power · Calculator MCP: Risk & Policy

WHAT IT DOES

What power does on Calculator MCP

AI agents invoke power to trigger actions in Calculator MCP. 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 power needs a policy

The tool performs an arithmetic exponentiation operation. While it's a computation (Execute), it has no side effects, cannot access external resources, and is constrained to numerical calculation. The severity is low because the blast radius of misuse is minimal — it simply returns a number.

From the tool's definition Tool name 'power' and description '计算幂运算' (calculate power/exponentiation operation) indicate execution of a mathematical computation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

power Rate-limited

power 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": {
    "power": {
      "limits": [
        {
          "counter": "power_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 Calculator MCP, so you can run agents against it safely.

FAQ

Questions about power

What does the power tool do? +

计算幂运算. It is categorised as a Execute tool in the Calculator MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on power? +

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

What risk level is power? +

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

Can I rate-limit power? +

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

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

power is provided by the Calculator MCP server (kelseyee/mcp_calculator). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.