diff --git a/test/integration/test_plugins.py b/test/integration/test_plugins.py
index f8e58c5b116..e1a8699b82c 100644
--- a/test/integration/test_plugins.py
+++ b/test/integration/test_plugins.py
@@ -19,7 +19,9 @@ openai = pytest.importorskip("openai")
 TEST_VISUALIZATION_PLUGINS_DIR = os.path.join(os.path.dirname(__file__), "test_visualization_plugins")
 
 
-class TestAiApi(IntegrationTestCase):
+class TestVisualizationPluginsApi(IntegrationTestCase):
+    """Tests for the visualization plugins API endpoints."""
+
     @classmethod
     def handle_galaxy_config_kwds(cls, config) -> None:
         config["ai_api_key"] = "ai_api_key"
@@ -27,6 +29,62 @@ class TestAiApi(IntegrationTestCase):
         config["ai_model"] = "ai_model"
         config["visualization_plugins_directory"] = TEST_VISUALIZATION_PLUGINS_DIR
 
+    def test_index(self):
+        """Test that GET /api/plugins returns a list of plugins."""
+        response = self._get("plugins")
+        self._assert_status_code_is(response, 200)
+        plugins = response.json()
+        assert isinstance(plugins, list)
+
+    def test_show_returns_all_fields(self):
+        """Test that GET /api/plugins/{id} returns all expected fields including params, tags, tests, help, data_sources."""
+        response = self._get("plugins/jupyterlite")
+        self._assert_status_code_is(response, 200)
+        plugin = response.json()
+
+        # Verify required fields
+        assert plugin["name"] == "jupyterlite"
+        assert plugin["html"] == "JupyterLite Test"
+        assert plugin["description"] == "Test fixture for visualization plugin integration tests"
+        assert plugin["embeddable"] is False
+        assert "entry_point" in plugin
+        assert "href" in plugin
+
+        # Verify params are returned correctly
+        assert "params" in plugin
+        params = plugin["params"]
+        assert "dataset_id" in params
+        assert params["dataset_id"]["required"] is True
+        assert params["dataset_id"]["type"] == "str"
+        assert "limit" in params
+        assert params["limit"]["required"] is False
+        assert params["limit"]["type"] == "int"
+        assert params["limit"]["default"] == "10"
+
+        # Verify data_sources are returned
+        assert "data_sources" in plugin
+        data_sources = plugin["data_sources"]
+        assert len(data_sources) >= 1
+        assert data_sources[0]["model_class"] == "HistoryDatasetAssociation"
+
+        # Verify specs are returned
+        assert "specs" in plugin
+        assert plugin["specs"]["custom_setting"] == "test_value"
+
+        # Verify tags are returned
+        assert "tags" in plugin
+        tags = plugin["tags"]
+        assert "Test" in tags
+        assert "Integration" in tags
+
+        # Verify help is returned
+        assert "help" in plugin
+        assert "test help text" in plugin["help"]
+
+        # Verify tests are returned
+        assert "tests" in plugin
+        assert len(plugin["tests"]) >= 1
+
     def _create_payload(self, extra=None):
         payload = {
             "messages": [{"role": "user", "content": "hi"}],
diff --git a/test/integration/test_visualization_plugins/jupyterlite/static/jupyterlite.xml b/test/integration/test_visualization_plugins/jupyterlite/static/jupyterlite.xml
index e61aac851cd..9874bb700b3 100644
--- a/test/integration/test_visualization_plugins/jupyterlite/static/jupyterlite.xml
+++ b/test/integration/test_visualization_plugins/jupyterlite/static/jupyterlite.xml
@@ -1,13 +1,28 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <visualization name="JupyterLite Test" hidden="true">
-    <description>Test fixture for AI chat integration tests</description>
+    <description>Test fixture for visualization plugin integration tests</description>
     <data_sources>
         <data_source>
             <model_class>HistoryDatasetAssociation</model_class>
         </data_source>
     </data_sources>
+    <params>
+        <param required="true">dataset_id</param>
+        <param type="int" required="false" default="10">limit</param>
+    </params>
     <entry_point entry_point_type="script" src="script.js" />
     <specs>
         <ai_prompt>test prompt</ai_prompt>
+        <custom_setting>test_value</custom_setting>
     </specs>
+    <tags>
+        <tag>Test</tag>
+        <tag>Integration</tag>
+    </tags>
+    <help>This is test help text for the JupyterLite test plugin.</help>
+    <tests>
+        <test>
+            <param name="dataset_id" value="test.tabular" />
+        </test>
+    </tests>
 </visualization>