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The Has Key? action checks whether a property path exists in an object. It returns true even when the property’s value is null, false, or empty text.

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Inputs

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Outputs

Dot and bracket paths are supported. Given:
Both customer.addresses and customer.addresses[0].city return true.
This checks existence, not whether the value is useful or non-empty. A key whose value is undefined can still be treated differently by later actions.