should_approve_tool · Memex MCP: Risk & Policy

WHAT IT DOES

What should_approve_tool does on Memex

AI agents call should_approve_tool as a supporting operation in Memex workflows.

WHY IT NEEDS A POLICY

Why should_approve_tool needs a policy

The name suggests a validation or approval-check function, possibly returning a boolean about whether another tool should be approved — which would be a Read/query operation. However, with no description and given the server context (MCP gateway with tool validation), it could influence execution flow or act as a gatekeeper. Confidence is low due to empty description.

From the tool's definition Tool name is 'should_approve_tool'; description is empty or uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

should_approve_tool Rate-limited

should_approve_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": {
    "should_approve_tool": {
      "limits": [
        {
          "counter": "should_approve_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 Memex, so you can run agents against it safely.

FAQ

Questions about should_approve_tool

What does the should_approve_tool tool do? +

should_approve_tool. It is categorised as a Other tool in the Memex MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on should_approve_tool? +

Register the Memex MCP server in PolicyLayer and add a rule for should_approve_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 Memex. Nothing to install.

What risk level is should_approve_tool? +

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

Can I rate-limit should_approve_tool? +

Yes. Add a rate_limit block to the should_approve_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 should_approve_tool completely? +

Set action: deny in the PolicyLayer policy for should_approve_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 should_approve_tool? +

should_approve_tool is provided by the Memex MCP server (queflyhq/memex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.