generate_uuid · MCP Demo Application MCP: Risk & Policy

WHAT IT DOES

What generate_uuid does on MCP Demo Application

AI agents use generate_uuid to create or update resources in MCP Demo Application — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Demo Application environment.

WHY IT NEEDS A POLICY

Why generate_uuid needs a policy

An AI agent can call generate_uuid faster than any human can review — one bad instruction and it creates or modifies resources in MCP Demo Application by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_uuid Rate-limited

generate_uuid stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_uuid": {
      "limits": [
        {
          "counter": "generate_uuid_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about generate_uuid

What does the generate_uuid tool do? +

Generate a random UUID (Universally Unique Identifier). It is categorised as a Write tool in the MCP Demo Application MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_uuid? +

Register the MCP Demo Application MCP server in PolicyLayer and add a rule for generate_uuid: 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 Demo Application. Nothing to install.

What risk level is generate_uuid? +

generate_uuid is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit generate_uuid? +

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

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

generate_uuid is provided by the MCP Demo Application MCP server (mic-havock/model-context-protocol). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.