Delete a geometry element from a sketch. Args: sketch_name: Name of the sketch. geometry_index: Index of the geometry to delete. doc_name: Document containing the sketch. Uses active document if None. Returns: Dictionary with result: - success: Whether the deletion succeeded - geometry_count: Rem...
AI agents call delete_sketch_geometry to permanently remove resources in FreeCAD Robust MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly deletes data (geometry elements) from a FreeCAD sketch. While FreeCAD typically supports undo, a tool explicitly designed to delete elements falls under Destructive rather than Write, as deletion is inherently irreversible at the tool level. The high severity reflects that an AI agent could corrupt a user's 3D model by deleting critical geometry.
From the tool's definition The tool name contains 'delete' and the description states 'Delete a geometry element from a sketch.' It permanently removes geometry elements from a sketch without reversibility through standard undo mechanisms in batch operations.
Documented attack patterns abuse exactly the kind of access delete_sketch_geometry gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FreeCAD Robust MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_sketch_geometry:
{
"version": "1",
"default": "deny",
"hide": [
"delete_sketch_geometry"
]
}delete_sketch_geometry disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Delete a geometry element from a sketch. Args: sketch_name: Name of the sketch. geometry_index: Index of the geometry to delete. doc_name: Document containing the sketch. Uses active document if None. Returns: Dictionary with result: - success: Whether the deletion succeeded - geometry_count: Remaining geometry count. It is categorised as a Destructive tool in the FreeCAD Robust MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the FreeCAD Robust MCP Server MCP server in PolicyLayer and add a rule for delete_sketch_geometry: 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 FreeCAD Robust MCP Server. Nothing to install.
delete_sketch_geometry is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_sketch_geometry 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.
Set action: deny in the PolicyLayer policy for delete_sketch_geometry. 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.
delete_sketch_geometry is provided by the FreeCAD Robust MCP Server MCP server (spkane/freecad-addon-robust-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 152 FreeCAD Robust MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
152 FreeCAD Robust MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.