date}/{hour}/{symbol}_orderbook.parquet.zst`
api_key	string	No	Optional. Omit for the 60 requests/minute free tier, or provide an API key when not using JWT authentication.

Example: Download BTCUSDT Order Book for June 22, 2025, Hour 20

bash

curl "https://api.cryptohftdata.com/download?file=binance_spot/2025-08-01/20/BTCUSDT_orderbook.parquet.zst&api_key=your-api-key-here" \
  -o BTCUSDT_orderbook_20.parquet.zst