diff --git a/config/schema/recaptcha_v3.schema.yml b/config/schema/recaptcha_v3.schema.yml
index 0e328fb..dd509d3 100644
--- a/config/schema/recaptcha_v3.schema.yml
+++ b/config/schema/recaptcha_v3.schema.yml
@@ -28,5 +28,12 @@ recaptcha_v3.recaptcha_v3_action.*:
     label:
       type: label
       label: 'Label'
+    threshold:
+      type: float
+      label: 'Threshold'
+    challenge:
+      type: string
+      label: 'Challenge'
     uuid:
       type: string
+
diff --git a/tests/src/Functional/ReCaptchaActionListBuilderTest.php b/tests/src/Functional/ReCaptchaActionListBuilderTest.php
new file mode 100644
index 0000000..f1248f7
--- /dev/null
+++ b/tests/src/Functional/ReCaptchaActionListBuilderTest.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace Drupal\Tests\recaptcha_v3\Functional;
+
+use Drupal\Core\Url;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Class ReCaptchaActionListBuilderTest.
+ *
+ * @package Drupal\Tests\recaptcha_v3\Functional
+ *
+ * @group recaptcha_v3
+ */
+class ReCaptchaActionListBuilderTest extends BrowserTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  protected static $modules = [
+    'captcha',
+    'recaptcha',
+    'recaptcha_v3',
+  ];
+
+  /**
+   * Test case for the recaptcha action list builder.
+   */
+  public function testListBuilder() {
+    $add_form = Url::fromRoute('entity.recaptcha_v3_action.add_form');
+    $collection = Url::fromRoute('entity.recaptcha_v3_action.collection');
+
+    $assert = $this->assertSession();
+
+    // Ensure anonymous access is denied to the add form.
+    $this->drupalGet($add_form);
+    $assert->statusCodeEquals(403);
+
+    // Ensure anonymous access is denied to the collection form.
+    $this->drupalGet($collection);
+    $assert->statusCodeEquals(403);
+
+    // Sign in as a captcha administrator.
+    $this->drupalLogIn($this->createUser(['administer CAPTCHA settings']));
+
+    // Add an action.
+    $this->drupalPostForm(
+      $add_form, [
+        'label' => 'Test action',
+        'id' => 'test_action',
+        'threshold' => '.5',
+        'challenge' => 'default',
+      ],
+      'Save');
+
+    // Check that the collection contains the new action.
+    $this->drupalGet($collection);
+    $assert->pageTextContains('Test action');
+    $assert->pageTextContains('test_action');
+    $assert->pageTextContains('.5');
+    $assert->pageTextContains('Default');
+  }
+
+}
+