create_memo_comment · Memos MCP: Risk & Policy

WHAT IT DOES

What create_memo_comment does on Memos

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

WHY IT NEEDS A POLICY

Why create_memo_comment needs a policy

This tool creates new comment data associated with a memo, which is a Write operation. It does not execute arbitrary code, delete data, move money, or cause irreversible changes. Comments can typically be edited or deleted later. Severity is low because misuse would only add unwanted comments, which are easily removable and have limited blast radius.

From the tool's definition Tool name 'create_memo_comment' and description indicate creation of a comment ("创建一个评论" = 'create a comment'). This is a reversible write operation that adds content to an existing memo.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_memo_comment Rate-limited

create_memo_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": {
    "create_memo_comment": {
      "limits": [
        {
          "counter": "create_memo_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 Memos, so you can run agents against it safely.

FAQ

Questions about create_memo_comment

What does the create_memo_comment tool do? +

在指定的备忘录下创建一个评论，提供内容和可见性设置. It is categorised as a Write tool in the Memos 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_memo_comment? +

Register the Memos MCP server in PolicyLayer and add a rule for create_memo_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 Memos. Nothing to install.

What risk level is create_memo_comment? +

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

Can I rate-limit create_memo_comment? +

Yes. Add a rate_limit block to the create_memo_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 create_memo_comment completely? +

Set action: deny in the PolicyLayer policy for create_memo_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 create_memo_comment? +

create_memo_comment is provided by the Memos MCP server (yuzhi-jiang/memos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.