register_symbol_library

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

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

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

WHAT IT DOES

What register_symbol_library does on KiCAD-MCP-Server

AI agents use register_symbol_library to create or update resources in KiCAD-MCP-Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your KiCAD-MCP-Server environment.

RISK

Why register_symbol_library is rated Medium

Registering a symbol library creates or modifies KiCAD's library configuration state. This is reversible (can be unregistered), has no financial impact, does not delete data, and does not execute arbitrary code. It fits the Write category as a configuration modification.

From the tool's definition Tool name 'register_symbol_library' and description 'Register a .kicad_sym library in KiCAD' indicate the tool modifies KiCAD's configuration by adding/registering a symbol library, which is a reversible write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs register_symbol_library 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 register_symbol_library, this is the rule to start with:

register_symbol_library Rate-limited

register_symbol_library stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "register_symbol_library": {
      "limits": [
        {
          "counter": "register_symbol_library_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT 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 register_symbol_library call is checked against it from then on.

FAQ

Questions about register_symbol_library

What does the register_symbol_library tool do? +

Register a .kicad_sym library in KiCAD. It is categorised as a Write tool in the KiCAD-MCP-Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on register_symbol_library? +

Register the KiCAD-MCP-Server MCP server in PolicyLayer and add a rule for register_symbol_library: 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 register_symbol_library? +

register_symbol_library is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit register_symbol_library? +

Yes. Add a rate_limit block to the register_symbol_library 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 register_symbol_library completely? +

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

register_symbol_library 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

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