ban_player · Minecraft Server MCP: Risk & Policy

WHAT IT DOES

What ban_player does on Minecraft Server MCP

AI agents use ban_player to create or update resources in Minecraft Server MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Minecraft Server MCP environment.

WHY IT NEEDS A POLICY

Why ban_player needs a policy

An AI agent can call ban_player faster than any human can review — one bad instruction and it creates or modifies resources in Minecraft Server MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ban_player Rate-limited

ban_player stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "ban_player": {
      "limits": [
        {
          "counter": "ban_player_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Minecraft Server MCP, so you can run agents against it safely.

FAQ

Questions about ban_player

What does the ban_player tool do? +

Ban a player from the server. It is categorised as a Write tool in the Minecraft Server MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ban_player? +

Register the Minecraft Server MCP server in PolicyLayer and add a rule for ban_player: 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.

What risk level is ban_player? +

ban_player is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit ban_player? +

Yes. Add a rate_limit block to the ban_player 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.

How do I block ban_player completely? +

Set action: deny in the PolicyLayer policy for ban_player. 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.

What MCP server provides ban_player? +

ban_player is provided by the Minecraft Server MCP server (tamo2918/minecraft-server-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.