test_tool · Promethean OS MCP: Risk & Policy

WHAT IT DOES

What test_tool does on Promethean OS MCP

AI agents call test_tool as a supporting operation in Promethean OS MCP workflows.

WHY IT NEEDS A POLICY

Why test_tool needs a policy

The description provides no actionable information about what this tool does. It cannot be reliably classified into Read, Write, Execute, Destructive, Financial, or any meaningful category. Confidence is very low due to the empty/uninformative description. Defaulting to Other with low severity as a placeholder.

From the tool's definition Tool description is 'A simple test tool' — uninformative and does not indicate any specific action or side effect.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

test_tool Rate-limited

test_tool gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "test_tool": {
      "limits": [
        {
          "counter": "test_tool_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Promethean OS MCP, so you can run agents against it safely.

FAQ

Questions about test_tool

What does the test_tool tool do? +

A simple test tool. It is categorised as a Other tool in the Promethean OS MCP MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on test_tool? +

Register the Promethean OS MCP server in PolicyLayer and add a rule for test_tool: 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 Promethean OS MCP. Nothing to install.

What risk level is test_tool? +

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

Can I rate-limit test_tool? +

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

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

test_tool is provided by the Promethean OS MCP server (octave-commons/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.