Commands & Data guides

The profile component holds base64 of {textures:{SKIN:{url:…}}}. That is why a head's look is fixed at the moment it was made, and why the database can be tens of thousands of entries.

Letters, digits, underscore. No hyphens, no dots, no spaces. And a UUID is accepted with or without its dashes — which is why one lookup fails and the identical one works.

One condition is the object itself. Two or more get wrapped in all_of or any_of. Plus the eight condition types, and why inverting is a wrapper rather than a flag.

Three keys hold an entire build: size, palette and blocks. Each block is an integer pointing into the palette, so a 32³ volume of stone costs one string and 32,768 numbers.

Adventure holds 47 of the 126 and the End just 9. 70 are dead ends, the longest chain is 8 deep, and the Story tab is the only one with zero challenge frames.

26.2 ships 51 damage types. 19 bypass armour, 30 bypass shields, and the overlap is not what people assume — every type that beats armour also beats a shield.

26.2 ships 43 enchantments. 25 conflict with nothing at all, level 3 is the most common cap, and Curse of Vanishing applies to more items than any other enchantment.

Truncating division puts block −1 in chunk 0 instead of −1, and a plain % gives an in-chunk offset of −1 instead of 15. Both are off, and both look right until you go west of spawn.

21 status effects have no potion at all. Swiftness gives Speed, Leaping gives Jump Boost, Healing gives Instant Health — and /give and /effect need the different names.

26.2 ships 21 recipe types, and crafting is not as dominant as it feels. On the tag side, mineable/pickaxe alone covers 417 blocks and no vanilla tag uses replace.