Steamworks Release Assistant MCP server

steamworks-mcp

Put your game on Steam with your AI assistant. It reads your game project, asks you what it cannot find, writes your store page with you, checks everything against Valve's rules, and fills in Steamworks only after you say yes. It never publishes anything: you press Publish.

Works with Claude (Desktop, Code and claude.ai), ChatGPT (web and desktop app) and Codex (app, CLI and IDE extension). Free and open source (MIT).

37 tools · 36 skills · 24 code rules · 124 release checks · 114 store-text rules · Unity, Godot and Unreal

<!-- mcp-name: io.github.wazzapsenk/steamworks-mcp -->

Not affiliated with or endorsed by Valve. "Steam" and "Steamworks" are trademarks of Valve Corporation.

Contents: How it works · Install · Your first conversation · Words you will see · What it can do · Skills · Code rules · Safety · Known limits · Advanced setup

How it works

flowchart LR
    A["Your game folder"] --> B["Scan: what the project<br/>already says"]
    B --> C["Questions for<br/>what is missing"]
    C --> D["Drafts: store text, achievements,<br/>images, settings, SDK code"]
    D --> E{"You approve?"}
    E -- "change it" --> D
    E -- "yes" --> F["Checks against<br/>Valve's rules"]
    F --> G["Files + a checklist<br/>for Steamworks"]
    F --> H["Fills Steamworks<br/>after a dry run and your OK"]
    G --> I["You press Publish<br/>in Steamworks"]
    H --> I

Your game goes through four release steps, the same ones Valve reviews. The tool shows how far each one is:

flowchart LR
    S0["Step 0 · Prerequisites<br/>account, bank, tax, app fee"] --> S1["Step 1 · Store page<br/>texts, images, tags, languages"]
    S1 --> S2["Step 2 · Build review<br/>the game, Steam features"]
    S2 --> S3["Step 3 · Release<br/>date, price, Release button"]

Everything about your game's Steam release lives in one readable file in your game folder, steamworks.yaml. Every value in it has a status: missing, draft (found or written, not yet checked by you), approved (you said it is right), or done in Steamworks.

Install

You need uv, a small tool that runs Python programs (one command to install), and Claude, ChatGPT or Codex. You do not need Steam keys or a Steam login to start.

The server speaks both MCP transports:

Over HTTP every request needs sign-in (OAuth, or a bearer token); over stdio only the app that started the server can talk to it.

Claude Desktop

In a terminal:

uvx steamworks-mcp setup

It asks where your games are and connects Claude Desktop (and Claude Code, if you have it). Restart Claude Desktop. To use the skills there too, add the folders in skills/ as skills in Claude's settings.

Claude Code: the plugin (server and skills in one step)

In Claude Code, type:

/plugin marketplace add https://github.com/wazzapsenk/steamworks-mcp
/plugin install steamworks@steamworks-mcp

It asks for your games folder. That's it.

ChatGPT (web or desktop app) and claude.ai

These apps reach the server over the internet, through a secure address on your computer.

Shortened. The full README is on GitHub.