Query Steam store data, player statistics, achievements, reviews, pricing, workshop items, leaderboards, inventory, and player profiles - all as structured MCP tools callable from Cursor's AI agent.

No API key required for most features. Store lookups, player counts, global achievement stats, news, reviews, and app searches all work out of the box.

Getting Started

Prerequisites

• Node.js 20 or later
• npm

Install

git clone https://github.com/TMHSDigital/Steam-MCP.git
cd Steam-MCP
npm install
npm run build

Steam API Key

Some tools require a Steam Web API key. Get one free at steamcommunity.com/dev/apikey.

Set it as an environment variable:

# Bash / macOS / Linux
export STEAM_API_KEY="your_key_here"

# PowerShell
$env:STEAM_API_KEY = "your_key_here"

Or in a .env file:

STEAM_API_KEY=your_key_here

Tools that don't need a key work out of the box with zero configuration.

Usage with Cursor

Add the Steam MCP server to your Cursor MCP settings (.cursor/mcp.json in your project or global settings):

Via npx (recommended):

{
  "mcpServers": {
    "steam": {
      "command": "npx",
      "args": ["-y", "@tmhs/steam-mcp"],
      "env": {
        "STEAM_API_KEY": "your_key_here"
      }
    }
  }
}

Via local clone:

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

Once configured, the tools are available to Cursor's AI agent. Pair with the Steam Developer Tools plugin for the full skill set.

Available Tools (v0.7.0) - 25 Total

These work without an API key:

| Tool | Description | |------|-------------| | steam_getAppDetails | Store data: price, description, reviews, tags, platforms, system requirements | | steam_searchApps | Search for games/apps by name or keyword | | steam_getPlayerCount | Current concurrent player count | | steam_getAchievementStats | Global achievement unlock percentages | | steam_getWorkshopItem | Workshop item details (title, description, tags, subscribers) | | steam_getReviews | Fetch user reviews with filters for language, sentiment, purchase type | | steam_getPriceOverview | Batch price check for multiple apps in a specific region | | steam_getAppReviewSummary | Review score, total counts, and positive percentage (no individual reviews) | | steam_getRegionalPricing | Pricing breakdown across multiple countries/regions | | steam_getNewsForApp | Recent news articles with title, URL, contents, date, and author |

These require STEAM_API_KEY to be set:

| Tool | Description | |------|-------------| | steam_getPlayerSummary | Player profile: name, avatar, online status | | steam_getOwnedGames | Game library with playtime data | | steam_queryWorkshop | Search/browse Workshop items with filters | | steam_getLeaderboardEntries | Leaderboard scores and rankings (pass numeric ID from Steamworks dashboard) | | steam_resolveVanityURL | Convert vanity URL to 64-bit Steam ID | | steam_getSchemaForGame | Achievement/stat schema with display names, descriptions, and icon URLs | | steam_getPlayerAchievements | Per-player achievement unlock status and timestamps | | steam_getLeaderboardsForGame | List all leaderboards with numeric IDs, names, and sort methods |

These require a publisher API key with server IP allowlisted in Steamworks partner settings. SDK-only tools return code examples instead of making HTTP calls.

| Tool | Type | Description | |------|------|-------------| | steam_createLobby | SDK guide | Returns C++/C#/GDScript code for ISteamMatchmaking lobby creation | | steam_uploadWorkshopItem | SDK guide | Returns code for ISteamUGC Workshop upload workflow | | steam_updateWorkshopItem | HTTP POST | Update Workshop item metadata via IPublishedFileService partner API | | steam_setAchievement | HTTP POST | Set/unlock achievements via ISteamUserStats partner API (dev/test) | | steam_clearAchievement | HTTP POST | Clear/re-lock achievements via ISteamUserStats partner API (dev/test) | | steam_uploadLeaderboardScore | HTTP POST | Upload scores via ISteamLeaderboards partner API | | steam_grantInventoryItem | HTTP POST | Grant inventory items via IInventoryService partner API |

| Endpoint | Auth | |----------|------| | store.steampowered.com/api/appdetails | None | | store.steampowered.com/api/storesearch | None | | ISteamUserStats/GetNumberOfCurrentPlayers/v1 | None | | ISteamUserStats/GetGlobalAchievementPercentagesForApp/v2 | None | | ISteamNews/GetNewsForApp/v2 | None | | ISteamRemoteStorage/GetPublishedFileDetails/v1 | None | | store.steampowered.com/appreviews/{appid} | None | | ISteamUser/GetPlayerSummaries/v2 | API key | | IPlayerService/GetOwnedGames/v1 | API key | | ISteamUser/ResolveVanityURL/v1 | API key | | IPublishedFileService/QueryFiles/v1 | API key | | ISteamUserStats/GetSchemaForGame/v2 | API key | | ISteamUserStats/GetPlayerAchievements/v1 | API key | | ISteamLeaderboards/GetLeaderboardEntries/v1 | Publisher key | | ISteamLeaderboards/GetLeaderboardsForGame/v2 | API key | | IPublishedFileService/UpdateDetails/v1 (POST) | Publisher key | | ISteamUserStats/SetUserStatsForGame/v1 (POST) | Publisher key | | ISteamLeaderboards/SetLeaderboardScore/v1 (POST) | Publisher key | | IInventoryService/AddItem/v1 (POST) | Publisher key |

npm run dev         # Watch mode with auto-reload
npm run build       # Compile TypeScript to dist/
npm start           # Run the compiled server
npm test            # Run all tests (vitest)
npm run test:watch  # Test watch mode

See CONTRIBUTING.md for how to add new tools and submit PRs.

Related

• Steam Developer Tools - Cursor IDE plugin with 30 skills and 9 rules for Steam/Steamworks development

License

CC BY-NC-ND 4.0 - see LICENSE for details.