crow_bookstack_chapters

THE RISK

Low Risk

Why crow_bookstack_chapters needs a policy

This tool queries and returns a list of chapters from a BookStack book. It is a read-only operation that retrieves information without creating, modifying, deleting, or executing anything. The action is non-destructive and has minimal security impact if misused by an AI agent.

From the tool's definition Tool name 'crow_bookstack_chapters' and description 'List chapters in a BookStack book' indicate a retrieval operation with no modification or side effects.

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

POLICY

How to control crow_bookstack_chapters

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

policy.json

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

crow_bookstack_chapters 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 Crow — 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 →

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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.
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FAQ

Questions about crow_bookstack_chapters

What does the crow_bookstack_chapters tool do? +

List chapters in a BookStack book. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on crow_bookstack_chapters? +

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

What risk level is crow_bookstack_chapters? +

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

Can I rate-limit crow_bookstack_chapters? +

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

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

crow_bookstack_chapters is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Crow tool call.

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

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