create-note · Notes MCP Server MCP: Risk & Policy

WHAT IT DOES

What create-note does on Notes MCP Server

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

WHY IT NEEDS A POLICY

Why create-note needs a policy

Creating a note is a write operation that adds data to the system. It is reversible (notes can be deleted or updated) and has limited blast radius—even if an AI agent creates unwanted notes, they can be easily removed. This is clearly Write rather than Destructive (which would require irreversible deletion/overwriting). The low severity reflects the low risk of misuse for note creation alone.

From the tool's definition Tool name is 'create-note' and description states 'Create a new note.' This is a reversible write operation that creates new data without destroying existing data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-note Rate-limited

create-note 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-note": {
      "limits": [
        {
          "counter": "create-note_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 Notes MCP Server, so you can run agents against it safely.

FAQ

Questions about create-note

What does the create-note tool do? +

Create a new note. Aliases: createNote, create_note. It is categorised as a Write tool in the Notes 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-note? +

Register the Notes MCP Server MCP server in PolicyLayer and add a rule for create-note: 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 Notes MCP Server. Nothing to install.

What risk level is create-note? +

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

Can I rate-limit create-note? +

Yes. Add a rate_limit block to the create-note 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-note completely? +

Set action: deny in the PolicyLayer policy for create-note. 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-note? +

create-note is provided by the Notes MCP Server MCP server (surya07102000/notes-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.