BrowserMCEF

Evidence

Ran on Kiln's test stand (2026-11-04): BrowsermodMCEFClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/screen/v1/ScreenEvents.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.Window
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterInit
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.BeforeInit
• net.minecraft.client.Options
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.components.EditBox
• net.minecraft.client.gui.components.Tooltip
• net.minecraft.client.gui.screens.ConfirmLinkScreen
• net.minecraft.client.input.CharacterEvent
• net.minecraft.client.input.KeyEvent
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.network.chat.CommonComponents
• net.minecraft.util.Util
• KeyMapping.getTranslatedKeyMessage()
• Minecraft.execute()
• Minecraft.gameDirectory
• Minecraft.getWindow()
• Minecraft.options
• Minecraft.setScreenAndShow()
• Font.width()
• GuiGraphicsExtractor.blit()
• GuiGraphicsExtractor.fillGradient()
• GuiGraphicsExtractor.textWithBackdrop()
• Screen.charTyped()
• Screen.children()
• Screen.extractRenderState()
• Screen.keyPressed()
• Screen.keyReleased()
• Screen.mouseClicked()
• Screen.mouseDragged()
• Screen.mouseMoved()
• Screen.mouseReleased()
• Screen.mouseScrolled()
• Screen.removed()
• Screen.tick()

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

A fully functional Minecraft Web Browser with Browsertabs, PiP ingame Mode, Fullscreen mode and much more.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file browsermod-0.1-26.3.jar. The scan reads the mod's classes; it does not run them.