delete_element

THE RISK

Critical Risk

This tool permanently removes elements from an Excalidraw diagram. While the blast radius is limited to diagram content (not critical infrastructure or financial systems), the action is irreversible and represents destructive data modification. An AI agent with unchecked access could delete essential diagram elements, corrupting user work.

From the tool's definition Tool name is 'delete_element' and description states 'Delete an Excalidraw element'. The verb 'delete' combined with the action of removing diagram elements indicates irreversible data removal.

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

HOW TO CONTROL DELETE_ELEMENT

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

policy.json

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

delete_element 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 Excalidraw 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

More Excalidraw MCP Server tools

Destructive clear_canvas Clear all elements from the canvas Execute set_viewport Control the canvas viewport (camera). Auto-fit all elements, center on a specific element, Write snapshot_scene Save a named snapshot of the current canvas state for later restoration Write align_elements Align elements to a specific position Write batch_create_elements Create multiple Excalidraw elements at once. For arrows, use startElementId/endElementId t Write create_element Create a new Excalidraw element. For arrows, use startElementId/endElementId to bind to sh Write create_from_mermaid Convert a Mermaid diagram to Excalidraw elements and render them on the canvas Write distribute_elements Distribute elements evenly

All 26 Excalidraw MCP Server tools →

Destructive tools on other servers

Frida Game Hacking MCP clear_scan MegaMemory remove_concept Frida Agent MCP kill_app 1MCP Server mcp_uninstall

Go deeper

Critical-risk tools in Excalidraw 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.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

What does the delete_element tool do? +

Delete an Excalidraw element. It is categorised as a Destructive tool in the Excalidraw 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_element? +

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

What risk level is delete_element? +

delete_element 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_element? +

Yes. Add a rate_limit block to the delete_element 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_element completely? +

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

delete_element is provided by the Excalidraw MCP Server MCP server (yctimlin/mcp_excalidraw). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Excalidraw MCP Server tool call.

Deterministic rules across all 26 Excalidraw MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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

// WHAT DELETE_ELEMENT ON EXCALIDRAW MCP SERVER DOES

// THE RISK

// HOW TO CONTROL DELETE_ELEMENT

// EXPLORE