AI agents call find_notes_by_title to retrieve information from Bear Notes MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves or queries data from the Bear Notes app without creating, modifying, deleting, or executing any operations. It has no side effects—it simply searches for notes matching a title pattern. This is a classic Read operation. Severity is low because the worst-case misuse would be unauthorized information disclosure of the user's own notes, with no destructive, financial, or code-execution implications.
From the tool's definition Tool name 'find_notes_by_title' and description 'Find notes by title' indicate a search/retrieval operation.
Documented attack patterns abuse exactly the kind of access find_notes_by_title gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Bear Notes MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for find_notes_by_title:
{
"version": "1",
"default": "deny",
"tools": {
"find_notes_by_title": {}
}
}find_notes_by_title is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Find notes by title. It is categorised as a Read tool in the Bear Notes MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Bear Notes MCP Server MCP server in PolicyLayer and add a rule for find_notes_by_title: 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 Bear Notes MCP Server. Nothing to install.
find_notes_by_title 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_notes_by_title 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_notes_by_title. 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_notes_by_title is provided by the Bear Notes MCP Server MCP server (netologist/mcp-bear-notes). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Bear Notes 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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7 Bear Notes MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.