chunk_text

THE RISK

Low Risk

Why chunk_text needs a policy

This is a data retrieval and transformation tool—it takes existing text as input and partitions it into chunks, which is a read-only operation with no modification, deletion, execution, or financial impact. The tool has no external side effects and does not interact with systems or data stores beyond simple in-memory text processing.

From the tool's definition Tool name 'chunk_text' and description 'Split text into overlapping chunks for LLM processing' indicates a text processing utility that retrieves and transforms data without side effects.

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

POLICY

How to control chunk_text

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

policy.json

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

chunk_text 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 Web Scraper — 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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All 62 Web Scraper tools →

Read tools on other servers

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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 chunk_text

What does the chunk_text tool do? +

Split text into overlapping chunks for LLM processing. It is categorised as a Read tool in the Web Scraper MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on chunk_text? +

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

What risk level is chunk_text? +

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

Can I rate-limit chunk_text? +

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

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

chunk_text is provided by the Web Scraper MCP server (imyourboyroy/webscrapertoolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Web Scraper tool call.

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

CHECK YOUR STACK →