crow_plex_libraries

THE RISK

Low Risk

Why crow_plex_libraries needs a policy

This tool retrieves and lists Plex library metadata without creating, modifying, or deleting any data. It is a read-only operation with minimal blast radius if misused by an AI agent—the worst case would be information disclosure about available media libraries, which is low-impact.

From the tool's definition Tool name 'crow_plex_libraries' and description 'List all Plex library sections' indicate a query/retrieval operation with no data modification or side effects.

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

POLICY

How to control crow_plex_libraries

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_plex_libraries:

policy.json

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

crow_plex_libraries 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 →

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 crow_plex_libraries

What does the crow_plex_libraries tool do? +

List all Plex library sections (Movies, TV Shows, Music, etc.). 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_plex_libraries? +

Register the Crow MCP server in PolicyLayer and add a rule for crow_plex_libraries: 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_plex_libraries? +

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

Can I rate-limit crow_plex_libraries? +

Yes. Add a rate_limit block to the crow_plex_libraries 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_plex_libraries completely? +

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

crow_plex_libraries 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.

CHECK YOUR STACK →