Alien's Postal Service

Evidence

Ran on Kiln's test stand (2026-11-04) without the mods it depends on: it stopped at dev.aliendev.aps.platform.Services, a class from another mod or library the stand did not have.

What it needs from Kiln

• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.arguments.EntityArgument
• net.minecraft.commands.arguments.coordinates.BlockPosArgument
• net.minecraft.core.NonNullList
• net.minecraft.core.UUIDUtil
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.server.MinecraftServer
• net.minecraft.util.Prediction
• net.minecraft.world.Container
• net.minecraft.world.ContainerHelper
• net.minecraft.world.MenuProvider
• net.minecraft.world.SimpleContainer
• net.minecraft.world.entity.player.Inventory
• net.minecraft.world.inventory.AbstractContainerMenu
• net.minecraft.world.inventory.ContainerLevelAccess
• net.minecraft.world.inventory.Slot
• net.minecraft.world.item.CreativeModeTab.Builder
• net.minecraft.world.item.CreativeModeTab.DisplayItemsGenerator
• net.minecraft.world.item.CreativeModeTab.ItemDisplayParameters
• net.minecraft.world.item.CreativeModeTab.Output
• net.minecraft.world.item.CreativeModeTab.Row
• net.minecraft.world.level.block.BaseEntityBlock
• net.minecraft.world.level.block.RenderShape
• net.minecraft.world.level.block.entity.BlockEntity
• net.minecraft.world.level.block.entity.BlockEntityType
• net.minecraft.world.level.block.entity.BlockEntityType.BlockEntitySupplier
• net.minecraft.world.level.storage.ValueInput
• net.minecraft.world.level.storage.ValueOutput
• net.minecraft.world.phys.HitResult.Type
• BlockPos.CODEC
• BuiltInRegistries.BLOCK_ENTITY_TYPE
• BuiltInRegistries.CREATIVE_MODE_TAB
• ServerLevel.getBlockEntity()
• ServerLevel.getServer()
• ServerPlayer.drop()
• ServerPlayer.pick()
• and 6 more

On the roadmap: Code next to data (0.3), Machines (0.4)

In the author's words

Adds a Mailbox item that can be used to send and receive mail. Includes multiple states to show you if you have items waiting for you and if your mailbox is full.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file aps-fabric-26.3-1.2.1.jar. The scan reads the mod's classes; it does not run them.