FasterLadderClimbing

Evidence

Ran on Kiln's test stand (2026-11-04): FasterLadderClimbingFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; FasterLadderClimbingFabricClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload$Type.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.minecraft.client.Options
• net.minecraft.client.gui.components.AbstractSliderButton
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.util.thread.BlockableEventLoop
• KeyMapping.isDown()
• Minecraft.execute()
• Minecraft.hasSingleplayerServer()
• Minecraft.options
• GuiGraphicsExtractor.centeredText()

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Climb ladders faster with the control scheme you choose — look up to ascend, look down to descend, or hold jump. Set your own ascent and descent speed from an in-game screen

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file fasterladderclimbing-fabric-26.3-1.2.0.jar. The scan reads the mod's classes; it does not run them.