async_tool · DIY Helper MCP Servers MCP: Risk & Policy

WHAT IT DOES

What async_tool does on DIY Helper MCP Servers

AI agents call async_tool as a supporting operation in DIY Helper MCP Servers workflows.

WHY IT NEEDS A POLICY

Why async_tool needs a policy

The description is completely empty and the name 'async_tool' is a generic technical term that gives no indication of the tool's purpose or function. Given the server context (DIY construction helper with calculators and code compliance tools), it could be a wrapper for asynchronous execution of other tools, but there is insufficient evidence to classify it into any specific risk category.

From the tool's definition Tool name is 'async_tool' with an empty description providing no information about what it does.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

async_tool Rate-limited

async_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": {
    "async_tool": {
      "limits": [
        {
          "counter": "async_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 DIY Helper MCP Servers, so you can run agents against it safely.

FAQ

Questions about async_tool

What does the async_tool tool do? +

async_tool. It is categorised as a Other tool in the DIY Helper MCP Servers MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on async_tool? +

Register the DIY Helper MCP Servers MCP server in PolicyLayer and add a rule for async_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 DIY Helper MCP Servers. Nothing to install.

What risk level is async_tool? +

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

Can I rate-limit async_tool? +

Yes. Add a rate_limit block to the async_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 async_tool completely? +

Set action: deny in the PolicyLayer policy for async_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 async_tool? +

async_tool is provided by the DIY Helper MCP Servers MCP server (jrszilard/diy-helper-mcp-servers). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.