diff --git a/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/implementation/FunctionDeploymentSlotImpl.java b/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/implementation/FunctionDeploymentSlotImpl.java
index c137bb4c49432..8e4be1444653e 100644
--- a/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/implementation/FunctionDeploymentSlotImpl.java
+++ b/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/implementation/FunctionDeploymentSlotImpl.java
@@ -3,6 +3,7 @@
 
 package com.azure.resourcemanager.appservice.implementation;
 
+import com.azure.resourcemanager.appservice.fluent.models.HostKeysInner;
 import com.azure.resourcemanager.appservice.fluent.models.SitePatchResourceInner;
 import com.azure.resourcemanager.appservice.models.DeploymentSlotBase;
 import com.azure.resourcemanager.appservice.models.FunctionApp;
@@ -80,4 +81,15 @@ Mono<SiteInner> submitSite(final SitePatchResourceInner siteUpdate) {
         // PATCH does not work for function app slot
         return submitSiteWithoutSiteConfig(this.innerModel());
     }
+
+    @Override
+    public String getMasterKey() {
+        return this.getMasterKeyAsync().block();
+    }
+
+    @Override
+    public Mono<String> getMasterKeyAsync() {
+        return this.manager().serviceClient().getWebApps().listHostKeysSlotAsync(
+            this.resourceGroupName(), this.parent().name(), this.name()).map(HostKeysInner::masterKey);
+    }
 }
diff --git a/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/models/FunctionDeploymentSlot.java b/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/models/FunctionDeploymentSlot.java
index 1bc09a05c1ef8..1ab5ff15abb4b 100644
--- a/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/models/FunctionDeploymentSlot.java
+++ b/sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/models/FunctionDeploymentSlot.java
@@ -10,6 +10,7 @@
 import com.azure.resourcemanager.resources.fluentcore.arm.models.IndependentChildResource;
 import com.azure.resourcemanager.resources.fluentcore.model.Creatable;
 import com.azure.resourcemanager.resources.fluentcore.model.Updatable;
+import reactor.core.publisher.Mono;
 
 /** An immutable client-side representation of an Azure Function App deployment slot. */
 @Fluent
@@ -20,6 +21,12 @@ public interface FunctionDeploymentSlot
         Updatable<DeploymentSlotBase.Update<FunctionDeploymentSlot>>,
         HasParent<FunctionApp> {
 
+    /** @return the master key for the function app */
+    String getMasterKey();
+
+    /** @return the master key for the function app */
+    Mono<String> getMasterKeyAsync();
+
     /**************************************************************
      * Fluent interfaces to provision a function deployment slot
      **************************************************************/