Change Logs

2026-10-17

Market Data API Option historical bars endpoint added start_time and end_time parameters.

Changed

Category	API	Change	Link
API	Market Data API	Option historical bars endpoint added start_time and end_time query parameters, allowing historical bars to be fetched by time range.	List Option Historical Bars

2026-09-20

Interface version header x-version updated from v2 to v3 across the Authentication documents.

Changed

Category	API	Change	Link
Docs	—	x-version request header updated from v2 to v3 in the required headers table.	Authentication Overview
Docs	—	x-version request header updated from v2 to v3 in the required headers table and in the Python/Java signature examples; the example endpoint used throughout was updated from GET /openapi/account/list to GET /trading/accounts/list.	Signature
Docs	—	x-version updated from v2 to v3 in the request header example.	Token

2026-09-12

Documentation: Refined selected descriptions to better align with current API capabilities.

Changed

Category	API	Change	Link
Docs	—	Optimized selected API documentation descriptions for improved clarity and consistency with currently supported interface capabilities. This documentation update does not change API behavior.	—

2026-09-05

API Reference navigation restructured: added Authentication, Market Data, and Trading API top-level groups, a full Fundamentals category, additional Screeners, and Trade Events subscriptions.

Changed

Category	API	Change	Link
Docs	—	API Reference sidebar restructured into top-level groups (Authentication, Market Data API, Trading API). Added a full Fundamentals category (Company Profile, Analyst Target Price/Rating, Forecast EPS, Filings, Earnings/Dividend Calendars, Capital Flow, Industry Comparison, Financial Indicators/Income/Cashflow/Balance Sheet/Alert, and Fund Brief/Performance/Net Value/Holdings/Dividends/Rating/Splits/Files/Allocation), added 4 Screeners (Market Sectors, Market Sector Detail, High Dividend Rank, 52-Week High/Low), and added Trade Events subscriptions (Subscribe Trade Events, Subscribe Position Events).	Trading API Overview

2026-08-22

Optimized API endpoint descriptions and paths.

Changed

Category	API	Change
API	Trading API	Optimized API endpoint descriptions and paths for clarity and consistency.

2026-08-08

Get Stock Instruments update.

Changed

Category	API	Change	Link
API	Trading API	Add sub_category fields to the request and responses	Get Stock Instruments

2026-06-29

Market Data API expanded with three new sub-modules: Screener, Watchlist, and Fundamentals.

New

Category	API	Change	Link
API	Market Data API	Added Screener sub-module under Market Data API: Stock Top Gainers/Losers Rank, Top Active	Stock Top Gainers/Losers Rank · Top Active
API	Market Data API	Added Watchlist sub-module under Market Data API: Get Watchlist, Create Watchlist, Update Watchlist, Delete Watchlist, Get Watchlist Instruments, Add Instruments to Watchlist, Remove Instruments from Watchlist, Update Instruments Sort Order	Get Watchlist
API	Market Data API	Added Fundamentals sub-module under Market Data API: Company Profile, Analyst Target Price, Analyst Rating	Company Profile · Analyst Target Price · Analyst Rating

2026-06-13

Signature document update.

Historical Bars API now supports additional bar intervals, including intraday, daily, weekly, monthly, and yearly timeframes.

Changed

Category	API	Change	Link
Docs	—	Signature document content updated by part format.	Signature
API	Market Data API	Historical Bars endpoint updated timespan.schema.enum to support additional values: M15, M30, M60, M120, M240, D, W, M, Y.	Historical Bars

2026-06-06

Trading API: Get Stock Instrument response now returns four additional margin fields.

Changed

Category	API	Change	Link
API	Trading API	Get Stock Instrument response now returns four additional margin fields: intraday_margin_long — Intraday margin requirement ratio for long position intraday_margin_short — Intraday margin requirement ratio for short position maintenance_margin_long — Maintenance margin requirement ratio for long position maintenance_margin_short — Maintenance margin requirement ratio for short position	Get Stock Instrument