From a978e3c1992d0c36031570f8b2edb01bc261fa8e Mon Sep 17 00:00:00 2001
From: Bram Kragten <mail@bramkragten.nl>
Date: Wed, 28 Jan 2026 17:55:30 +0100
Subject: [PATCH] Remove developer tools panel, add redirects (#161789)

Co-authored-by: Robert Resch <robert@resch.dev>
---
 homeassistant/components/frontend/__init__.py | 22 ++++++++++------
 homeassistant/components/mqtt/strings.json    |  2 +-
 tests/components/frontend/test_init.py        | 26 ++++++++++++++-----
 3 files changed, 35 insertions(+), 15 deletions(-)

diff --git a/homeassistant/components/frontend/__init__.py b/homeassistant/components/frontend/__init__.py
index 77e7bdbff4e..039445132ca 100644
--- a/homeassistant/components/frontend/__init__.py
+++ b/homeassistant/components/frontend/__init__.py
@@ -462,6 +462,20 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     # Shopping list panel was replaced by todo panel in 2023.11
     hass.http.register_redirect("/shopping-list", "/todo")
 
+    # Developer tools moved to config panel in 2026.2
+    for url in (
+        "/developer-tools",
+        "/developer-tools/yaml",
+        "/developer-tools/state",
+        "/developer-tools/action",
+        "/developer-tools/template",
+        "/developer-tools/event",
+        "/developer-tools/statistics",
+        "/developer-tools/assist",
+        "/developer-tools/debug",
+    ):
+        hass.http.register_redirect(url, f"/config{url}")
+
     hass.http.app.router.register_resource(IndexView(repo_path, hass))
 
     async_register_built_in_panel(
@@ -495,14 +509,6 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
 
     async_register_built_in_panel(hass, "profile")
 
-    async_register_built_in_panel(
-        hass,
-        "developer-tools",
-        require_admin=True,
-        sidebar_title="developer_tools",
-        sidebar_icon="mdi:hammer",
-    )
-
     @callback
     def async_change_listener(
         resource_type: str,
diff --git a/homeassistant/components/mqtt/strings.json b/homeassistant/components/mqtt/strings.json
index ebcb77222e9..9fb181d5bc6 100644
--- a/homeassistant/components/mqtt/strings.json
+++ b/homeassistant/components/mqtt/strings.json
@@ -1121,7 +1121,7 @@
       "title": "Deprecated option object_id used"
     },
     "invalid_platform_config": {
-      "description": "Home Assistant detected an invalid config for a manually configured item.\n\nPlatform domain: **{domain}**\nConfiguration file: **{config_file}**\nNear line: **{line}**\nConfiguration found:\n```yaml\n{config}\n```\nError: **{error}**.\n\nMake sure the configuration is valid and [reload](/developer-tools/yaml) the manually configured MQTT items or restart Home Assistant to fix this issue.",
+      "description": "Home Assistant detected an invalid config for a manually configured item.\n\nPlatform domain: **{domain}**\nConfiguration file: **{config_file}**\nNear line: **{line}**\nConfiguration found:\n```yaml\n{config}\n```\nError: **{error}**.\n\nMake sure the configuration is valid and [reload](/config/developer-tools/yaml) the manually configured MQTT items or restart Home Assistant to fix this issue.",
       "title": "Invalid config found for MQTT {domain} item"
     },
     "subentry_migration_discovery": {
diff --git a/tests/components/frontend/test_init.py b/tests/components/frontend/test_init.py
index ba6a3042279..4dda28c175f 100644
--- a/tests/components/frontend/test_init.py
+++ b/tests/components/frontend/test_init.py
@@ -937,13 +937,27 @@ async def test_get_version(
     assert msg["result"] == {"version": cur_version}
 
 
-async def test_static_paths(mock_http_client: TestClient) -> None:
+@pytest.mark.parametrize(
+    ("from_url", "to_url", "expected_status"),
+    [
+        ("/.well-known/change-password", "/profile", 302),
+        ("/developer-tools", "/config/developer-tools", 301),
+        ("/developer-tools/yaml", "/config/developer-tools/yaml", 301),
+        ("/developer-tools/state", "/config/developer-tools/state", 301),
+        ("/developer-tools/action", "/config/developer-tools/action", 301),
+        ("/developer-tools/template", "/config/developer-tools/template", 301),
+        ("/developer-tools/event", "/config/developer-tools/event", 301),
+        ("/developer-tools/debug", "/config/developer-tools/debug", 301),
+        ("/shopping-list", "/todo", 301),
+    ],
+)
+async def test_static_paths(
+    mock_http_client: TestClient, from_url: str, to_url: str, expected_status: int
+) -> None:
     """Test static paths."""
-    resp = await mock_http_client.get(
-        "/.well-known/change-password", allow_redirects=False
-    )
-    assert resp.status == 302
-    assert resp.headers["location"] == "/profile"
+    resp = await mock_http_client.get(from_url, allow_redirects=False)
+    assert resp.status == expected_status
+    assert resp.headers["location"] == to_url
 
 
 @pytest.mark.usefixtures("frontend_themes")