generate_random_number · MCP Rand MCP: Risk & Policy

WHAT IT DOES

What generate_random_number does on MCP Rand

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

WHY IT NEEDS A POLICY

Why generate_random_number needs a policy

An AI agent can call generate_random_number faster than any human can review — one bad instruction and it creates or modifies resources in MCP Rand by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_random_number Rate-limited

generate_random_number 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": {
    "generate_random_number": {
      "limits": [
        {
          "counter": "generate_random_number_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 MCP Rand, so you can run agents against it safely.

FAQ

Questions about generate_random_number

What does the generate_random_number tool do? +

Generate a random number within a specified range. It is categorised as a Write tool in the MCP Rand MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_random_number? +

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

What risk level is generate_random_number? +

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

Can I rate-limit generate_random_number? +

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

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

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