Steam-MCP
Allows querying Steam game library, player profiles, achievements, friends, store listings, Workshop items, and current player counts via Steam Web API.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Steam-MCPwhat's the current player count for Team Fortress 2?"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Steam-MCP
MCP server for Valve's Steam — query your game library, player profile, achievements, friends, store listings, Workshop items, and current player counts. 14 tools across 5 categories, with a React dashboard and REST bridge.
Features
Profile — look up yourself, any player, friends list, resolve vanity URLs
Library — owned games with playtime, recently played, detailed store info (no key needed)
Stats — per-game achievements, global achievement percentages, current player counts, leaderboards
Store & News — latest news per game, search the store by name
Workshop — query published workshop items by app, sort by popularity/recency
No API key needed for: store details, player counts, news, achievement percentages, and store search. API key unlocks profile, library, friends, and Workshop.
Quick Start
# 1. Clone & install
git clone https://github.com/sandraschi/steam-mcp.git
cd steam-mcp
uv sync
# 2. Set your Steam Web API key (free)
# Get one: https://steamcommunity.com/dev/apikey
$env:STEAM_API_KEY = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
$env:STEAM_ID = "7656119xxxxxxxxxx" # your 64-bit Steam ID
# 3. Start the server
just serveServer runs on http://localhost:11020. MCP endpoint at http://localhost:11020/mcp. REST bridge at /api/status, /api/tools, /api/tools/{name}/call.
Tools
Profile
Tool | Description | Key |
| Player summary for configured STEAM_ID | Yes |
| Look up any player(s) by Steam ID | Yes |
| List friends for a user | Yes |
| Resolve custom URL to 64-bit Steam ID | Yes |
Library
Tool | Description | Key |
| Full game library with playtime | Yes |
| Recently played games | Yes |
| Store page data (name, price, description, screenshots) | No |
Stats
Tool | Description | Key |
| Player's achievements for a game | Yes |
| Global completion rates | No |
| Concurrent players right now | No |
| List leaderboards for a game | Yes |
Store & News
Tool | Description | Key |
| Latest news articles | No |
| Search games by name | No |
Workshop
Tool | Description | Key |
| Query Workshop items | Yes |
Usage
As an MCP server (for AI assistants)
Connect any MCP-compatible client to the STDIO or HTTP endpoint:
// Claude Desktop, opencode, etc.
{
"mcpServers": {
"steam": {
"command": "uv",
"args": ["run", "steam-mcp"],
"env": {
"STEAM_API_KEY": "...",
"STEAM_ID": "..."
}
}
}
}Or via HTTP SSE:
{
"mcpServers": {
"steam": {
"url": "http://localhost:11020/mcp"
}
}
}Via REST API
# Status
curl http://localhost:11020/api/status
# List tools
curl http://localhost:11020/api/tools
# Call a tool
curl -X POST http://localhost:11020/api/tools/get_number_of_current_players/call \
-H "Content-Type: application/json" \
-d '{"arguments": {"app_id": 440}}'Via React Dashboard
start.ps1 # launches backend + frontend
# or
just frontend-dev # frontend only on http://localhost:11021Godot + Steam Publishing
This MCP handles accessing Steam data. To publish a Godot game on Steam:
GodotSteam (godotsteam.com) — GDExtension that wraps Steamworks SDK as native Godot nodes. Handles achievements, leaderboards, lobbies, networking, Workshop, overlay, DRM, cloud saves.
Steamworks Partner — Register at partner.steamgames.com. $100 Steam Direct fee per game, recoupable after $1K revenue. 70/30 revenue split.
SteamPipe — Upload builds via
steamcmd.exe. Supports delta patching, beta branches, rollbacks.
Architecture
src/steam_mcp/
server.py # FastAPI + MCP HTTP composition
web.py # REST bridge
transport.py # STDIO/HTTP transport
config.py # Env-based settings
mcp/
registry.py # Shared FastMCP instance
tools/ # Tool implementations (14 tools, 5 files)
profile.py library.py stats.py store.py workshop.py
webapp/ # Vite React dashboard (TypeScript, Tailwind)
native/ # Tauri 2.0 scaffold (placeholder)Development
uv sync # Install Python deps
npm --prefix webapp i # Install frontend deps
just serve # Dev server with hot reload
just lint # Ruff check
npm run build -w webapp # Build frontendPorts
Service | Port |
Backend (FastAPI + MCP HTTP) | 11020 |
Frontend (Vite dev) | 11021 |
MCP Streamable HTTP |
|
License
MIT
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