send_server_command · OPanel MCP: Risk & Policy

WHAT IT DOES

What send_server_command does on OPanel MCP

AI agents invoke send_server_command 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 send_server_command needs a policy

This tool executes arbitrary commands on the Minecraft server. Commands can have wide-ranging effects including kicking/banning players, modifying game state, spawning entities, changing server settings, or triggering destructive operations. Since the tool accepts arbitrary commands whose effects depend entirely on the arguments provided, Execute is the appropriate category.

From the tool's definition "Send a command to the Minecraft server"

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_server_command Rate-limited

send_server_command 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": {
    "send_server_command": {
      "limits": [
        {
          "counter": "send_server_command_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 send_server_command

What does the send_server_command tool do? +

Send a command to the Minecraft server. Use the tool get_latest_log_content to check the output of the command. 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 send_server_command? +

Register the OPanel MCP server in PolicyLayer and add a rule for send_server_command: 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 send_server_command? +

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

Can I rate-limit send_server_command? +

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

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

send_server_command 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.

// THE FULL RECORD

send_server_command is one line of OPanel's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →