obsidian_create_note_in_app · Mcp Apple Obsidian MCP

WHAT IT DOES

What obsidian_create_note_in_app does on Mcp Apple Obsidian

AI agents use obsidian_create_note_in_app to create or update resources in Mcp Apple Obsidian — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Apple Obsidian environment.

WHY IT NEEDS A POLICY

Why obsidian_create_note_in_app needs a policy

The tool creates new notes, which is a Write operation (creates data reversibly). Severity is medium because while note creation itself is not destructive, an AI agent could spam the vault with numerous unwanted notes, degrade vault organization, or create notes containing sensitive information. The operation is reversible (notes can be deleted), preventing a critical classification.

From the tool's definition Tool name contains 'create_note' and description states 'Create a new note using Obsidian's URI scheme.' This is a reversible write operation that adds new data to the vault.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

obsidian_create_note_in_app Rate-limited

obsidian_create_note_in_app 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "obsidian_create_note_in_app": {
      "limits": [
        {
          "counter": "obsidian_create_note_in_app_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Apple Obsidian, so you can run agents against it safely.

FAQ

Questions about obsidian_create_note_in_app

What does the obsidian_create_note_in_app tool do? +

Create a new note using Obsidian's URI scheme. It is categorised as a Write tool in the Mcp Apple Obsidian MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on obsidian_create_note_in_app? +

Register the Mcp Apple Obsidian MCP server in PolicyLayer and add a rule for obsidian_create_note_in_app: 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 Mcp Apple Obsidian. Nothing to install.

What risk level is obsidian_create_note_in_app? +

obsidian_create_note_in_app is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit obsidian_create_note_in_app? +

Yes. Add a rate_limit block to the obsidian_create_note_in_app 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.

How do I block obsidian_create_note_in_app completely? +

Set action: deny in the PolicyLayer policy for obsidian_create_note_in_app. 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.

What MCP server provides obsidian_create_note_in_app? +

obsidian_create_note_in_app is provided by the Mcp Apple Obsidian MCP server (rex/mcp-apple-obsidian). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.