create_account_note · Vitally MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_account_note does on Vitally MCP Server

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

WHY IT NEEDS A POLICY

Why create_account_note needs a policy

This tool creates new notes within the Vitally account management system. Creating notes is a reversible write operation that modifies account data but does not delete, execute code, or move money. The severity is medium because note creation could be misused to add misleading or spam notes to customer accounts, affecting data integrity and customer communication, but the action is reversible via deletion or editing.

From the tool's definition Tool name 'create_account_note' and description 'create a new note for an account' indicate a create operation that adds new data to the system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_account_note Rate-limited

create_account_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_account_note": {
      "limits": [
        {
          "counter": "create_account_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 Vitally MCP Server, so you can run agents against it safely.

FAQ

Questions about create_account_note

What does the create_account_note tool do? +

Vitally tool to create a new note for an account. It is categorised as a Write tool in the Vitally 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_account_note? +

Register the Vitally MCP Server MCP server in PolicyLayer and add a rule for create_account_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 Vitally MCP Server. Nothing to install.

What risk level is create_account_note? +

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

Can I rate-limit create_account_note? +

Yes. Add a rate_limit block to the create_account_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_account_note completely? +

Set action: deny in the PolicyLayer policy for create_account_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_account_note? +

create_account_note is provided by the Vitally MCP Server MCP server (johnjjung/vitally-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.