AI agents call delete_roof to permanently remove resources in IFC Bonsai MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool performs irreversible deletion of a roof structure within an IFC building model. IFC models are complex technical documents where roof elements represent significant architectural components. Deleting a roof cannot be easily undone programmatically and would corrupt the model's integrity.
From the tool's definition Tool name is 'delete_roof' which explicitly indicates irreversible deletion of a roof element from an IFC model. The description is empty but the verb 'delete' unambiguously signals a destructive operation.
Documented attack patterns abuse exactly the kind of access delete_roof gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and IFC Bonsai MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_roof:
{
"version": "1",
"default": "deny",
"hide": [
"delete_roof"
]
}delete_roof 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_roof. It is categorised as a Destructive tool in the IFC Bonsai MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the IFC Bonsai MCP server in PolicyLayer and add a rule for delete_roof: 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 IFC Bonsai MCP. Nothing to install.
delete_roof 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_roof 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_roof. 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_roof is provided by the IFC Bonsai MCP server (show2instruct/ifc-bonsai-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 52 IFC Bonsai MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
52 IFC Bonsai MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.