# Steam MCP Server

Lets an AI agent query Steam games, store data, and player accounts. Use it for game discovery, price checks, or library questions.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 5
- Author: Grinv
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/Grinv/steam-games-mcp
- Updated: 2026-10-22
- HTML: https://affpapa.org/en/nevibecode/mcp/steam-mcp-server

## What it does

Steam MCP Server exposes Steam data through MCP. An agent can search for games, inspect prices, discounts, genres, age ratings, reviews, and store news. Store queries work without a credential, so basic discovery needs only the server connection.

Player-focused requests use the free Steam Web API and `STEAM_ID`. They cover profiles, owned games, achievements, wishlists, and friends. The server runs over stdio with `npx -y steam-games-mcp` and is read-only: it does not launch games, post content, trade, or buy anything.

Your Steam profile and game details must be public for requests about your own library and achievements. Configuration uses `STEAM_API_KEY`, `STEAM_ID`, `STEAM_COUNTRY`, and `STEAM_LANGUAGE`; the last two values control the store region and language.

## Requirements
- Needs: Node.js (commands run via npx)
- Environment variables: `STEAM_API_KEY`, `STEAM_ID`, `STEAM_COUNTRY`, `STEAM_LANGUAGE` — keys and tokens: ask the human for the values, never commit them or put them in shared files.

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add --env STEAM_API_KEY=<STEAM_API_KEY> --env STEAM_ID=<STEAM_ID> --env STEAM_COUNTRY=<STEAM_COUNTRY> --env STEAM_LANGUAGE=<STEAM_LANGUAGE> --transport stdio steam-mcp-server -- npx -y steam-games-mcp
```
Replace <…> with your own values

### Codex

**Platform CLI**
```bash
codex mcp add steam-mcp-server --env STEAM_API_KEY=<STEAM_API_KEY> --env STEAM_ID=<STEAM_ID> --env STEAM_COUNTRY=<STEAM_COUNTRY> --env STEAM_LANGUAGE=<STEAM_LANGUAGE> -- npx -y steam-games-mcp
```
Replace <…> with your own values

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "steam-mcp-server": {
            "command": "npx",
            "args": [
                "-y",
                "steam-games-mcp"
            ],
            "env": {
                "STEAM_API_KEY": "<STEAM_API_KEY>",
                "STEAM_ID": "<STEAM_ID>",
                "STEAM_COUNTRY": "<STEAM_COUNTRY>",
                "STEAM_LANGUAGE": "<STEAM_LANGUAGE>"
            }
        }
    }
}
```
Replace <…> with your own values

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "steam-mcp-server": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "steam-games-mcp"
            ],
            "env": {
                "STEAM_API_KEY": "<STEAM_API_KEY>",
                "STEAM_ID": "<STEAM_ID>",
                "STEAM_COUNTRY": "<STEAM_COUNTRY>",
                "STEAM_LANGUAGE": "<STEAM_LANGUAGE>"
            }
        }
    }
}
```
Replace <…> with your own values

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add -e STEAM_API_KEY=<STEAM_API_KEY> -e STEAM_ID=<STEAM_ID> -e STEAM_COUNTRY=<STEAM_COUNTRY> -e STEAM_LANGUAGE=<STEAM_LANGUAGE> steam-mcp-server npx -y steam-games-mcp
```
Replace <…> with your own values

## When to use it
- search Steam by game title
- check current prices and discounts
- read review scores and store details
- track achievement progress and rarity
- inspect a personal game library

## Example prompts
- Find discounted Steam games with strong review scores.
- Show the price, genres, and age rating for appid `620`.
- Review my library and sort the games by playtime.

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