modulo · Jokes MCP Server MCP: Risk & Policy

WHAT IT DOES

What modulo does on Jokes MCP Server

AI agents invoke modulo to trigger actions in Jokes MCP 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 modulo needs a policy

The tool executes a arithmetic operation (modulo/remainder) on input values. It has no side effects, doesn't read or write persistent data, and purely computes a result. 'Execute' fits best as it runs a computation whose result depends on arguments. Severity is low since it's a basic math operation with minimal blast radius.

From the tool's definition 'Find remainder of two numbers' — performs a mathematical computation (modulo operation) on provided arguments

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

modulo Rate-limited

modulo 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": {
    "modulo": {
      "limits": [
        {
          "counter": "modulo_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 Jokes MCP Server, so you can run agents against it safely.

FAQ

Questions about modulo

What does the modulo tool do? +

Find remainder of two numbers. It is categorised as a Execute tool in the Jokes MCP 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 modulo? +

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

What risk level is modulo? +

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

Can I rate-limit modulo? +

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

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

modulo is provided by the Jokes MCP Server MCP server (nikhita196/mcpserver1). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.