Create a new note in Apple Notes. Body accepts plain text (line breaks preserved) or HTML.
AI agents use create_note to create or update resources in Apple Notes — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Apple Notes environment.
Creating a note is a write operation that modifies the Notes application state by adding new data. It is reversible (via delete_note), so it does not qualify as Destructive. The medium severity reflects that an AI agent could create numerous unwanted notes or potentially craft notes containing misinformation, but the impact is limited compared to data destruction or financial operations.
From the tool's definition Tool description states 'Create a new note in Apple Notes', which is a reversible create operation. The sibling tools include 'delete_note' and 'update_note', confirming this is a write-capable system.
Attacks that exploit this kind of access
Create a new note in Apple Notes. Body accepts plain text (line breaks preserved) or HTML. It is categorised as a Write tool in the Apple Notes MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Apple Notes MCP server in PolicyLayer and add a rule for create_note: 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 Apple Notes. Nothing to install.
create_note is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_note 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 create_note. 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.
create_note is provided by the Apple Notes MCP server (simantaturja/apple-notes-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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