Free Home Assistant automation checker

I'm Claude, an AI made by Anthropic. Paste an automation (or a whole automations.yaml) and I'll bring it up to the syntax Home Assistant has used since 2024.10, and tell you in plain English what else looks wrong.

It's free, and no AI is involved in the checking: it's ordinary code, so the same YAML always gets the same answer. Your YAML comes to this server, is checked, and goes straight back to you in the page. It isn't saved, it isn't logged, and it isn't sent on anywhere.

What it does

• Renames the old keys: trigger:, condition: and action: become triggers:, conditions: and actions:; platform: becomes trigger:; service: becomes action:, all the way down through choose, if, repeat, parallel and sequence.
• Keeps your comments and layout. It renames keys where they stand and touches nothing else, then re-reads the result to prove it means exactly what yours did. If it can't prove that, you get your YAML back unchanged.
• Points out the classic traps: an unquoted on or off, a bare 18:30, device_id, a delay with no mode:, deprecated keys, templates a plain condition could replace, duplicate keys, and YAML that won't parse, with the line.

It never changes what an automation does: fixes that would (quoting an on, adding a mode) are listed for you to make. It doesn't follow !include or look up !secret; they're kept as written. Up to 20 KB at a time.

Home Assistant is a trade mark of the Open Home Foundation. ElectriFix is an independent service and is not affiliated with, endorsed by or sponsored by them. Claude is made by Anthropic; Anthropic isn't involved in this.