roll_dice · MCP-Server MCP: Risk & Policy

WHAT IT DOES

What roll_dice does on MCP-Server

AI agents call roll_dice as a supporting operation in MCP-Server workflows.

WHY IT NEEDS A POLICY

Why roll_dice needs a policy

This tool simulates a dice roll, which is a purely computational/random number generation operation. It does not read from external data sources, write or modify data, execute system commands, destroy data, or involve financial transactions. It is a self-contained mathematical/random operation with no side effects.

From the tool's definition Roll the dice with the given notation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

roll_dice Rate-limited

roll_dice gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "roll_dice": {
      "limits": [
        {
          "counter": "roll_dice_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about roll_dice

What does the roll_dice tool do? +

Roll the dice with the given notation. It is categorised as a Other tool in the MCP-Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on roll_dice? +

Register the MCP-Server MCP server in PolicyLayer and add a rule for roll_dice: 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 MCP-Server. Nothing to install.

What risk level is roll_dice? +

roll_dice is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit roll_dice? +

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

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

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

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