For AI agents: a documentation index is available at the root level at /llms.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
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IntroductionAccount ManagementTradingAPI ReferenceWeb API v1.0 DocumentationFlex Web ServiceChangelog
IntroductionAccount ManagementTradingAPI ReferenceWeb API v1.0 DocumentationFlex Web ServiceChangelog
IBKR HomeIBKR CampusLog InOpen Account

Changelog

March 28, 2025
March 28, 2025

IBKR APIs | IBKR WebAPI | Web API Reference

Beginning May 1st, all requests to Place an Order, Cancel an Order, or Modify an Order for US Futures Orders must include the manualIndicator field.

The Manual Indicator field is used to determine if an order was manual entered or done through an automated tool.

This field is required in order to remain in compliance with CME Group Rule 536-B.

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