compress_pdf_images · PDF Reader MCP Server MCP

WHAT IT DOES

What compress_pdf_images does on PDF Reader MCP Server

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

WHY IT NEEDS A POLICY

Why compress_pdf_images needs a policy

Based on the name, this tool likely compresses images within a PDF, which is a reversible modification (Write). The server context mentions optimization as a capability. With no description, confidence is reduced. Compression overwrites/modifies the PDF but is not necessarily irreversible if originals are preserved — however, lossy compression could be considered partially destructive.

From the tool's definition Tool name 'compress_pdf_images' and server description mentions 'optimization' capabilities. Description is empty, providing no further detail.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

compress_pdf_images Rate-limited

compress_pdf_images 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": {
    "compress_pdf_images": {
      "limits": [
        {
          "counter": "compress_pdf_images_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 PDF Reader MCP Server, so you can run agents against it safely.

FAQ

Questions about compress_pdf_images

What does the compress_pdf_images tool do? +

compress_pdf_images. It is categorised as a Write tool in the PDF Reader 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 compress_pdf_images? +

Register the PDF Reader MCP Server MCP server in PolicyLayer and add a rule for compress_pdf_images: 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 PDF Reader MCP Server. Nothing to install.

What risk level is compress_pdf_images? +

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

Can I rate-limit compress_pdf_images? +

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

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

compress_pdf_images is provided by the PDF Reader MCP Server MCP server (lihongwen/pdfreadermcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.