Remove a placed symbol from a KiCAD schematic (.kicad_sch). This removes the symbol instance (the placed component) from the schematic. It does NOT remove the symbol definition from lib_symbols. Note: This tool operates on schematic files (.kicad_sch). To remove a footprint from a PCB, use delete...
AI agents call delete_schematic_component to permanently remove resources in KiCAD-MCP-Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool permanently removes schematic components, which cannot be automatically undone without explicit undo functionality. While the deletion is scoped to individual component instances rather than entire files, the action is irreversible and could cause significant loss of design work if misused by an AI agent (e.g., deleting critical components from a complex schematic).
From the tool's definition Tool name contains 'delete' and description states 'Remove a placed symbol from a KiCAD schematic'; this irreversibly deletes component instances from schematic files.
Documented attack patterns abuse exactly the kind of access delete_schematic_component gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and KiCAD-MCP-Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_schematic_component:
{
"version": "1",
"default": "deny",
"hide": [
"delete_schematic_component"
]
}delete_schematic_component 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.
Remove a placed symbol from a KiCAD schematic (.kicad_sch). This removes the symbol instance (the placed component) from the schematic. It does NOT remove the symbol definition from lib_symbols. Note: This tool operates on schematic files (.kicad_sch). To remove a footprint from a PCB, use delete_component instead. It is categorised as a Destructive tool in the KiCAD-MCP-Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the KiCAD-MCP-Server MCP server in PolicyLayer and add a rule for delete_schematic_component: 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 KiCAD-MCP-Server. Nothing to install.
delete_schematic_component 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_schematic_component 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_schematic_component. 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_schematic_component is provided by the KiCAD-MCP-Server MCP server (mixelpixx/kicad-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from KiCAD-MCP-Server, 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.
157 KiCAD-MCP-Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.