Longbridge OpenAPI SDK

Longbridge OpenAPI provides programmatic quote trading interfaces for investors with research and development capabilities and assists them to build trading or quote strategy analysis tools based on their own investment strategies. The functions fall into the following categories:

Trading - Create, amend, cancel orders, query today’s/past orders and transaction details, etc.
Quotes - Real-time quotes, acquisition of historical quotes, etc.
Portfolio - Real-time query of the account assets, positions, funds
Real-time subscription - Provides real-time quotes and push notifications for order status changes

This repo contains the following main components:

Name	Document	Description
Rust	Doc	Longbridge OpenAPI for Rust `(>= 1.89.0)`
Python	Doc	Longbridge OpenAPI for Python 3 `(>= 3.8)`
Node.js	Doc	Longbridge OpenAPI for Node.js `(>= 10)`
Java	Doc	Longbridge OpenAPI for Java `(>= 11)`
C	Doc	Longbridge OpenAPI for C `(>= C99)`
C++	Doc	Longbridge OpenAPI for C++`(>= C++17)`
Go		https://github.com/longbridge/openapi-go
MCP		An MCP server implementation for Longbridge OpenAPI

Context Types

Context	Description
`QuoteContext`	Real-time quotes, candlesticks, options, warrants, watchlists, push subscriptions
`TradeContext`	Orders, positions, account balance, executions, cash flow
`AssetContext`	Account statement download
`ContentContext`	News, community topics
`FundamentalContext`	Financial reports, analyst ratings, dividends, valuation, company overview, shareholders
`MarketContext`	Market status, broker holdings, A/H premium, trade statistics, anomaly alerts, index constituents
`CalendarContext`	Financial calendar (earnings, dividends, splits, IPOs, macro data, market closures)
`PortfolioContext`	Exchange rates, portfolio P&L analysis
`AlertContext`	Price alert management (add/enable/disable/delete)
`DCAContext`	Dollar-cost averaging plan management
`SharelistContext`	Community sharelist management

Quickstart

Pick a language SDK from the table above and follow its README for install and first request. Full reference docs: https://longbridge.github.io/openapi

SDK Documentation

https://longbridge.github.io/openapi

Troubleshooting

Environment variables not taking effect
- macOS/Linux: export ... only affects the current shell session.
- Windows: setx ... requires opening a new terminal/session to take effect.
Authentication errors (401/403)
- Verify LONGBRIDGE_APP_KEY, LONGBRIDGE_APP_SECRET, LONGBRIDGE_ACCESS_TOKEN are correct and not expired.
- Ensure your OpenAPI app has the required permissions.
Network / connection errors
- Check firewall/proxy rules for HTTPS/WSS.
- If you use a custom endpoint, set LONGBRIDGE_HTTP_URL, LONGBRIDGE_QUOTE_WS_URL, LONGBRIDGE_TRADE_WS_URL.
Quote subscription exits immediately
- Keep the process running (event loop / sleep / blocking receive loop), otherwise you will not see push events.
Debugging
- Enable logs via LONGBRIDGE_LOG_PATH.
- If quotes connect but look empty, keep LONGBRIDGE_PRINT_QUOTE_PACKAGES=true to confirm opened quote packages.

Minimal Verification

If you're not sure whether your environment / credentials are correct, start with the built-in HTTP client examples.

Python:

bash
python examples/python/http_client.py

Node.js:

bash
node examples/nodejs/http_client.js

Rust:

bash
cargo run --manifest-path examples/rust/Cargo.toml -p http_client

Java (from the example module directory):

bash
cd examples/java/http_client
mvn -q -DskipTests package
mvn -q -DskipTests exec:java

C/C++:
- Use the sources in examples/c/http_client/main.c and examples/cpp/http_client/main.cpp.
- Build instructions depend on your toolchain; see the corresponding language SDK README.

Expected results:

If credentials are valid and network is reachable, the HTTP call returns JSON.
If it returns 401/403, check your LONGBRIDGE_APP_KEY, LONGBRIDGE_APP_SECRET, LONGBRIDGE_ACCESS_TOKEN.
If it times out / cannot connect, check proxy/firewall and your endpoint env vars.