calculate · Example Mcp Server Sse MCP: Risk & Policy

WHAT IT DOES

What calculate does on Example Mcp Server Sse

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

WHY IT NEEDS A POLICY

Why calculate needs a policy

The tool does two things: compute an arithmetic result (Read-like) and persist it to session history (Write). Per the rules, the more severe category applies, making this Write. The blast radius is low since it only stores arithmetic results in a session-scoped history with no external or irreversible effects.

From the tool's definition 'perform a basic arithmetic calculation and persist it in session history' — the word 'persist' indicates a write side-effect (storing the result in session history)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

calculate Rate-limited

calculate 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": {
    "calculate": {
      "limits": [
        {
          "counter": "calculate_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 Example Mcp Server Sse, so you can run agents against it safely.

FAQ

Questions about calculate

What does the calculate tool do? +

Perform a basic arithmetic calculation and persist it in session history. It is categorised as a Write tool in the Example Mcp Server Sse MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on calculate? +

Register the Example Mcp Server Sse MCP server in PolicyLayer and add a rule for calculate: 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 Example Mcp Server Sse. Nothing to install.

What risk level is calculate? +

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

Can I rate-limit calculate? +

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

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

calculate is provided by the Example Mcp Server Sse MCP server (yigitkonur/example-mcp-sse). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.