command_execution · Pentest MCP: Risk & Policy

WHAT IT DOES

What command_execution does on PentestMCP

AI agents invoke command_execution to trigger actions in PentestMCP. 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 command_execution needs a policy

command_execution triggers real processes with real consequences. An agent gone sideways doesn't fire it once — it starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

command_execution Rate-limited

command_execution 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": {
    "command_execution": {
      "limits": [
        {
          "counter": "command_execution_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 PentestMCP, so you can run agents against it safely.

FAQ

Questions about command_execution

What does the command_execution tool do? +

execute powershell commands if we have pwned the user, possible to use ntlm or password for authentication. It is categorised as a Execute tool in the PentestMCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on command_execution? +

Register the Pentest MCP server in PolicyLayer and add a rule for command_execution: 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 PentestMCP. Nothing to install.

What risk level is command_execution? +

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

Can I rate-limit command_execution? +

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

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

command_execution is provided by the Pentest MCP server (youssefsahnoun/pentestmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.