convert_number_base

THE RISK

Low Risk

Why convert_number_base needs a policy

This tool performs a pure mathematical conversion between number bases with no side effects, no data modification, and no external interactions. It simply transforms input and returns a result.

From the tool's definition Convert numbers between different bases (binary, octal, decimal, hexadecimal)

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

POLICY

How to control convert_number_base

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

policy.json

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

convert_number_base 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 IT Tools MCP 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 convert_number_base

What does the convert_number_base tool do? +

Convert numbers between different bases (binary, octal, decimal, hexadecimal). It is categorised as a Read tool in the IT Tools MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on convert_number_base? +

Register the IT Tools MCP Server MCP server in PolicyLayer and add a rule for convert_number_base: 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 IT Tools MCP Server. Nothing to install.

What risk level is convert_number_base? +

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

Can I rate-limit convert_number_base? +

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

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

convert_number_base is provided by the IT Tools MCP Server MCP server (wrenchpilot/it-tools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every IT Tools MCP Server tool call.

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

CHECK YOUR STACK →