Steam Mcp Server

Steam MCP Server

An MCP (Model Context Protocol) server that provides tools for interacting with the Steam Web API.

Setup

1. Get a Steam API Key

Obtain an API key from Steam's developer portal.

2. Install Dependencies

npm install

3. Build

npm run build

4. Configure Your MCP Client

Claude Code

Add to your Claude Code settings file (~/.claude/settings.json):

{
  "mcpServers": {
    "steam": {
      "command": "node",
      "args": ["/path/to/steam-mcp-server/dist/index.js"],
      "env": {
        "STEAM_API_KEY": "your-api-key-here",
        "STEAM_ID": "your-64-bit-steam-id"
      }
    }
  }
}

Or use npx (no build required):

{
  "mcpServers": {
    "steam": {
      "command": "npx",
      "args": ["-y", "steam-mcp-server"],
      "env": {
        "STEAM_API_KEY": "your-api-key-here",
        "STEAM_ID": "your-64-bit-steam-id"
      }
    }
  }
}

Claude Desktop

Add to your Claude Desktop configuration:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "steam": {
      "command": "npx",
      "args": ["-y", "steam-mcp-server"],
      "env": {
        "STEAM_API_KEY": "your-api-key-here",
        "STEAM_ID": "your-64-bit-steam-id"
      }
    }
  }
}

Cursor

Add to Cursor's MCP settings (.cursor/mcp.json in your project or global config):

{
  "mcpServers": {
    "steam": {
      "command": "npx",
      "args": ["-y", "steam-mcp-server"],
      "env": {
        "STEAM_API_KEY": "your-api-key-here",
        "STEAM_ID": "your-64-bit-steam-id"
      }
    }
  }
}

Windsurf

Add to Windsurf's MCP configuration (~/.windsurf/mcp.json):

{
  "mcpServers": {
    "steam": {
      "command": "npx",
      "args": ["-y", "steam-mcp-server"],
      "env": {
        "STEAM_API_KEY": "your-api-key-here",
        "STEAM_ID": "your-64-bit-steam-id"
      }
    }
  }
}

Environment Variables

| Variable | Required | Description | |----------|----------|-------------| | STEAM_API_KEY | Yes | Your Steam Web API key | | STEAM_ID | No | Default Steam ID to use when not specified in tool calls | | STEAM_HTTP_TIMEOUT_MS | No | Per-request timeout for Steam API calls in milliseconds (default 10000) |

When STEAM_ID is set, you can call tools like get_owned_games without passing a Steam ID - it will use your default profile automatically.

Reliability & Pagination

• Every Steam API request is bounded by a timeout (STEAM_HTTP_TIMEOUT_MS) and automatically retries transient failures (timeouts, HTTP 429, and 5xx) with exponential backoff. Non-retriable errors (401/403/404) fail fast with a clear, actionable message, and failures are returned with isError: true.
• List-returning tools accept limit and offset and return a consistent envelope with the pre-slice total and a has_more flag, e.g. { "total_games": 412, "returned": 50, "offset": 0, "has_more": true, "games": [...] }. get_inventory additionally returns a next_cursor (Steam start_assetid) for deep paging.
• search_apps uses Steam's relevance-ranked storefront search (no full-catalog download), so it returns the top matches quickly and reliably.

Available Tools

Social & Profile

| Tool | Description | |------|-------------| | get_player_summary | Get player profile info (name, avatar, status, current game) | | get_friends_list | Get a player's friends list | | get_steam_level | Get player's Steam account level | | get_badges | Get player's badges, XP, and level progression | | get_badge_progress | Get trading card collection progress | | get_player_bans | Check for VAC bans, game bans, or trade bans | | get_user_groups | Get Steam groups a player belongs to | | resolve_vanity_url | Convert vanity URL to 64-bit Steam ID |

Game Library

| Tool | Description | |------|-------------| | get_owned_games | Get all games owned with playtime stats (supports pagination) | | get_recently_played | Get games played in last 2 weeks | | get_game_details | Get detailed game info (description, price, requirements) | | is_playing_shared_game | Check if playing via Steam Family Sharing | | search_apps | Search Steam catalog by game name |

Achievements & Stats

| Tool | Description | |------|-------------| | get_achievements | Get player's achievements for a game | | get_game_stats | Get player's statistics for a game | | get_global_achievement_percentages | Get global achievement unlock rates | | get_global_game_stats | Get global aggregated stats for a game | | get_perfect_games | Get games where player has 100% achievements | | get_achievement_summary | Get condensed achievement progress across games | | get_game_schema | Get achievement/stat definitions for a game |

Game Info

| Tool | Description | |------|-------------| | get_game_news | Get latest news and patch notes for a game | | get_player_count | Get current number of players in a game | | get_servers_at_address | Get game servers at a specific IP | | check_app_update | Check if an app version is up to date |

Inventory

| Tool | Description | |------|-------------| | get_inventory | Get inventory for any game (requires public profile) | | get_tf2_inventory | Get Team Fortress 2 inventory | | get_csgo_inventory | Get CS2/CSGO inventory | | get_dota2_inventory | Get Dota 2 inventory |

Finding Your Steam ID

Use resolve_vanity_url with your custom profile URL, or find your 64-bit Steam ID at steamid.io.

License

MIT

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: sharkusmanch
• Source: sharkusmanch/steam-mcp-server
• License: MIT

Install and usage instructions live in the source repository linked above.