reset_simulation · MCP4DRL MCP: Risk & Policy

WHAT IT DOES

What reset_simulation does on MCP4DRL

AI agents use reset_simulation to create or update resources in MCP4DRL — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP4DRL environment.

WHY IT NEEDS A POLICY

Why reset_simulation needs a policy

Resetting the simulation restores it to its initial state, which is a reversible modification of the simulation's state. It does not delete data permanently, execute arbitrary code, or involve financial transactions. It does modify the current simulation state (losing any in-progress run), making it a Write operation.

From the tool's definition Reset the simulation to its initial state

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reset_simulation Rate-limited

reset_simulation 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": {
    "reset_simulation": {
      "limits": [
        {
          "counter": "reset_simulation_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 MCP4DRL, so you can run agents against it safely.

FAQ

Questions about reset_simulation

What does the reset_simulation tool do? +

Reset the simulation to its initial state. It is categorised as a Write tool in the MCP4DRL MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reset_simulation? +

Register the MCP4DRL MCP server in PolicyLayer and add a rule for reset_simulation: 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 MCP4DRL. Nothing to install.

What risk level is reset_simulation? +

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

Can I rate-limit reset_simulation? +

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

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

reset_simulation is provided by the MCP4DRL MCP server (mostapow/mcp4drl). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.