temporalio / temporalio/temporal
Add SignalWithStart\UpdateWithStart command
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@spkane31 is already working on this.
Since Jun 19, 2026.
API
difficulty: easy
enhancement
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Description
Is your feature request related to a problem? Please describe.
Currently, SignalWithStart is available only through external gRPC API. There are multiple use cases when it is needed from a workflow.
Describe the solution you'd like
Add SignalWithStartChildWorkflow decision. This would allow calling SignalWithStart from the workflow code.
Add an option to specify if the started workflow becomes a child workflow.
Describe alternatives you've considered
Do not implement and keep using the current workaround of calling it from an activity.
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