// SCAN REPORT

Steam MCP Server

25 tools. 6 can modify or destroy data without limits.

1 destructive tool with no built-in limits. Policy required.

Last updated: 29 Jun 2026

6 can modify or destroy data

19 read-only

25 tools total

Community server · catalogue entry verified 29/06/2026

How to control Steam MCP Server ↓

TOOL MAP

What Steam MCP Server exposes to your agents

Read (19) Write / Execute (5) Destructive / Financial (1)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

Critical Risk

The most dangerous Steam MCP Server tools

Destructive · High steam_clearAchievement This tool irreversibly modifies a player's achievement state by resetting/re-locking an earned achievement. Write · High steam_setAchievement This tool creates or modifies player achievement data reversibly (achievements can be reset in dev/test contexts), making it a Write operation. Write · Medium steam_updateWorkshopItem This tool creates or modifies data (metadata fields like title, description, visibility, tags) without permanently destroying it. Write · Medium steam_uploadLeaderboardScore This tool creates or modifies leaderboard score data, which is reversible (scores can be updated or removed by legitimate means).

6 of Steam MCP Server's 25 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Steam MCP Server

PolicyLayer is an MCP gateway — it sits between your AI agents and Steam MCP Server, and nothing reaches the server without passing your rules. These are the rules we recommend:

Deny destructive operations

{
  "steam_clearAchievement": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Blocked by default. Requires approval."
      }
    ]
  }
}

Destructive tools should never be available to autonomous agents without human approval.

Rate limit write operations

{
  "steam_grantInventoryItem": {
    "limits": [
      {
        "counter": "steam_grantinventoryitem_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "steam_createLobby": {
    "limits": [
      {
        "counter": "steam_createlobby_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Steam MCP Server — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON STEAM →

Instant setup, no code required.

FULL CATALOGUE

All 25 Steam MCP Server tools

DESTRUCTIVE 1 tools

Destructive steam_clearAchievement Clear (re-lock) an achievement for a player via the partner API. Intended for dev/test use. Requires a publish

WRITE 5 tools

Write steam_grantInventoryItem Grant an inventory item to a player via the partner API. Intended for dev/test or server-side rewards. Require Write steam_setAchievement Set (unlock) an achievement for a player via the partner API. Intended for dev/test use. Requires a publisher Write steam_updateWorkshopItem Update metadata for an existing Steam Workshop item (title, description, visibility, tags) via the partner API Write steam_uploadLeaderboardScore Upload a score to a Steam leaderboard via the partner API. Requires a publisher API key with server IP allowli Write steam_uploadWorkshopItem Get code examples and documentation for uploading new Steam Workshop items. Workshop uploads require the Steam

READ 19 tools

Read steam_createLobby Get code examples and documentation for creating Steam multiplayer lobbies. Lobby creation is a client-side SD Read steam_getAchievementStats Get global achievement unlock percentages for a Steam app. Shows how many players have unlocked each achieveme Read steam_getAppDetails Get Steam store data for an app including price, description, reviews, tags, platforms, and system requirement Read steam_getAppReviewSummary Get review summary statistics for a Steam app: total positive/negative counts, review score, and score descrip Read steam_getLeaderboardEntries Get leaderboard scores and rankings for a Steam app. Pass the numeric leaderboard ID from your Steamworks dash Read steam_getLeaderboardsForGame List all leaderboards for a Steam app with their numeric IDs, names, and sort methods. Requires a free Steam W Read steam_getNewsForApp Get recent news articles for a Steam app. Returns titles, URLs, contents, dates, and authors. No API key requi Read steam_getOwnedGames Get a player Read steam_getPlayerAchievements Get a specific player Read steam_getPlayerCount Get the current number of concurrent players for a Steam app. No API key required. Read steam_getPlayerSummary Get a player Read steam_getPriceOverview Batch price check for multiple Steam apps in a specific region. Returns formatted price data including base pr Read steam_getRegionalPricing Get pricing for a Steam app across multiple regions/countries. Returns price, currency, and discount info for Read steam_getReviews Fetch user reviews for a Steam app with filters for language, sentiment, purchase type, and pagination. No API Read steam_getSchemaForGame Get the achievement and stat schema for a Steam app. Returns achievement internal names, display names, descri Read steam_getWorkshopItem Get details for a Steam Workshop item including title, description, tags, preview images, and subscriber count Read steam_queryWorkshop Search and browse Steam Workshop items for a given app. Filter by text, tags, and sort order. Requires STEAM_A Read steam_resolveVanityURL Convert a Steam vanity URL (custom profile name) to a 64-bit Steam ID. Requires STEAM_API_KEY. Read steam_searchApps Search the Steam store for games and apps by name or keyword. Returns app IDs, names, icons, and price info. N

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about Steam MCP Server

Can an AI agent delete data through the Steam MCP Server MCP server? +

Yes. The Steam MCP Server server exposes 1 destructive tools including steam_clearAchievement. These permanently remove resources with no undo. PolicyLayer blocks destructive tools by default so they never reach the upstream server.

How do I prevent bulk modifications through Steam MCP Server? +

The Steam MCP Server server has 5 write tools including steam_grantInventoryItem, steam_setAchievement, steam_updateWorkshopItem. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Steam MCP Server.

How many tools does the Steam MCP Server MCP server expose? +

25 tools across 3 categories: Destructive, Read, Write. 19 are read-only. 6 can modify, create, or delete data.

How do I enforce a policy on Steam MCP Server? +

Register the Steam MCP Server MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Steam MCP Server tool call.

Deterministic rules across all 25 Steam MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON STEAM →

Instant setup, no code required.

25 Steam MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.