Change Logs
2026-08-29
Trading API: Added single-leg option order support for US Market.
New
| Category | API | Change | Link |
|---|---|---|---|
| API | Trading API | Added single-leg option order capability to the Place Order endpoint. Users can now submit single-leg option orders (Buy/Sell) through the existing order placement interface. | Order Place |
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. |
2026-08-14
Subscribe Trade Events documentation update.
Changed
| Category | API | Change | Link |
|---|---|---|---|
| API | Trading API | Subscribe Trade Events: MODIFY_SUCCESS example order_status value changed from WORKING to SUBMITTED. | Subscribe Trade Events |
2026-06-27
Market Data API: Added Screener, Watchlist, and Fundamentals modules.
New
| Category | API | Change | Link |
|---|---|---|---|
| API | Market Data API | Added Screener category with 2 endpoints: Stock Top Gainers/Losers Rank, Top Active | Screener |
| API | Market Data API | Added Watchlist category with 8 endpoints: Get Watchlist, Create Watchlist, Update Watchlist, Delete Watchlist, Get Watchlist Instruments, Add Instruments to Watchlist, Remove Instruments from Watchlist, Update Instruments Sort Order | Watchlist |
| API | Market Data API | Added Fundamentals category with 3 endpoints: Company Profile, Analyst Target Price, Analyst Rating | Fundamentals |
2026-06-20
Add new document In the AI Friendly Resources.
Add
| Category | API | Change | Link |
|---|---|---|---|
| Docs | — | Add the documents "Webull MCP Server" in the "AI Friendly Resources" module. | Webull MCP Server |
| Docs | — | Add the documents "Webull Agent Skills" in the "AI Friendly Resources" module. | Webull Agent Skills |
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 |