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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API Documentation API Reference Protobuf Reference Changelog

API Documentation API Reference Protobuf Reference Changelog

- Introduction
Important Protobuf Functions
- Introduction
- CopyFrom

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HistoricalData

HistoricalData

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HistoricalData

Field	Type	Description
`reqId`	`int32`	Unique request identifier used for tracking across EWrapper
`historicalDataBars`	`HistoricalDataBar`	An array of HistoricalDataBar objects.

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HistogramDataRequest

HistoricalDataBar