update_printer_paper · 智睦云打印 MCP: Risk & Policy

WHAT IT DOES

What update_printer_paper does on 智睦云打印

AI agents use update_printer_paper to create or update resources in 智睦云打印 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 智睦云打印 environment.

WHY IT NEEDS A POLICY

Why update_printer_paper needs a policy

The tool modifies an existing resource (a roaming task's paper size settings) reversibly. This is a Write operation because changes can be undone by updating again to different settings. Severity is medium rather than low because misconfiguration could cause printing failures or waste, and medium rather than high because it's non-destructive and limited to a single printing parameter.

From the tool's definition Tool description states 'Update paper size for an existing roaming task' — update is a write operation that modifies configuration/settings of an existing roaming print task.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_printer_paper Rate-limited

update_printer_paper 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": {
    "update_printer_paper": {
      "limits": [
        {
          "counter": "update_printer_paper_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 智睦云打印, so you can run agents against it safely.

FAQ

Questions about update_printer_paper

What does the update_printer_paper tool do? +

Update paper size for an existing roaming task using a preset name or custom dimensions in millimeters. It is categorised as a Write tool in the 智睦云打印 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_printer_paper? +

Register the 智睦云打印 MCP server in PolicyLayer and add a rule for update_printer_paper: 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 智睦云打印. Nothing to install.

What risk level is update_printer_paper? +

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

Can I rate-limit update_printer_paper? +

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

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

update_printer_paper is provided by the 智睦云打印 MCP server (zimsoft/webprinter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.