delete_symbol

Remove a symbol from a .kicad_sym library file.

SERVERKiCAD-MCP-Server SOURCEmixelpixx/kicad-mcp-server

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/mixelpixx-kicad-mcp-server/delete-symbol.md

WHAT IT DOES

What delete_symbol does on KiCAD-MCP-Server

AI agents call delete_symbol 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.

RISK

Why delete_symbol is rated Critical

This tool performs irreversible deletion of symbol definitions from KiCAD library files. Once removed, the symbol is gone from the library and any designs referencing it may break. This is a destructive operation that modifies the persistent library state and cannot be easily reversed during normal operation, justifying the Destructive category and high severity due to potential data loss and project impact.

From the tool's definition 'Remove a symbol from a .kicad_sym library file' — the tool irreversibly deletes data from a library, which cannot be undone without restoration from backup.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_symbol safely

PolicyLayer is an MCP gateway: it sits between your AI agents and KiCAD-MCP-Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_symbol, this is the rule to start with:

delete_symbol Hidden

delete_symbol is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

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

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect KiCAD-MCP-Server, apply this rule, and every delete_symbol call is checked against it from then on.

FAQ

Questions about delete_symbol

What does the delete_symbol tool do? +

Remove a symbol from a .kicad_sym library file. 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.

How do I enforce a policy on delete_symbol? +

Register the KiCAD-MCP-Server MCP server in PolicyLayer and add a rule for delete_symbol: 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.

What risk level is delete_symbol? +

delete_symbol 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_symbol? +

Yes. Add a rate_limit block to the delete_symbol 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_symbol completely? +

Set action: deny in the PolicyLayer policy for delete_symbol. 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_symbol? +

delete_symbol 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.

KEEP EXPLORING

More on KiCAD-MCP-Server, and thousands of servers like it.

This server

All 231 KiCAD-MCP-Server tools → Critical-risk tools on this server →

Across the catalogue

sms_delete_message on Twilio SMS MCP Server →delete_snapshot on Why Did You Render →calendar_delete_event on Templonix Lite MCP Server →delete_addon_domain on cPanel MCP Server → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern database agents →Blast radius →Tool call approval →