What a credit buys
These are the only four things that cost anything, and the price never changes.
A creation
What gets built with volume out of a sentence.
10 credits
A mural
An image turned into blocks, on a wall or on the ground.
2 credits
A painting
An image inside a painting on your wall. Moving it is free.
2 credits
A world
A whole map from one sentence: terrain or floating islands, at the size you choose.
5 credits
How they are spent
The price comes first
You see what it costs and how many credits you have left before spending one. You never find out the price after paying it.
If it fails before the preview, it comes back
If a summon fails before showing you the preview, the credits return to your account on their own. Once the preview is ready, they are spent.
Discarding doesn't refund
Credits are spent when you summon, which is when the work happens, not when the blocks land. If the preview doesn't convince you, asking again is a new summon.
Out of credits loses nothing
The mod stays installed and your world stays as it is. When you have credits again, it picks up exactly where it was.