diff --git a/homeassistant/components/frontend/__init__.py b/homeassistant/components/frontend/__init__.py
index 1971a9b7f1f5..c9d59ee46c81 100644
--- a/homeassistant/components/frontend/__init__.py
+++ b/homeassistant/components/frontend/__init__.py
@@ -558,19 +558,26 @@ 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",
+    # Developer tools moved to config in 2026.2 and was renamed to
+    # "Tools" (/config/tools) in 2026.8. Redirect both the original
+    # top-level URLs and the 2026.2 config URLs to the new location.
+    for suffix in (
+        "",
+        "/yaml",
+        "/state",
+        "/action",
+        "/template",
+        "/event",
+        "/statistics",
+        "/assist",
+        "/debug",
     ):
-        hass.http.register_redirect(url, f"/config{url}")
+        hass.http.register_redirect(
+            f"/developer-tools{suffix}", f"/config/tools{suffix}"
+        )
+        hass.http.register_redirect(
+            f"/config/developer-tools{suffix}", f"/config/tools{suffix}"
+        )
 
     hass.http.app.router.register_resource(IndexView(repo_path, hass))
 
diff --git a/homeassistant/components/mqtt/strings.json b/homeassistant/components/mqtt/strings.json
index 530b81eab9da..79000ba6e566 100644
--- a/homeassistant/components/mqtt/strings.json
+++ b/homeassistant/components/mqtt/strings.json
@@ -1137,7 +1137,7 @@
   },
   "issues": {
     "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](/config/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/tools/yaml) the manually configured MQTT items or restart Home Assistant to fix this issue.",
       "title": "Invalid config found for MQTT {domain} item"
     },
     "protocol_5_migration": {
diff --git a/tests/components/frontend/test_init.py b/tests/components/frontend/test_init.py
index ebe0489424ff..69ad5e048bf1 100644
--- a/tests/components/frontend/test_init.py
+++ b/tests/components/frontend/test_init.py
@@ -958,13 +958,24 @@ async def test_get_version(
     ("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),
+        ("/developer-tools", "/config/tools", 301),
+        ("/developer-tools/yaml", "/config/tools/yaml", 301),
+        ("/developer-tools/state", "/config/tools/state", 301),
+        ("/developer-tools/action", "/config/tools/action", 301),
+        ("/developer-tools/template", "/config/tools/template", 301),
+        ("/developer-tools/event", "/config/tools/event", 301),
+        ("/developer-tools/statistics", "/config/tools/statistics", 301),
+        ("/developer-tools/assist", "/config/tools/assist", 301),
+        ("/developer-tools/debug", "/config/tools/debug", 301),
+        ("/config/developer-tools", "/config/tools", 301),
+        ("/config/developer-tools/yaml", "/config/tools/yaml", 301),
+        ("/config/developer-tools/state", "/config/tools/state", 301),
+        ("/config/developer-tools/action", "/config/tools/action", 301),
+        ("/config/developer-tools/template", "/config/tools/template", 301),
+        ("/config/developer-tools/event", "/config/tools/event", 301),
+        ("/config/developer-tools/statistics", "/config/tools/statistics", 301),
+        ("/config/developer-tools/assist", "/config/tools/assist", 301),
+        ("/config/developer-tools/debug", "/config/tools/debug", 301),
         ("/shopping-list", "/todo", 301),
     ],
 )