Get list of online players
AI agents call player_list to retrieve information from Minecraft Server MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only query that returns information about online players on the Minecraft server. It has no side effects, does not execute commands, does not modify data, and poses no risk of data loss or unauthorized actions. The information retrieved is non-sensitive player presence data that is typically visible in-game.
From the tool's definition Tool name is 'player_list' and description states 'Get list of online players' — this retrieves data about currently connected players without modifying any state.
Attacks that exploit this kind of access
Get list of online players. It is categorised as a Read tool in the Minecraft Server MCP MCP Server, which means it retrieves data without modifying state.
Register the Minecraft Server MCP server in PolicyLayer and add a rule for player_list: 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 Minecraft Server MCP. Nothing to install.
player_list 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 player_list 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 player_list. 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.
player_list is provided by the Minecraft Server MCP server (ver-zhzh/mcp-for-minecraft-server). 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.
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