edit_comment · Mnemosyne MCP: Risk & Policy

WHAT IT DOES

What edit_comment does on Mnemosyne MCP

AI agents use edit_comment 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 edit_comment needs a policy

The tool modifies comments, which is a reversible write operation. However, confidence is moderate (0.7) because the description is empty, leaving some ambiguity about scope and potential side effects. If comments are critical to the knowledge graph structure or have audit implications, severity could be higher.

From the tool's definition Tool name 'edit_comment' indicates modification of existing data. Server context shows this is part of a knowledge graph management system with graph operations and data management capabilities.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

edit_comment Rate-limited

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

FAQ

Questions about edit_comment

What does the edit_comment tool do? +

edit_comment. 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 edit_comment? +

Register the Mnemosyne MCP server in PolicyLayer and add a rule for edit_comment: 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 edit_comment? +

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

Can I rate-limit edit_comment? +

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

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

edit_comment 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.