set_player_gamemode · OPanel MCP: Risk & Policy

WHAT IT DOES

What set_player_gamemode does on OPanel MCP

AI agents invoke set_player_gamemode to trigger actions in OPanel MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why set_player_gamemode needs a policy

This tool triggers an external operation on a live Minecraft server, changing a player's game mode (e.g., survival, creative, spectator). It is not a simple data write — it executes a server-side command that affects active gameplay state. Misuse could grant players creative mode (unlimited resources, flight) or spectator mode, disrupting game integrity, but it is reversible and not destructive.

From the tool's definition Set the game mode of a player on the Minecraft server

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_player_gamemode Rate-limited

set_player_gamemode stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_player_gamemode": {
      "limits": [
        {
          "counter": "set_player_gamemode_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about set_player_gamemode

What does the set_player_gamemode tool do? +

Set the game mode of a player on the Minecraft server. It is categorised as a Execute tool in the OPanel MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on set_player_gamemode? +

Register the OPanel MCP server in PolicyLayer and add a rule for set_player_gamemode: 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 OPanel MCP. Nothing to install.

What risk level is set_player_gamemode? +

set_player_gamemode is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit set_player_gamemode? +

Yes. Add a rate_limit block to the set_player_gamemode 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 set_player_gamemode completely? +

Set action: deny in the PolicyLayer policy for set_player_gamemode. 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 set_player_gamemode? +

set_player_gamemode is provided by the OPanel MCP server (opanel-mc/opanel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.