Critical Risk →

delete_folder

Delete all files in a folder recursively. By default moves to .trash-http-mcp/ (soft delete). Use permanent=true for irreversible deletion. Empty folders remain (API limitation).

How to control delete_folder ↓

What delete_folder does on Obsidian HTTP MCP

AI agents call delete_folder to permanently remove resources in Obsidian HTTP MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

Critical Risk

Why delete_folder needs a policy

This tool irreversibly removes data when used with permanent=true, meeting the definition of Destructive category. Even the soft-delete default (moving to trash) is destructive in nature as it removes files from their original location. The recursive deletion of entire folder contents creates significant blast radius if an AI agent targets the wrong directory.

From the tool's definition Tool performs 'Delete all files in a folder recursively' with option for 'irreversible deletion' via permanent=true parameter. This is an explicit destructive operation that cannot be undone when permanent flag is set.

Risk signalsBulk/mass operation — affects multiple targets

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

How to control delete_folder

PolicyLayer is an MCP gateway — it sits between your AI agents and Obsidian HTTP MCP, 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.

  1. Create a free account and register Obsidian HTTP MCP — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
RESTRICT THIS TOOL →

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Related tools and policies

Go deeper

Questions about delete_folder

What does the delete_folder tool do? +

Delete all files in a folder recursively. By default moves to .trash-http-mcp/ (soft delete). Use permanent=true for irreversible deletion. Empty folders remain (API limitation). It is categorised as a Destructive tool in the Obsidian HTTP MCP 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 HTTP 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 HTTP MCP. 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 HTTP MCP server (nasandnora/obsidian-http-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Obsidian HTTP MCP tool call.

Start from Obsidian HTTP 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.

12 Obsidian HTTP MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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