multiply · MCP Simple Server MCP: Risk & Policy

WHAT IT DOES

What multiply does on MCP Simple Server

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

WHY IT NEEDS A POLICY

Why multiply needs a policy

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

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

multiply Rate-limited

multiply 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": {
    "multiply": {
      "limits": [
        {
          "counter": "multiply_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 Simple Server, so you can run agents against it safely.

FAQ

Questions about multiply

What does the multiply tool do? +

Multiply two numbers. It is categorised as a Write tool in the MCP Simple Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on multiply? +

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

What risk level is multiply? +

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

Can I rate-limit multiply? +

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

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

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