factorial · MCP Multi-Tool Server MCP: Risk & Policy

WHAT IT DOES

What factorial does on MCP Multi-Tool Server

AI agents invoke factorial to trigger actions in MCP Multi-Tool Server. 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 factorial needs a policy

The description is empty, so classification relies on the tool name and server context. 'Factorial' is a mathematical operation consistent with the sibling calculator tools (add, subtract, multiply, divide, etc.). It most likely computes a factorial of a number, which is a read/compute operation with no side effects. However, without a description, there is some uncertainty.

From the tool's definition Tool name is 'factorial'; description is empty and uninformative. Inferred from server context as a mathematical calculator tool.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

factorial Rate-limited

factorial 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": {
    "factorial": {
      "limits": [
        {
          "counter": "factorial_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 MCP Multi-Tool Server, so you can run agents against it safely.

FAQ

Questions about factorial

What does the factorial tool do? +

factorial. It is categorised as a Execute tool in the MCP Multi-Tool Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on factorial? +

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

What risk level is factorial? +

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

Can I rate-limit factorial? +

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

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

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