This is the Csp formfield/date template. It should be called in the following format:

{{Csp formfield/date
|name= (text) 
|required= (optional: "required")
|value= (date with format yyyy-mm-dd) e.g. "2023-04-15"
}}

Example

Related templates:

Page
Template:Csp formfield/ask token
Template:Csp formfield/checkbox
Template:Csp formfield/date
Template:Csp formfield/datetime-local
Template:Csp formfield/number
Template:Csp formfield/select
Template:Csp formfield/text
Template:Csp formfield/textarea
Template:Csp formfield/token