Portal crafting

NeoForge 26.1.2 and 1.21.1.

An item thrown through a portal (Nether, End, End gateway, or a modded portal that teleports the usual way) that matches a recipe changes in place instead of travelling, and is pushed back out.

File: data/<ns>/recipe/<name>.json

{
  "type": "fundamentum:portal_crafting",
  "ingredient": "mymod:ender_whip",
  "result": {"id": "mymod:end_rift_whip", "count": 1},
  "portal": "minecraft:end_portal",
  "dimension": "minecraft:the_end",
  "keep_components": true
}

Field	Default	Meaning
ingredient	required	a normal recipe ingredient
result	required	an item stack
portal	any	a block, a list of blocks or a #tag
dimension	any	where the portal leads
keep_components	false	keep the thrown item's enchantments, damage and name

A stack makes count x n results, in full stacks. With Architect's Palette installed, items its warping recipes take are left to it. JEI, if installed, shows a Portal Crafting category.