diff --git a/homeassistant/components/zwave_js/__init__.py b/homeassistant/components/zwave_js/__init__.py
index 87f9dad9184..25e886ea1bf 100644
--- a/homeassistant/components/zwave_js/__init__.py
+++ b/homeassistant/components/zwave_js/__init__.py
@@ -16,6 +16,7 @@ from homeassistant.helpers.dispatcher import async_dispatcher_send
 
 from .const import DATA_CLIENT, DATA_UNSUBSCRIBE, DOMAIN, PLATFORMS
 from .discovery import async_discover_values
+from .websocket_api import async_register_api
 
 LOGGER = logging.getLogger(__name__)
 CONNECT_TIMEOUT = 10
@@ -127,6 +128,9 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         DATA_UNSUBSCRIBE: unsubs,
     }
 
+    # Set up websocket API
+    async_register_api(hass)
+
     async def start_platforms() -> None:
         """Start platforms and perform discovery."""
         # wait until all required platforms are ready
diff --git a/homeassistant/components/zwave_js/websocket_api.py b/homeassistant/components/zwave_js/websocket_api.py
new file mode 100644
index 00000000000..532b53695e1
--- /dev/null
+++ b/homeassistant/components/zwave_js/websocket_api.py
@@ -0,0 +1,52 @@
+"""Websocket API for Z-Wave JS."""
+
+import logging
+
+import voluptuous as vol
+
+from homeassistant.components import websocket_api
+from homeassistant.components.websocket_api.connection import ActiveConnection
+from homeassistant.core import HomeAssistant, callback
+
+from .const import DATA_CLIENT, DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+ID = "id"
+ENTRY_ID = "entry_id"
+TYPE = "type"
+
+
+@callback
+def async_register_api(hass: HomeAssistant) -> None:
+    """Register all of our api endpoints."""
+    websocket_api.async_register_command(hass, websocket_network_status)
+
+
+@websocket_api.require_admin
+@websocket_api.websocket_command(
+    {vol.Required(TYPE): "zwave_js/network_status", vol.Required(ENTRY_ID): str}
+)
+@callback
+def websocket_network_status(
+    hass: HomeAssistant, connection: ActiveConnection, msg: dict
+) -> None:
+    """Get the status of the Z-Wave JS network."""
+    entry_id = msg[ENTRY_ID]
+    client = hass.data[DOMAIN][entry_id][DATA_CLIENT]
+    data = {
+        "client": {
+            "ws_server_url": client.ws_server_url,
+            "state": client.state,
+            "driver_version": client.version.driver_version,
+            "server_version": client.version.server_version,
+        },
+        "controller": {
+            "home_id": client.driver.controller.data["homeId"],
+            "node_count": len(client.driver.controller.nodes),
+        },
+    }
+    connection.send_result(
+        msg[ID],
+        data,
+    )
diff --git a/tests/components/zwave_js/conftest.py b/tests/components/zwave_js/conftest.py
index 173d9af2728..1d92a73d84d 100644
--- a/tests/components/zwave_js/conftest.py
+++ b/tests/components/zwave_js/conftest.py
@@ -5,6 +5,7 @@ from unittest.mock import DEFAULT, patch
 import pytest
 from zwave_js_server.model.driver import Driver
 from zwave_js_server.model.node import Node
+from zwave_js_server.version import VersionInfo
 
 from homeassistant.helpers.device_registry import (
     async_get_registry as async_get_device_registry,
@@ -25,6 +26,17 @@ def controller_state_fixture():
     return json.loads(load_fixture("zwave_js/controller_state.json"))
 
 
+@pytest.fixture(name="version_state", scope="session")
+def version_state_fixture():
+    """Load the version state fixture data."""
+    return {
+        "type": "version",
+        "driverVersion": "6.0.0-beta.0",
+        "serverVersion": "1.0.0",
+        "homeId": 1234567890,
+    }
+
+
 @pytest.fixture(name="multisensor_6_state", scope="session")
 def multisensor_6_state_fixture():
     """Load the multisensor 6 node state fixture data."""
@@ -50,13 +62,17 @@ def bulb_6_multi_color_state_fixture():
 
 
 @pytest.fixture(name="client")
-def mock_client_fixture(controller_state):
+def mock_client_fixture(controller_state, version_state):
     """Mock a client."""
     with patch(
         "homeassistant.components.zwave_js.ZwaveClient", autospec=True
     ) as client_class:
         driver = Driver(client_class.return_value, controller_state)
+        version = VersionInfo.from_message(version_state)
         client_class.return_value.driver = driver
+        client_class.return_value.version = version
+        client_class.return_value.ws_server_url = "ws://test:3000/zjs"
+        client_class.return_value.state = "connected"
         yield client_class.return_value
 
 
diff --git a/tests/components/zwave_js/test_websocket_api.py b/tests/components/zwave_js/test_websocket_api.py
new file mode 100644
index 00000000000..b5fb97feff1
--- /dev/null
+++ b/tests/components/zwave_js/test_websocket_api.py
@@ -0,0 +1,18 @@
+"""Test the Z-Wave JS Websocket API."""
+
+from homeassistant.components.zwave_js.websocket_api import ENTRY_ID, ID, TYPE
+
+
+async def test_websocket_api(hass, integration, hass_ws_client):
+    """Test the network_status websocket command."""
+    entry = integration
+    ws_client = await hass_ws_client(hass)
+
+    await ws_client.send_json(
+        {ID: 2, TYPE: "zwave_js/network_status", ENTRY_ID: entry.entry_id}
+    )
+    msg = await ws_client.receive_json()
+    result = msg["result"]
+
+    assert result["client"]["ws_server_url"] == "ws://test:3000/zjs"
+    assert result["client"]["server_version"] == "1.0.0"