Search notes by keyword
AI agents call search_notes to retrieve information from Notes 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 filters data (notes) based on search criteria but does not create, modify, delete, or execute any external operations. It has no persistent side effects and does not commit any financial or destructive actions. The capability is limited to reading and returning matching results, making it a Read category tool with low severity risk.
From the tool's definition Tool performs a search operation by keyword over existing notes with no side effects. The description explicitly states 'Search notes by keyword' indicating a query operation.
Attacks that exploit this kind of access
Search notes by keyword. It is categorised as a Read tool in the Notes MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Notes MCP Server MCP server in PolicyLayer and add a rule for search_notes: 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 Notes MCP Server. Nothing to install.
search_notes 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 search_notes 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 search_notes. 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.
search_notes is provided by the Notes MCP Server MCP server (prem2230/mcpserver). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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