crow_audiobookshelf_progress

THE RISK

Low Risk

Why crow_audiobookshelf_progress needs a policy

This tool queries the current state of audiobook listening progress across libraries. It retrieves data without creating, modifying, deleting, or executing any external operations. The blast radius of misuse is minimal — an AI agent could only learn about listening habits, which is information already accessible to the account holder. No destructive, financial, or irreversible actions are possible.

From the tool's definition Tool description states 'Get all items currently in progress' — a retrieval operation with no modification or side effects. The verb 'Get' and the passive observation of 'listening progress' indicate a read-only query.

Risk signalsBulk/mass operation — affects multiple targets

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

POLICY

How to control crow_audiobookshelf_progress

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_audiobookshelf_progress:

policy.json

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

crow_audiobookshelf_progress 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.

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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.
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 crow_audiobookshelf_progress

What does the crow_audiobookshelf_progress tool do? +

Get all items currently in progress (listening progress across all libraries). 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_audiobookshelf_progress? +

Register the Crow MCP server in PolicyLayer and add a rule for crow_audiobookshelf_progress: 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_audiobookshelf_progress? +

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

Can I rate-limit crow_audiobookshelf_progress? +

Yes. Add a rate_limit block to the crow_audiobookshelf_progress 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_audiobookshelf_progress completely? +

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

crow_audiobookshelf_progress 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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