extract_links

THE RISK

Low Risk

Why extract_links needs a policy

This tool retrieves and parses link data from web page HTML content. It performs read-only analysis without side effects, state changes, or irreversible actions. The operation is a simple extraction/enumeration task typical of web scraping and analysis workflows. No financial, destructive, or code-execution risks are present.

From the tool's definition Tool name is 'extract_links' and description states it 'Extract[s] all links from a HTML content of web page URL' — a pure data retrieval operation with no modification, deletion, or execution of external operations.

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

POLICY

How to control extract_links

PolicyLayer is an MCP gateway — it sits between your AI agents and ReviewWebsite MCP Server, 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.

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

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about extract_links

What does the extract_links tool do? +

Extract all links from a HTML content of web page URL using ReviewWeb.site API. It is categorised as a Read tool in the ReviewWebsite MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on extract_links? +

Register the ReviewWebsite MCP Server 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 ReviewWebsite MCP Server. 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 ReviewWebsite MCP Server MCP server (mrgoonie/reviewwebsite-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every ReviewWebsite MCP Server tool call.

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

CHECK YOUR STACK →