{
  "properties": {
    "displayName": "Ensure API app has 'Client Certificates (Incoming client certificates)' set to 'On'",
    "policyType": "BuiltIn",
    "mode": "Indexed",
    "description": "Client certificates allow for the app to request a certificate for incoming requests. Only clients that have a valid certificate will be able to reach the app.",
    "metadata": {
      "version": "1.0.0",
      "category": "App Service"
    },
    "parameters": {
      "effect": {
        "type": "string",
        "defaultValue": "Audit",
        "allowedValues": [
          "Audit",
          "Disabled"
        ],
        "metadata": {
          "displayName": "Effect",
          "description": "Enable or disable the execution of the policy"
        }
      }
    },
    "policyRule": {
      "if": {
        "allOf": [
          {
            "field": "type",
            "equals": "Microsoft.Web/sites"
          },
          {
            "field": "kind",
            "like": "*api"
          },
          {
            "field": "Microsoft.Web/sites/clientCertEnabled",
            "equals": "false"
          }
        ]
      },
      "then": {
        "effect": "[parameters('effect')]"
      }
    }
  },
  "id": "/providers/Microsoft.Authorization/policyDefinitions/0c192fe8-9cbb-4516-85b3-0ade8bd03886",
  "name": "0c192fe8-9cbb-4516-85b3-0ade8bd03886"
}