AI agents call note_list to retrieve information from Tpm without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and queries note metadata (id, created_at, preview) without creating, modifying, or deleting data. It is purely informational, listing existing notes for display purposes. This is a classic Read operation with minimal risk—even if misused by an agent, it cannot damage or alter project data.
From the tool's definition Tool name 'note_list' and description states it 'List notes for an entity. Returns id, created_at, preview'. This is a retrieval operation with no side effects.
Attacks that exploit this kind of access
PROJECT MANAGEMENT (TPM): List notes for an entity. Returns id, created_at, preview (first 100 chars). Use note_get for full content. It is categorised as a Read tool in the Tpm MCP Server, which means it retrieves data without modifying state.
Register the Tpm MCP server in PolicyLayer and add a rule for note_list: 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 Tpm. Nothing to install.
note_list 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 note_list 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 note_list. 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.
note_list is provided by the Tpm MCP server (urjitbhatia/tpm-mcp). 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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