First attempt with a custom card returns "Required key 'entities.0.entity' is missing"

hi… how much experience do you have in home assistant? don’t want to insult you if you’re experienced… but at the same time, maybe you’re totally new?

reason i ask is that the code you posted isn’t close to working unless there’s some magic i don’t know about (which wouldn’t be the first time). so my answer to “what am i doing wrong” is pretty much “it’s all wrong”. but if there was something that led you to that, could you point me to it? either i’ll learn something from it and maybe can figure out what was intended, or there’s some doc or something that needs to get corrected…

to point you in the right direction…

  1. here’s how you post code here:
    How to format your code in forum posts

  2. auto-entities may be what you want:
    🔹 Auto-entities - Automatically fill cards with entities