I am trying to make a SCP-035 mask in Minecraft with command blocks. (since I think it would be fun and people only make NPCs)

I am trying to make the part where it checks when you put it on and then runs the rest of the commands and stuff.

I have tried copy pasting commands into my command blocks but they don't work either. I have tried looking online to see if anyone has has done an actual mask but no.

Here is my current command:

execute if entity @a[nbt={Inventory:[{Slot:103b,id:"minecraft:skeleton_skull",Count:1b,tag:{display:{Name:"{\"text\":\"SCP-035\"}"}}}]}]

PS: (This is a repeating, unconditional, always active command block)

Any help would be appreciated!

  • 1
    Where is your run part of the execute command? How do you know that it isn't working if it there isn't a response setted up? Also, what error are you getting, in case you do have a run part? The run part never triggers?
    – BunnyMerz
    Dec 22, 2021 at 0:38
  • It is running into a comparator, I also tried using run say hi
    – Spooky
    Dec 22, 2021 at 2:01
  • No errors by the way.
    – Spooky
    Dec 22, 2021 at 3:00
  • 2
    Possible duplicate of Why is it bad practice to test for item names?
    – pppery
    Sep 19, 2022 at 15:38

1 Answer 1


The source of problem originates probably from the name of your mask given to yourself and the name criteria written in the nbt check. There may exists discrepancies between these two which makes the tag unsuitable for nbt checks.

What I would recommend for you to do is to use the {CustomModelData:int} tag.

execute as @a[nbt={Inventory:[{Slot:103b,tag:{CustomModelData:int}}]}] at @s run yourfunction

Like so.

give @s skeleton_skull{CustomModelData:int} 1

Give yourself the corresponding skull.

This is bound to be correct since the tag is simply an integer, which provides added efficiency to your functions. Additionally, it is much easier for you to synchronize your functions with resource packs shall the need arise.

By the way, I am curious about what you would add into the game for the possession mask, for I am a fan of the SCP-verse as well.

Edit: Another suggestion - create a datapack for your project and bolster your efficiency exponentially

  • Nice! I will check if your answer works! Also, I am thinking it would like give you blindness and wither then when you die it would summon a npc (like in the videos) at your location.
    – Spooky
    Dec 23, 2021 at 9:14
  • Is the int an integer or is that the actual value?
    – Spooky
    Dec 24, 2021 at 5:13
  • int=any integer
    – hfanatic
    Dec 24, 2021 at 5:56

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