add_series · Sonarr MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_series does on Sonarr MCP Server

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

WHY IT NEEDS A POLICY

Why add_series needs a policy

The add_series tool creates new records in the Sonarr database—a reversible modification operation. While the server context mentions the tool enables 'adding, updating, and deleting' with 'detailed control,' the add_series tool itself performs creation only.

From the tool's definition Tool adds a TV series to Sonarr, creating a new data record in the collection. Description states 'Add a TV series' which is a create operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_series Rate-limited

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": {
    "add_series": {
      "limits": [
        {
          "counter": "add_series_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about add_series

What does the add_series tool do? +

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

How do I enforce a policy on add_series? +

Register the Sonarr MCP Server MCP server in PolicyLayer and add a rule for 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 Sonarr MCP Server. Nothing to install.

What risk level is add_series? +

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

Can I rate-limit add_series? +

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

Set action: deny in the PolicyLayer policy for 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 add_series? +

add_series is provided by the Sonarr MCP Server MCP server (micky-devs/sonarr-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.