radarr.movie_add · Arr Stack MCP: Risk & Policy

WHAT IT DOES

What radarr.movie_add does on Arr Stack

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

WHY IT NEEDS A POLICY

Why radarr.movie_add needs a policy

The tool performs a reversible write operation—adding movies to Radarr's database. While not destructive (the action can be undone by removing the movie), and not financial, it modifies system state by expanding the user's media library. The description is empty, which reduces confidence slightly, but the name and context (Radarr's function) clearly indicate data creation.

From the tool's definition Tool name 'radarr.movie_add' indicates an add/create operation. Radarr is a movie collection manager, so 'movie_add' creates or imports new movie entries into the system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

radarr.movie_add Rate-limited

radarr.movie_add 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": {
    "radarr.movie_add": {
      "limits": [
        {
          "counter": "radarr.movie_add_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 Arr Stack, so you can run agents against it safely.

FAQ

Questions about radarr.movie_add

What does the radarr.movie_add tool do? +

radarr.movie_add. It is categorised as a Write tool in the Arr Stack MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on radarr.movie_add? +

Register the Arr Stack MCP server in PolicyLayer and add a rule for radarr.movie_add: 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 Arr Stack. Nothing to install.

What risk level is radarr.movie_add? +

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

Can I rate-limit radarr.movie_add? +

Yes. Add a rate_limit block to the radarr.movie_add 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 radarr.movie_add completely? +

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

radarr.movie_add is provided by the Arr Stack MCP server (new-usemame/arr-stack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.