AI agents call get_global_achievement_percentages to retrieve information from Steam without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves aggregated, public-facing statistics about achievement rarity across the Steam player base. It performs a data query with no side effects, no code execution, no data modification, and no destructive operations. The data retrieved is informational and already publicly available through Steam's platform. Classification as Read is appropriate.
From the tool's definition Tool name and description indicate retrieval of read-only data: 'Get the global unlock percentage for each achievement in a game' — queries existing achievement statistics with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
Get the global unlock percentage for each achievement in a game — how rare each achievement is across all players. It is categorised as a Read tool in the Steam MCP Server, which means it retrieves data without modifying state.
Register the Steam MCP server in PolicyLayer and add a rule for get_global_achievement_percentages: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Steam. Nothing to install.
get_global_achievement_percentages is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_global_achievement_percentages rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_global_achievement_percentages. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_global_achievement_percentages is provided by the Steam MCP server (matheusslg/steam-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →