简体中文 | English

QOS Market API (Quote Ocean System) - Welcome to Integrate

The quote-ocean-system, abbreviated as "QOS Market API," includes real-time APIs for Hong Kong stocks, US stocks, A-shares, cryptocurrency real-time quotes, and digital currency real-time market data. It adopts REST API and WebSocket interfaces, making it very easy to integrate.
Free and open-source stock API, Hong Kong stock API, US stock API, Shanghai-Shenzhen stock API, A-share API for real-time stock market data, cryptocurrency real-time quotes, and digital currency real-time market data.
The QOS Market Quotation System currently provides real-time quotes, real-time K-lines, historical K-line data, etc., for all Hong Kong, US, and Shanghai-Shenzhen stocks, as well as cryptocurrencies (digital currencies). Welcome to try it for free and contact the author. Free trial integration is now available.

Official Website: https://qos.hk
Last Updated: 2025-3-15

Contact the Author:

Email: support@qos.hk
Telegram: https://t.me/stock_quote_api
Telegram Group: https://t.me/stock_quote_api_hk_us_ashre_api

Quickly Experience QOS Quotation System with PostMan

Quick Start - Integration Guide

1. Register for a Key

Visit the official website to quickly register for a key:

Official Website: https://qos.hk

After registering with your email, you will receive key-related information. Please ensure to save it securely, as it will be used in the following steps.

Table of Contents

2. View Some Enum Definitions

2.1. K-line Types
2.2. Trade Directions

3. View Codes and Trading Hours for Various Trading Instruments

4. Request HTTP Interfaces

Add the key to URL parameters or request headers using the key field, then follow the parameters defined in each HTTP interface to retrieve data.
4.1. HTTP Protocol Integration Instructions

4.2. Get Basic Information of Trading Products

4.3. Get Real-time Market Snapshots of Trading Products

4.4. Get Real-time Latest Market Depth of Trading Products

4.5. Get Real-time Latest Trade-by-Trade Details of Trading Products

4.6. Get K-line Data of Trading Products

4.7. Get Historical K-line Data of Trading Products

5. Subscribe or Request Real-time Data via WebSocket Interfaces

Contact the Author:

Email: support@qos.hk
Telegram: https://t.me/stock_quote_api
Telegram Group: https://t.me/stock_quote_api_hk_us_ashre_api