delete_folder

THE RISK

Critical Risk

Why delete_folder needs a policy

This tool permanently removes a folder and its contents from an Obsidian vault without possibility of reversal through the tool interface. Deletion operations are categorized as Destructive.

From the tool's definition Tool name 'delete_folder' and description 'Deletes a folder within your Obsidian Vault' explicitly indicates irreversible deletion of data.

Documented attack patterns abuse exactly the kind of access delete_folder gives an agent:

POLICY

How to control delete_folder

PolicyLayer is an MCP gateway — it sits between your AI agents and Obsidian MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_folder:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_folder"
  ]
}

delete_folder disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Obsidian MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Obsidian MCP Server tools

Destructive delete_file Deletes a file within your Obsidian Vault. Provide the Write create_file Creates a new file with the specified content at the given path within your Obsidian Vault Write create_folder Creates a folder within your Obsidian Vault. Provide the Write create_link Creates an Obsidian wikilink from one note to another (e.g., Write edit_file Edits a specific range of lines within a file in your Obsidian Vault. Replaces the content Read count_entries Counts the number of indexed notes and chunks in your Obsidian Vault Read list_files Lists files and sub-folders within a specified directory of your Obsidian Vault. Use Read read_file Reads the full content of a specific note or file within your Obsidian Vault. Provide the

All 10 Obsidian MCP Server tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Obsidian MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about delete_folder

What does the delete_folder tool do? +

Deletes a folder within your Obsidian Vault. Provide the. It is categorised as a Destructive tool in the Obsidian MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_folder? +

Register the Obsidian MCP Server MCP server in PolicyLayer and add a rule for delete_folder: 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 Obsidian MCP Server. Nothing to install.

What risk level is delete_folder? +

delete_folder is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_folder? +

Yes. Add a rate_limit block to the delete_folder 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 delete_folder completely? +

Set action: deny in the PolicyLayer policy for delete_folder. 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 delete_folder? +

delete_folder is provided by the Obsidian MCP Server MCP server (minhao-zhang/obsidian-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Obsidian MCP Server tool call.

Start from Obsidian MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →