list_note_versions

THE RISK

Low Risk

Why list_note_versions needs a policy

This tool retrieves historical metadata about a note's versions without creating, modifying, deleting, or executing any operations. It is a passive read-only query. The 'Premium only' restriction is a feature limitation, not a security escalation. The blast radius of misuse is minimal—an agent could only view historical note data, which is informational only.

From the tool's definition Tool name 'list_note_versions' and description 'List previous versions of a note' indicates a retrieval operation with no modification or deletion capability.

Documented attack patterns abuse exactly the kind of access list_note_versions gives an agent:

POLICY

How to control list_note_versions

PolicyLayer is an MCP gateway — it sits between your AI agents and Evernote MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_note_versions:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_note_versions": {}
  }
}

list_note_versions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Evernote MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_note_versions

What does the list_note_versions tool do? +

List previous versions of a note (Premium only). It is categorised as a Read tool in the Evernote MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_note_versions? +

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

What risk level is list_note_versions? +

list_note_versions is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_note_versions? +

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

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

list_note_versions is provided by the Evernote MCP Server MCP server (kensou24/evernote-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Evernote MCP Server tool call.

Start from Evernote MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →