AI agents call list_notebooks to retrieve information from Evernote MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries notebook metadata from the user's Evernote account. It performs no write, delete, or execute operations. The only risk is information disclosure of the user's notebook organization, which is low severity. Confidence is high because the operation is clearly read-only.
From the tool's definition Tool name is 'list_notebooks' and description states 'List all notebooks in the Evernote account' — a straightforward retrieval operation with no modification, deletion, or side effects.
Documented attack patterns abuse exactly the kind of access list_notebooks gives an agent:
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_notebooks:
{
"version": "1",
"default": "deny",
"tools": {
"list_notebooks": {}
}
}list_notebooks is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all notebooks in the Evernote account. It is categorised as a Read tool in the Evernote MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Evernote MCP Server MCP server in PolicyLayer and add a rule for list_notebooks: 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.
list_notebooks is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_notebooks 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.
Set action: deny in the PolicyLayer policy for list_notebooks. 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.
list_notebooks 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.
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.
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52 Evernote MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.