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How to run a command

One line in Twitch chat and it happens in the world, live. Here is how — and how to read the answer when it does not.

Minecraft’s own commands, in chat

If you have played Minecraft you already know these — they are the same commands you would type in the game. Only the first character changes: # here, where the game uses a slash. All of them are free to anyone watching.

#summon cow ~ ~ ~

A cow 🐮 drops into the world, live on stream.

Your message has to start with # — put a word or a space in front of it and nothing happens at all: no reply, no error.

Get it wrong and chat tells you which part. Fix that bit, send it again:

voxelvic #weather raain

voxelvic: wrong syntax: "raain" is not one of [clear rain thunder] here

voxelvic #weather rain

Rain starts falling over everyone’s build. 🌧

Not every command is open and not every value is. Positions are bounded, whether they are measured from the streamer or from the world, and the lists of blocks, mobs and effects are picked rather than complete.

Somebody is going to try to break it anyway. Go on then 😉. That is expected, and mostly it is the point — the chaos is the show. But one viewer can flatten a world faster than everyone else can build it, and a single number in the wrong command takes the server down for the rest of the stream. The limits are the difference between chaos and a black screen.

See every command and what it takes

Support the stream

Every command is free, for everyone, and a tip does not change that: it buys nothing and unlocks nothing.

If you enjoy the stream and want to help cover what it costs to run, you can still send one — and get a thank-you for it.

Open the tip page

If it does not run

Chat answers you and names the part that was wrong — the block that is not on the list, the coordinate outside the play area, the word that did not fit there. Read the reply first; it is usually the whole answer.

A value that looks right and is still refused may be deliberately off the table rather than mistyped. The command’s own page lists what it takes.
Told to wait: most commands have a pause after each run, and the whole chat shares it — someone else’s command can be why yours has to wait.
Told that commands are paused or that one is switched off: that is the streamer, not you. The command’s own page says which.
No answer at all usually means the message never counted as a command — something was in front of the # — or that chat had already answered you moments ago. It answers each person now and then rather than once per message.