batch_extract

THE RISK

Low Risk

Why batch_extract needs a policy

This tool retrieves or queries web content across multiple URLs and transforms it into structured format. There are no side effects that modify, delete, execute code, or commit financial transactions. The operation is purely extractive and read-only, making it the lowest severity category.

From the tool's definition Tool name 'batch_extract' and description 'Extract content from multiple URLs in a single operation' indicate data retrieval with no modification, deletion, or execution capabilities.

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

POLICY

How to control batch_extract

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "batch_extract": {}
  }
}

batch_extract 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 MCP Web Scrape — 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

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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 →
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FAQ

Questions about batch_extract

What does the batch_extract tool do? +

Extract content from multiple URLs in a single operation. It is categorised as a Read tool in the MCP Web Scrape MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on batch_extract? +

Register the MCP Web Scrape MCP server in PolicyLayer and add a rule for batch_extract: 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 Web Scrape. Nothing to install.

What risk level is batch_extract? +

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

Can I rate-limit batch_extract? +

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

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

batch_extract is provided by the MCP Web Scrape MCP server (mukul975/mcp-web-scrape). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Web Scrape tool call.

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

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