Quote API Overview

Type	Description
Pull	Get Basic Information Of Securities
	Get Real-time Quotes Of Securities
	Get Real-time Quotes Of Option Securities
	Get Real-time Quotes Of Warrant Securities
	Get Security Depth
	Get Security Brokers
	Get Broker IDs
	Get Security Trades
	Get Security Intraday
	Get Security Candlestick
	Get Option Chain Expiry Date List
	Get Option Chain Info By Date
	Get Warrant Issuer IDs
	Get Filtered Warrant
	Get Trading Session Of The Day
	Get Market Trading Days
	Get Security Capital Flow Intraday
	Get Security Capital Distribution
	Get Calculate Indexes Of Securities
	Get Security History Candlestick
Subscription	Get Subscription Information
	Subscribe Quote
	Unsubscribe Quote
Push	Push Real-time Quote
	Push Real-time Depth
	Push Real-time Brokers
	Push Real-time Trades
Individual	Create watched group
	Delete watched group
	Get watched groups
	Update watched group
Security	Get Security List

Description Of Security Code

The security code uses the ticker.region format, ticker represents the code, and example for each market:

• US Market: region is US, for example: AAPL.US.
• HK Market: region is HK, for example: 700.HK.
• CN Market: region is SH for Shanghai Stock Exchange and SZ for Shenzhen Stock Exchange, for example: 399001.SZ, 600519.SH.

Singapore Market (SG): Real-time quotes for Singapore securities are not currently available via Longbridge Developers (API / CLI / MCP). Please use the Longbridge App or desktop client to check SG market quotes.

Access Method

1. Use private protocol and long connection mode to access, please refer to Binary Communication Protocol for access method.
2. Use SDK for access, SDK introduction and download address.

Business Data Serialization

The market request, response and push data are stored as business data in the body part of the data package of the private protocol. We use the Protobuf protocol to serialize business data. Compared with common text protocols (such as JSON, XML, etc.), the Protobuf protocol has the following advantages:

• Faster serialization time.
• Smaller packet size.
• Strongger version forward and backward compatibility.

Quote Protobuf protocol document download link.

Quote Permission Levels

All Quote APIs require OpenAPI quote permissions. These are separate from App/PC/Web permissions and must be activated independently.

Level	What's Included	How to Get
Basic	LV1 US/CN real-time; HK BMP (~15 min delay, no push)	Included with OpenAPI activation
LV1 Real-time (HK)	HK real-time quotes + WebSocket push support	Purchase "LV1 Real-time Quotes (OpenAPI)" via Quote Store
LV2 Subscription	Level 2 order book (depth), HK broker queue	Purchase LV2 subscription via Quote Store
Overnight (US)	US pre/post-market extended-hours data	Purchase LV1 card + set LONGBRIDGE_ENABLE_OVERNIGHT=true

Check your current permissions at Developer Center. Purchase quote cards via Longbridge App → My → My Quotes → Quote Store.