move_folder · Mnemosyne MCP: Risk & Policy

WHAT IT DOES

What move_folder does on Mnemosyne MCP

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

WHY IT NEEDS A POLICY

Why move_folder needs a policy

Moving a folder within a knowledge graph structure is a Write operation—it modifies the graph's organization but is reversible (can be moved again). It does not delete data (not Destructive), execute arbitrary code (not Execute), or involve financial transactions (not Financial).

From the tool's definition Tool name 'move_folder' indicates a folder/node reorganization operation within a knowledge graph. The broader server context confirms this is a graph management operation (alongside create_folder, create_graph, delete).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

move_folder Rate-limited

move_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": {
    "move_folder": {
      "limits": [
        {
          "counter": "move_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 Mnemosyne MCP, so you can run agents against it safely.

FAQ

Questions about move_folder

What does the move_folder tool do? +

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

How do I enforce a policy on move_folder? +

Register the Mnemosyne MCP server in PolicyLayer and add a rule for move_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 Mnemosyne MCP. Nothing to install.

What risk level is move_folder? +

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

Can I rate-limit move_folder? +

Yes. Add a rate_limit block to the move_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 move_folder completely? +

Set action: deny in the PolicyLayer policy for move_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 move_folder? +

move_folder is provided by the Mnemosyne MCP server (sophia-labs/mnemosyne-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.