Critical Risk →

delete_entities_by_layer

Delete all entities on a specific layer

How to control delete_entities_by_layer ↓

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

Critical Risk

This tool permanently deletes entities (AutoCAD objects) from a drawing layer. Deletion is irreversible and cannot be undone by an AI agent if applied to the wrong layer. The blast radius includes loss of design work. While the scope is limited to a single layer (not the entire drawing), the destructive nature and potential for unintended data loss in a CAD context warrants 'high' severity.

From the tool's definition Tool name contains 'delete'; description states 'Delete all entities on a specific layer' — this irreversibly removes data without undo.

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

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

policy.json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_entities_by_layer"
  ]
}

delete_entities_by_layer 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 AutoCAD MCP Server — 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.
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Go deeper

What does the delete_entities_by_layer tool do? +

Delete all entities on a specific layer. It is categorised as a Destructive tool in the AutoCAD 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_entities_by_layer? +

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

What risk level is delete_entities_by_layer? +

delete_entities_by_layer 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_entities_by_layer? +

Yes. Add a rate_limit block to the delete_entities_by_layer 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_entities_by_layer completely? +

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

delete_entities_by_layer is provided by the AutoCAD MCP Server MCP server (thepiruthvirajan/autocad-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 AutoCAD MCP Server tool call.

Deterministic rules across all 21 AutoCAD MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

Free to start. No card required.

21 AutoCAD MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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