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
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Changelog

February 10, 2026
February 10, 2026

IBKR APIs | IBKR WebAPI | Web API Reference

Advisors may now submit in-line allocation orders in place of modifying an allocation group in /iserver/account/allocation/group then placing orders through the jsonPayload field in an order body.


February 10, 2026
February 10, 2026

IBKR APIs | IBKR WebAPI | Web API Reference

The source parameter has been added for the /iserver/marketdata/history endpoint, allowing users to declare the type of historical data to retrieve through the endpoint.

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