calc · Multi-Agent Tools Platform MCP: Risk & Policy

WHAT IT DOES

What calc does on Multi-Agent Tools Platform

AI agents invoke calc to trigger actions in Multi-Agent Tools Platform. 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 calc needs a policy

Evaluating an expression is an execution action (running computation). The word 'safely' suggests sandboxing, which limits blast radius, but it still executes dynamic input. Misuse potential is low since it appears constrained to numeric evaluation rather than arbitrary code, but it remains an Execute category due to the dynamic computation nature.

From the tool's definition "Evaluate numeric expression safely" — the tool runs/executes an expression, not merely retrieves stored data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

calc Rate-limited

calc 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": {
    "calc": {
      "limits": [
        {
          "counter": "calc_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 Multi-Agent Tools Platform, so you can run agents against it safely.

FAQ

Questions about calc

What does the calc tool do? +

Evaluate numeric expression safely. It is categorised as a Execute tool in the Multi-Agent Tools Platform MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on calc? +

Register the Multi-Agent Tools Platform MCP server in PolicyLayer and add a rule for calc: 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 Multi-Agent Tools Platform. Nothing to install.

What risk level is calc? +

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

Can I rate-limit calc? +

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

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

calc is provided by the Multi-Agent Tools Platform MCP server (kingrishabdugar/mcp_demo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.