diff --git a/content/actions/reference/workflows-and-actions/workflow-syntax.md b/content/actions/reference/workflows-and-actions/workflow-syntax.md
index 0953709ba987..80404b47aa77 100644
--- a/content/actions/reference/workflows-and-actions/workflow-syntax.md
+++ b/content/actions/reference/workflows-and-actions/workflow-syntax.md
@@ -227,6 +227,18 @@ jobs:
 
 For more information, see [AUTOTITLE](/actions/how-tos/reuse-automations/reuse-workflows).
 
+## `on.workflow_call.inputs.<input_id>.description`
+
+A string description of the input parameter.
+
+## `on.workflow_call.inputs.<input_id>.required`
+
+A boolean specifying whether the input must be supplied by the caller workflow.
+
+## `on.workflow_call.inputs.<input_id>.default`
+
+The default value of the input parameter if none is supplied by the caller workflow.
+
 ## `on.workflow_call.inputs.<input_id>.type`
 
 Required if input is defined for the `on.workflow_call` keyword. The value of this parameter is a string specifying the data type of the input. This must be one of: `boolean`, `number`, or `string`.