create_shared_folder · Synology MCP Server MCP

WHAT IT DOES

What create_shared_folder does on Synology MCP Server

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

WHY IT NEEDS A POLICY

Why create_shared_folder needs a policy

This tool creates new shared folders on a Synology NAS, which is a reversible write operation that modifies the storage configuration and can expose data access paths. While not destructive (the action is reversible by deleting the folder), it has a high severity because misconfiguration or malicious use could create unintended data sharing paths, expose sensitive folders to unauthorized users, or consume storage…

From the tool's definition Tool name 'create_shared_folder' and description 'Create a new shared folder' explicitly indicates data creation. The [control] tag suggests administrative capability over NAS shared storage resources.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_shared_folder Rate-limited

create_shared_folder 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_shared_folder": {
      "limits": [
        {
          "counter": "create_shared_folder_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about create_shared_folder

What does the create_shared_folder tool do? +

Create a new shared folder. [control]. It is categorised as a Write tool in the Synology 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 create_shared_folder? +

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

What risk level is create_shared_folder? +

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

Can I rate-limit create_shared_folder? +

Yes. Add a rate_limit block to the create_shared_folder 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_shared_folder completely? +

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

create_shared_folder is provided by the Synology MCP Server MCP server (rafalr100/synology-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.