divide

THE RISK

Low Risk

Why divide needs a policy

This tool performs a pure arithmetic division operation with no side effects. It reads two input values, computes a result, and returns it. No data is written, executed, or destroyed. The zero-division guard confirms it is a safe, read-only computation.

From the tool's definition Divides a by b. Returns a tool error when b is zero.

Documented attack patterns abuse exactly the kind of access divide gives an agent:

POLICY

How to control divide

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP from Scratch Server, and nothing reaches the server without passing your rules. This is the rule we recommend for divide:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "divide": {}
  }
}

divide is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register MCP from Scratch Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about divide

What does the divide tool do? +

Divides a by b. Returns a tool error when b is zero. It is categorised as a Read tool in the MCP from Scratch Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on divide? +

Register the MCP from Scratch Server MCP server in PolicyLayer and add a rule for divide: 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 from Scratch Server. Nothing to install.

What risk level is divide? +

divide is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit divide? +

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

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

divide is provided by the MCP from Scratch Server MCP server (pguso/mcp-from-scratch). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP from Scratch Server tool call.

Start from MCP from Scratch Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →