API Update: Introducing the ‘strategy’ Field to the Position Endpoint

Coming Soon: Changes to Minimum Price Increments, Lot Size, Base Initial Margin, Maintenance Margin, Risk Limits and Risk Steps

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At BitMEX, we are committed to constantly improving our platform and infrastructure to support the advanced trading capabilities of our users. As part of this ongoing effort, we’re announcing an update to our REST and WebSocket APIs.

Starting October 14, 2025, a new field, Strategy, will be added to the BitMEX position table/endpoint.

Actual date and time: 14 October 2025 between 06:00 – 09:00 UTC

What changes?

new field, strategywill be added to the responsive position table (available via /position REST API and WebSocket API endpoint).

For all existing positions, this field will be filled in with the default value: One Way.

Please refer to the example snippet for placement in the REST API or WebSocket API below:

“account”: 1234567,

“code”: “XBTUSDT”,

“strategy”: “One Way”,

Why are we making this change?

Add the strategy The field is a necessary preparatory step for upcoming features.

This is an incremental change, meaning it introduces a new field without removing any existing data. Most integrations should not be affected.

If you have any questions about these upcoming changes, please get in touch supports.

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