download_pdf

THE RISK

Medium Risk

Why download_pdf needs a policy

This tool fetches a remote PDF and writes it to the local filesystem. It creates new files but does not delete or overwrite existing data irreversibly, making Write the most appropriate category. Medium severity because it can introduce arbitrary remote content onto the local system, but it is reversible (the file can be deleted).

From the tool's definition Download a PDF from a URL and save it to the PDF agent home directory

Documented attack patterns abuse exactly the kind of access download_pdf gives an agent:

POLICY

How to control download_pdf

PolicyLayer is an MCP gateway — it sits between your AI agents and PDF Agent MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for download_pdf:

policy.json

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

download_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.

Create a free account and register PDF Agent MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More PDF Agent MCP tools

Read get_pdf_images Extract specific pages or page ranges from a PDF as images for visual analysis. Essential Read get_pdf_metadata Extract metadata and basic information from a PDF file, including page count, file size, c Read get_pdf_outline Extract the table of contents (TOC) or outline/bookmarks structure from a PDF file. Return Read get_pdf_text Extract text from specific pages or page ranges of a PDF file using native text extraction Read search_multiple_pdfs Search for text patterns across multiple PDF files in parallel. Processes files concurrent Read search_pdf Search for text patterns (including regex) within a PDF file and return matching pages wit

All 7 PDF Agent MCP tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about download_pdf

What does the download_pdf tool do? +

Download a PDF from a URL and save it to the PDF agent home directory. Downloads to a specified subfolder (default:. It is categorised as a Write tool in the PDF Agent MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on download_pdf? +

Register the PDF Agent MCP server in PolicyLayer and add a rule for download_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 PDF Agent MCP. Nothing to install.

What risk level is download_pdf? +

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

Can I rate-limit download_pdf? +

Yes. Add a rate_limit block to the download_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 download_pdf completely? +

Set action: deny in the PolicyLayer policy for download_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 download_pdf? +

download_pdf is provided by the PDF Agent MCP server (vlad-ds/pdf-agent-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every PDF Agent MCP tool call.

Start from PDF Agent MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →