AI agents call find_note_counts 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 is a retrieval operation that queries metadata (note counts) across notebooks and tags. It has no side effects, does not modify or delete data, and does not execute external operations. It fits the Read category definition of 'retrieves or queries data; no side effects'. The severity is low because misuse would only expose organizational metadata with no destructive or operational consequences.
From the tool's definition Tool retrieves and reports note counts for notebooks and tags without modifying, deleting, or creating any data. Description explicitly states 'Get note counts' which is a read operation.
Documented attack patterns abuse exactly the kind of access find_note_counts 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 find_note_counts:
{
"version": "1",
"default": "deny",
"tools": {
"find_note_counts": {}
}
}find_note_counts is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get note counts for each notebook and tag. 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 find_note_counts: 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.
find_note_counts 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 find_note_counts 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 find_note_counts. 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.
find_note_counts 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.