Low Risk

extract_links

Extract all links from PDF with comprehensive filtering and analysis options

How to control extract_links ↓

What extract_links does on MCP PDF

AI agents call extract_links to retrieve information from MCP PDF without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why extract_links needs a policy

This tool retrieves hyperlinks and URL data from PDF documents without creating, modifying, deleting, or executing any operations. It is a passive read operation that poses minimal security risk, as the worst outcome would be exposure of URLs already present in the document.

From the tool's definition Tool name 'extract_links' and description 'Extract all links from PDF' indicate data retrieval with no modification. The word 'extract' combined with 'analysis options' suggests querying and reading existing PDF content.

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

How to control extract_links

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

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "extract_links": {}
  }
}

extract_links is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

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

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Questions about extract_links

What does the extract_links tool do? +

Extract all links from PDF with comprehensive filtering and analysis options. It is categorised as a Read tool in the MCP PDF MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on extract_links? +

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

What risk level is extract_links? +

extract_links is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit extract_links? +

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

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

extract_links is provided by the MCP PDF MCP server (rsp2k/mcp-pdf). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP PDF tool call.

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

Free to start. No card required.

46 MCP PDF tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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