sonarr_add_series · Homelab MCP: Risk & Policy

WHAT IT DOES

What sonarr_add_series does on Homelab

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

WHY IT NEEDS A POLICY

Why sonarr_add_series needs a policy

This tool creates a new entry in Sonarr (a TV series management application) and initiates a download. Adding a series is a reversible write operation (it can be removed later), and triggering an automatic download is an external operation, but the primary action is creating/writing data.

From the tool's definition Add a TV series to Sonarr and trigger an automatic episode download

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sonarr_add_series Rate-limited

sonarr_add_series 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": {
    "sonarr_add_series": {
      "limits": [
        {
          "counter": "sonarr_add_series_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 Homelab, so you can run agents against it safely.

FAQ

Questions about sonarr_add_series

What does the sonarr_add_series tool do? +

Add a TV series to Sonarr and trigger an automatic episode download. It is categorised as a Write tool in the Homelab MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sonarr_add_series? +

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

What risk level is sonarr_add_series? +

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

Can I rate-limit sonarr_add_series? +

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

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

sonarr_add_series is provided by the Homelab MCP server (nainounen/homelab-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.