create_collection · Mcp Plex MCP: Risk & Policy

WHAT IT DOES

What create_collection does on Mcp Plex

AI agents use create_collection to create or update resources in Mcp Plex — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Plex environment.

WHY IT NEEDS A POLICY

Why create_collection needs a policy

This tool creates new metadata objects (collections) within a user's Plex library. While reversible (collections can be deleted via the sibling tool 'delete_collection'), it modifies the library structure and state. It does not execute arbitrary code, delete data irreversibly, or move money, making Write the appropriate category.

From the tool's definition Tool name 'create_collection' and description 'Create a new regular collection in a Plex library' indicate creation of new data structures within Plex's library management system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_collection Rate-limited

create_collection stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_collection": {
      "limits": [
        {
          "counter": "create_collection_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Plex, so you can run agents against it safely.

FAQ

Questions about create_collection

What does the create_collection tool do? +

Create a new regular collection in a Plex library. It is categorised as a Write tool in the Mcp Plex MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_collection? +

Register the Mcp Plex MCP server in PolicyLayer and add a rule for create_collection: 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 Plex. Nothing to install.

What risk level is create_collection? +

create_collection is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_collection? +

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

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

create_collection is provided by the Mcp Plex MCP server (obrien-matthew/mcp-plex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.