summarize_as_mermaid · Notemd MCP Server MCP: Risk & Policy

WHAT IT DOES

What summarize_as_mermaid does on Notemd MCP Server

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

WHY IT NEEDS A POLICY

Why summarize_as_mermaid needs a policy

This tool creates new Markdown/Mermaid diagram files or modifies existing files by adding generated summaries. While creation is reversible (files can be deleted or edited), it modifies the knowledge base state. It does not execute arbitrary code, delete data irreversibly, or move finances, so Write is the appropriate category.

From the tool's definition Tool 'summarize_as_mermaid' generates and creates Mermaid diagram content from source material. The description states it will 'Generate' output, which is a content creation action.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

summarize_as_mermaid Rate-limited

summarize_as_mermaid 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": {
    "summarize_as_mermaid": {
      "limits": [
        {
          "counter": "summarize_as_mermaid_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 Notemd MCP Server, so you can run agents against it safely.

FAQ

Questions about summarize_as_mermaid

What does the summarize_as_mermaid tool do? +

Generate a Mermaid mindmap summary from source content. It is categorised as a Write tool in the Notemd 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 summarize_as_mermaid? +

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

What risk level is summarize_as_mermaid? +

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

Can I rate-limit summarize_as_mermaid? +

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

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

summarize_as_mermaid is provided by the Notemd MCP Server MCP server (jacobinwwey/notemd-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.