Forge

Forge is a browser-based voxel world where people can explore, point at a location, and ask ChatGPT to build what they imagine.

Using WebMCP, ChatGPT can understand the player's position, target, and nearby terrain, then construct and modify structures directly in the live world.

• Rust 1.90 or newer
• Node.js
• pnpm
• cargo-watch
• wasm-pack
• protoc

pnpm install
pnpm proto
pnpm build
pnpm demo

Open http://localhost:3000.

The browser client runs on port 3000 and the world server runs on port 4000.

Forge is deployed using:

• examples/client is the deployed ChatGPT Site frontend and hosts the WebMCP experience.
• examples/server is the deployed Render backend: the authoritative world server and persistent world data.

The WebMCP tool specification starts in examples/client/src/forge/runtime.ts, at toolDefinitions.

Forge is based on Voxelize, an open-source multiplayer voxel engine for the browser.

The original Voxelize copyright and license notice are preserved.

• Connection Serif Font, licensed under the SIL Open Font License
• Pixel Perfection by XSSheep, modified and licensed under CC BY-SA 4.0

Forge source code is available under the MIT License.

Third-party assets remain available under their respective licenses.