Agent use case pack · Games

Give a coding agent eyes inside the game engine with your own MCP server

by PaperChaseWebb

A streamer who saw models struggle at game dev on an earlier stream built his own MCP server that hooks Opus 5.5 into the s&box engine, so the agent works inside the editor instead of guessing, and used a swarm of agents to build a game about stopping an AI swarm.

Preview card for Give a coding agent eyes inside the game engine with your own MCP server
Works withPlain .md
Price
Free
Difficulty
Advanced
Setup
1 hr
Format
.md file
Free sample

give-a-coding-agent-eyes-inside-the-game-engine-with-your-own-mcp-server.md · 1 KB · direct download, no signup

Download free

What you end up with

The lesson matches other engine integrations: agents do much better when they can query the scene and see results than when they only edit files blind.

What you get

  • A plain-language summary of the workflow
  • A fill-in prompt template
  • What to watch out for
  • A link to the original source

Who it is for

Builders who already use AI agents and want a proven workflow they can copy into their own project.

Works with

Plain .md

Dashed chip: Plain Markdown, so it also pastes into other agents such as Grok Bot, Hermes, OpenClaw or Muse. We list those as compatible by format only, not as tested.

Tools needed

Opus 5.5plans and writes the game
Custom MCP serverconnects the model to the s&box editor
s&boxgame engine
You needAn AI coding agent or chat model
You needA small real task to try it on

Cost to run: Free with the agent plan you already use.
Time to result: One working session

How it works

  1. Read what they did

    Skim the source post linked below, then the summary on this page.

    Expected: You know the setup and the one rule that made it work.

  2. Fill in the template

    Copy the prompt and replace every [bracketed] value with your own project details.

    Expected: A prompt that fits your project.

  3. Run it once and check

    Run it on a small task first and confirm the result yourself before you trust it on real work.

    Expected: One verified run.

Sample prompt from the pack

Workflow template · Opus 5.5, Custom MCP server
Expose engine actions and scene state through a small MCP server
Let the agent read the scene before editing it
Decide up front whether agents plan the build or only write code

Adapted by PaperChaseWebb. Not the original author's prompt.

Free preview of the file

give-a-coding-agent-eyes-inside-the-game-engine-with-your-own-mcp-server.md (excerpt)1 KB total
# Give a coding agent eyes inside the game engine with your own MCP server

PaperChase agent use case (free feed entry), version 1.0. Source: [WillMakesTV (@WillMakesTV on X)](https://x.com/WillMakesTV/status/2113620727312355544), 2026-10-23.

## What they did

He wrote an MCP server that exposes the s&box engine to the model, then ran the build live on YouTube with several agents working on the project.

## Worth knowing

The lesson matches other engine integrations: agents do much better when they can query the scene and see results than when they only edit files blind. The full process is in the video rather than a written guide.

Worth knowing

  • The lesson matches other engine integrations: agents do much better when they can query the scene and see results than when they only edit files blind. The full process is in the video rather than a written guide.
  • Figures are as reported by the original author and were not re-measured by us.

Questions

Where does this come from?

A public post credited to WillMakesTV (@WillMakesTV on X). Source: https://x.com/WillMakesTV/status/2113620727312355544

Is it free?

Yes. Feed entries are free to read and download.

Details

Version 1.0 · Updated Oct 26, 2026 · Markdown version of this page
License: Personal and commercial use. Credit the original source when you share the workflow. Download terms

gamesmcps-and-boxopuslivestream