Hi all, just wondering if anyone can help with this annoying thing that has just happened. Developer Tools went missing from the sidebar and I cant get it back!
I have done a Hard Refresh & Cache Clear,
Made sure Advanced Mode is still enabled.
Logged out and Logged back in.
I have verified that it IS still present in the Quick Bar (i.e. in the UI, press c on my keyboard and typed “Developer Tools”). Its still there!
Forced a reset of the Sidebar.
Checked for `default_config’ in my Configuration.yaml file.
Verified my Administrator Status.
Logged in in an Incognito window.
Yet, its still wont come back.
Getting frustrated by having to press ‘c’ and go through the Quickbar every time I want to go to Developer Tools.
Recent HA Core updates have been reorganizing Settings for consistency.
In the 2026.2.x series, some installations (especially Core and Container) moved tools that used to be in the sidebar into Settings to reduce sidebar clutter.
That’s why:
You still can access Developer Tools
It still works normally
But the sidebar item is no longer shown by default
This particularly affects:
Home Assistant Core installs (not OS)
Users without custom dashboards controlling the sidebar
I write my own yaml code, and I sure do miss the quick shortcut of having Developer Tools on the sidebar in OS 26.2.
So:
Here is a way to put Developer Tools, which will then (after this edit) be called “Tools” back on the sidebar in 26.2. Keep in mind that this can break if further changes are made by the Home Assistant programmers. I make no guarantee that this will work for everyone - or anyone - but it worked for me.
Edit your configuration.yaml file and add the section to it that I’ve listed at the end of this message.
Double check to make sure you did only this exact addition, then save the file and completely restart Home Assistant. If “Tools” doesn’t show up, refresh your browser.
Afterwards, your sidebar should have a “Tools” entry that loads Developer Tools.
Thanks for this, works better than creating a new dashboard which seems to nest sidebars - I have posted the code as text rather than picture, so it can be copied straight in…
panel_custom:
# fix for ha decision to remove dev tools
- name: developer-tools
sidebar_title : Dev tools
sidebar_icon: mdi:tools
js_url: /api/hassio/app/entrypoint
embed_iframe: true