Registry list

Status: Partly implemented. Blocks and items register in code (vanilla-backed); the data-pack registries take entries from the mod’s datapack/ folder. Every other code registry is Planned.

How: code = registered in lifecycle.register; data = JSON in datapack/<ns>/<folder>/. Vanilla clients: whether a vanilla client sees mod entries without help.

Code registries

Registry	How	Status	Vanilla clients
minecraft:block	code: cl_block_register / cl.blocks.register	Implemented (vanilla-backed, one state)	see the base block
minecraft:item	code: cl_item_register / cl.items.register	Implemented (vanilla-backed)	see the base item with the mod’s name; the model with the resource pack
minecraft:entity_type, block_entity_type, fluid, menu, particle_type, mob_effect, potion, attribute, data_component_type, creative_mode_tab, recipe_type, recipe_serializer, game_event, custom_stat, point_of_interest_type, villager_profession, command_argument_type, loot function and condition types, enchantment effect component types	code	planned	via fallbacks (planned)
minecraft:sound_event	data: assets/<ns>/sounds.json	Implemented through the resource pack	play with the mod’s resource pack
Worldgen types: feature, structure_type, structure_piece, placement_modifier_type, density_function_type, biome_source, chunk_generator, carver	code	planned	server-side only

Data-pack registries

Registry	Folder in datapack/<ns>/	Vanilla clients
minecraft:damage_type	damage_type/	✔
minecraft:enchantment	enchantment/	✔
minecraft:enchantment_provider	enchantment_provider/	✔
minecraft:painting_variant	painting_variant/	✔ (the texture needs the resource pack)
minecraft:jukebox_song	jukebox_song/	✔
minecraft:banner_pattern	banner_pattern/	✔ (texture via pack)
minecraft:trim_material, trim_pattern	trim_material/, trim_pattern/	✔
minecraft:wolf_variant, cat_variant, pig_variant, cow_variant, chicken_variant, frog_variant, wolf_sound_variant	matching folders	✔
minecraft:chat_type, instrument, trial_spawner, dialog	matching folders	✔
Recipes, loot tables, tags, advancements, predicates, item modifiers, functions	recipe/, loot_table/, tags/, …	✔ (server-side data)
Worldgen (worldgen/...), dimension_type/, dimension/	matching folders	read for the three vanilla dimensions; extra dimensions aren’t generated yet
clight:biome_modifier	clight/biome_modifier/	planned

Convention tags (c: namespace)

Celestial doesn’t ship c: tags, but the convention from other platforms works the same way: mods that share materials can add them to tags such as c:gems/ruby, c:ingots/<material> or c:ores/<material> in their data pack, and refer to those tags in their own data.