diff --git a/components/alibi-explain-server/alibiexplainer/server.py b/components/alibi-explain-server/alibiexplainer/server.py
index 2075ba13e3..da1adf8e66 100644
--- a/components/alibi-explain-server/alibiexplainer/server.py
+++ b/components/alibi-explain-server/alibiexplainer/server.py
@@ -46,7 +46,7 @@ def __init__(
     def create_application(self):
         return tornado.web.Application(
             [
-                (r"/v1/models/([a-zA-Z0-9_-]+):explain",
+                (r"/v1/models/([a-zA-Z0-9_-]*):explain",
                  ExplainV2Handler, dict(model=self.registered_model)),
                 (r"/api/v0.1/explain",
                  ExplainHandler, dict(model=self.registered_model)),
@@ -112,4 +112,3 @@ def post(self, model_name):
             )
         response =self.model.explain(body, model_name=model_name)
         self.write(response)
-
diff --git a/doc/source/analytics/explainers.md b/doc/source/analytics/explainers.md
index 2443ddd790..03ecbdf2d1 100644
--- a/doc/source/analytics/explainers.md
+++ b/doc/source/analytics/explainers.md
@@ -86,3 +86,4 @@ The explain method is also supported for tensorflow and v2 kfserving protocols.
 | kfserving | `http://<host>/<ingress-path>/v2/models/<model-name>/explain` |
 
 
+Note: for `tensorflow` protocol we support similar non-standard extension as for the [prediction API](../graph/protocols.md#rest-and-grpc-tensorflow-protocol), `http://<host>/<ingress-path>/v1/models/:explain`.
diff --git a/notebooks/explainer_examples.ipynb b/notebooks/explainer_examples.ipynb
index b54a90c6ba..4bd48438bf 100644
--- a/notebooks/explainer_examples.ipynb
+++ b/notebooks/explainer_examples.ipynb
@@ -581,6 +581,27 @@
     "plt.imshow(arr)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# or using non-standard seldon extension\n",
+    "\n",
+    "test_example = X_test[idx : idx + 1].tolist()\n",
+    "payload = '{\"instances\":' + f\"{test_example}\" + \" }\"\n",
+    "cmd = f\"\"\"curl -s -d '{payload}' \\\n",
+    "   http://localhost:8003/seldon/seldon/cifar10-classifier-explainer/default/v1/models/:explain \\\n",
+    "   -H \"Content-Type: application/json\"\n",
+    "\"\"\"\n",
+    "ret = Popen(cmd, shell=True, stdout=PIPE)\n",
+    "raw = ret.stdout.read().decode(\"utf-8\")\n",
+    "explanation = json.loads(raw)\n",
+    "arr = np.array(explanation[\"data\"][\"anchor\"])\n",
+    "plt.imshow(arr)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -1758,7 +1779,7 @@
  "metadata": {
   "anaconda-cloud": {},
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },