integration

HACS is the app store Home Assistant never shipped with. Home Assistant is the open source brain a lot of people run their smart homes on, and the official integrations only cover so much. HACS gives you a UI to find, install, and update the thousands of community-built add-ons that fill the gaps. Free, MIT licensed, community run.

Without it, installing a custom component means copying files into the right folder by hand and remembering to do it again every time there's an update. HACS turns that into a few clicks: browse, install, update, remove, with links straight to each project's repo and issue tracker. It's the difference between maintaining a smart home and fighting one.

Run Home Assistant and ever wanted a device or dashboard it didn't support out of the box? This is the first thing to install after Home Assistant itself. Solo tinkerers and whole households alike, it's free for everyone and no version costs money.

The catch is the same as any unofficial store: you're installing code from strangers. HACS doesn't vet what's in those repos, it just makes them easy to get. Most community components are fine, but you own the trust decision, and an abandoned add-on can break after a Home Assistant core update with nobody on the hook to fix it.