diff --git a/src/dawn_native/Device.cpp b/src/dawn_native/Device.cpp
index 7e33e3f..e97a4bd 100644
--- a/src/dawn_native/Device.cpp
+++ b/src/dawn_native/Device.cpp
@@ -709,6 +709,14 @@
                                                 WGPUCreateComputePipelineAsyncCallback callback,
                                                 void* userdata) {
         ComputePipelineBase* result = nullptr;
+
+        if (IsToggleEnabled(Toggle::DisallowUnsafeAPIs)) {
+            ConsumedError(
+                DAWN_VALIDATION_ERROR("CreateComputePipelineAsync is disallowed because it isn't "
+                                      "completely implemented yet."));
+            return;
+        }
+
         MaybeError maybeError = CreateComputePipelineInternal(&result, descriptor);
         if (maybeError.IsError()) {
             std::unique_ptr<ErrorData> error = maybeError.AcquireError();
@@ -753,6 +761,14 @@
                                                WGPUCreateRenderPipelineAsyncCallback callback,
                                                void* userdata) {
         RenderPipelineBase* result = nullptr;
+
+        if (IsToggleEnabled(Toggle::DisallowUnsafeAPIs)) {
+            ConsumedError(
+                DAWN_VALIDATION_ERROR("CreateRenderPipelineAsync is disallowed because it isn't "
+                                      "completely implemented yet."));
+            return;
+        }
+
         MaybeError maybeError = CreateRenderPipelineInternal(&result, descriptor);
         if (maybeError.IsError()) {
             std::unique_ptr<ErrorData> error = maybeError.AcquireError();
diff --git a/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp b/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp
index 4ba2194..bb07e48 100644
--- a/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp
+++ b/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp
@@ -211,3 +211,54 @@
         ASSERT_DEVICE_ERROR(encoder.Finish());
     }
 }
+
+// Check that CreateComputePipelineAsync is disallowed as part of unsafe APIs
+TEST_F(UnsafeAPIValidationTest, CreateComputePipelineAsyncDisallowed) {
+    wgpu::ComputePipelineDescriptor desc;
+    desc.computeStage.module = utils::CreateShaderModuleFromWGSL(device, R"(
+        [[stage(compute)]] fn main() -> void {
+        })");
+    desc.computeStage.entryPoint = "main";
+
+    // Control case: CreateComputePipeline is allowed.
+    device.CreateComputePipeline(&desc);
+
+    // Error case: CreateComputePipelineAsync is disallowed.
+    ASSERT_DEVICE_ERROR(device.CreateComputePipelineAsync(
+        &desc,
+        [](WGPUCreatePipelineAsyncStatus status, WGPUComputePipeline returnPipeline,
+           const char* message, void* userdata) {
+            // Status can be Error or Unkown (when using the wire).
+            EXPECT_NE(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);
+        },
+        nullptr));
+}
+
+// Check that CreateRenderPipelineAsync is disallowed as part of unsafe APIs
+TEST_F(UnsafeAPIValidationTest, CreateRenderPipelineAsyncDisallowed) {
+    utils::ComboRenderPipelineDescriptor desc(device);
+    desc.vertexStage.module = utils::CreateShaderModuleFromWGSL(device, R"(
+        [[builtin(position)]] var<out> Position : vec4<f32>;
+        [[stage(vertex)]] fn main() -> void {
+            Position = vec4<f32>(0.0, 0.0, 0.0, 1.0);
+        })");
+    desc.cFragmentStage.module = utils::CreateShaderModuleFromWGSL(device, R"(
+        [[location(0)]] var<out> o_color : vec4<f32>;
+        [[stage(fragment)]] fn main() -> void {
+            o_color = vec4<f32>(0.0, 1.0, 0.0, 1.0);
+        })");
+    desc.cColorStates[0].format = wgpu::TextureFormat::RGBA8Unorm;
+
+    // Control case: CreateRenderPipeline is allowed.
+    device.CreateRenderPipeline(&desc);
+
+    // Error case: CreateRenderPipelineAsync is disallowed.
+    ASSERT_DEVICE_ERROR(device.CreateRenderPipelineAsync(
+        &desc,
+        [](WGPUCreatePipelineAsyncStatus status, WGPURenderPipeline returnPipeline,
+           const char* message, void* userdata) {
+            // Status can be Error or Unkown (when using the wire).
+            EXPECT_NE(WGPUCreatePipelineAsyncStatus::WGPUCreatePipelineAsyncStatus_Success, status);
+        },
+        nullptr));
+}