generate_label_pdf · UPS MCP Server MCP: Risk & Policy

WHAT IT DOES

What generate_label_pdf does on UPS MCP Server

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

WHY IT NEEDS A POLICY

Why generate_label_pdf needs a policy

Generating a label PDF is a write operation: it produces a new file/document resource that can be printed and used. It does not delete or irreversibly modify data (Destructive), execute arbitrary code (Execute), nor move money (Financial). While the actual shipping commitment is made by create_shipment, this tool commits the label to a printable form.

From the tool's definition Tool description states 'generate_label_pdf' 'Recover UPS shipping labels and generate a printable PDF' — this creates/produces a new document artifact (PDF output) based on existing shipment data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_label_pdf Rate-limited

generate_label_pdf 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_label_pdf": {
      "limits": [
        {
          "counter": "generate_label_pdf_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 UPS MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_label_pdf

What does the generate_label_pdf tool do? +

Recover UPS shipping labels and generate a printable PDF. Supports 1-up (single label centered) or 2-up (two labels side by side on one page). Labels are automatically oriented for 8.5x11 paper. It is categorised as a Write tool in the UPS MCP Server 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_label_pdf? +

Register the UPS MCP Server MCP server in PolicyLayer and add a rule for generate_label_pdf: 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 UPS MCP Server. Nothing to install.

What risk level is generate_label_pdf? +

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

Can I rate-limit generate_label_pdf? +

Yes. Add a rate_limit block to the generate_label_pdf 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_label_pdf completely? +

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

generate_label_pdf is provided by the UPS MCP Server MCP server (roscoej/ups-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.