Install the MCP server from https://github.com/matheusslg/steam-mcp

# Clone
git clone https://github.com/matheusslg/steam-mcp.git
cd steam-mcp

# Install & build
npm install
npm run build

# Add to Claude Code
claude mcp add steam -e STEAM_API_KEY=your_key_here -- node /absolute/path/to/steam-mcp/dist/index.js

{
  "mcpServers": {
    "steam": {
      "command": "node",
      "args": ["/absolute/path/to/steam-mcp/dist/index.js"],
      "env": {
        "STEAM_API_KEY": "your_key_here",
        "STEAM_ID": "your_steam_id_here"
      }
    }
  }
}

"How much is my Steam library worth?"
"Show me my shame list — games I own but have 0 hours played"
"What am I actually playing? Show me my last two weeks"

"What are my rarest achievements? Find ones less than 5% of players have"
"Which games am I closest to 100% completion on?"
"Give me an achievement difficulty report for Elden Ring"

"What are my friends playing right now?"
"Compare my game library with my friend's — what do we both own?"
"Rank my friends by Steam level"
"Who's the OG? Rank my friends by account creation date"

"Is Battlefield 2042 alive? Check the player count"
"Get me a news digest for the games I've played recently"
"Look up Celeste on Steam — price, reviews, the works"

"Is this player legit? Check their VAC ban history"
"How many bans does player X have?"

"What's on my Steam wishlist?"
"Show me the reviews for Elden Ring — what are people saying?"
"What's the review score for Cyberpunk 2077?"

"What's on sale on Steam right now?"
"Show me the top sellers and new releases on Steam"

"Show me my Counter-Strike stats — kills, deaths, wins"
"What are all the possible achievements for Hades?"

"Roast my Steam profile — age, level, games owned vs played, hours wasted"
"What games define my friend group? Most commonly owned games across all my friends"
"Give me my Counter-Strike addiction report"

steam-mcp/
├── src/
│   ├── index.ts              # Server entry point
│   ├── config.ts             # Environment config & Steam ID resolution
│   ├── types.ts              # Steam API response interfaces
│   ├── api/
│   │   ├── client.ts         # HTTP client with retry logic
│   │   └── endpoints.ts      # Steam API endpoint constants
│   └── tools/
│       ├── player.ts         # get_player_summary, get_steam_level, resolve_vanity_url, get_player_bans, get_badges
│       ├── library.ts        # get_owned_games, get_recently_played_games, get_wishlist
│       ├── game-info.ts      # get_game_details, get_game_news, get_player_count, get_game_reviews
│       ├── achievements.ts   # get_player_achievements, get_global_achievement_percentages, get_game_schema, get_user_stats_for_game
│       ├── social.ts         # get_friends_list, get_user_groups
│       └── discovery.ts      # search_apps, get_featured_games
├── package.json
├── tsconfig.json
├── LICENSE
└── README.md

npm run build       # Compile TypeScript
npm run dev         # Watch mode
npm run start       # Run the server
npm run clean       # Remove dist/