Create a new note in a specific folder and get back the note with its identifier
AI agents use notes-create-note to create or update resources in Notes MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Notes MCP environment.
This tool creates new data (a note) in the Notes application, which is a reversible write operation. It does not retrieve data (Read), execute arbitrary code (Execute), permanently delete data (Destructive), or involve financial transactions (Financial).
From the tool's definition Tool description states 'Create a new note in a specific folder' — this is a data creation operation that modifies the Notes application state by adding a new note.
Documented attack patterns abuse exactly the kind of access notes-create-note gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Notes MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for notes-create-note:
{
"version": "1",
"default": "deny",
"tools": {
"notes-create-note": {
"limits": [
{
"counter": "notes-create-note_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}notes-create-note stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Create a new note in a specific folder and get back the note with its identifier. It is categorised as a Write tool in the Notes MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Notes MCP server in PolicyLayer and add a rule for notes-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 Notes MCP. Nothing to install.
notes-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 notes-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 notes-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.
notes-create-note is provided by the Notes MCP server (krasun/notes-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Notes MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
6 Notes MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.