deop_player · Minecraft Server MCP: Risk & Policy

WHAT IT DOES

What deop_player does on Minecraft Server MCP

AI agents use deop_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 deop_player needs a policy

Revoking operator (OP) status modifies a player's permissions/role on the server. This is a reversible change (OP status can be re-granted), making it a Write operation. Misuse could disrupt legitimate admins or moderators, giving it medium severity.

From the tool's definition Revoke operator status from a player

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

deop_player Rate-limited

deop_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": {
    "deop_player": {
      "limits": [
        {
          "counter": "deop_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 deop_player

What does the deop_player tool do? +

Revoke operator status from a player. 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 deop_player? +

Register the Minecraft Server MCP server in PolicyLayer and add a rule for deop_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 deop_player? +

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

Can I rate-limit deop_player? +

Yes. Add a rate_limit block to the deop_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 deop_player completely? +

Set action: deny in the PolicyLayer policy for deop_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 deop_player? +

deop_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.