add_sheet_pin

Add a pin to a sheet symbol block on the parent schematic. Sheet pins are the

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/add-sheet-pin.md

WHAT IT DOES

What add_sheet_pin does on KiCAD-MCP-Server

AI agents use add_sheet_pin 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 add_sheet_pin is rated Medium

This tool creates new schematic pins, which modifies the design reversibly. It falls under Write category as it creates design elements without irreversible deletion or code execution. Severity is medium because incorrect pin additions could cause schematic errors requiring manual correction, but changes are reversible through standard undo/redo operations.

From the tool's definition Tool name 'add_sheet_pin' and description 'Add a pin to a sheet symbol block on the parent schematic' indicate creating/modifying schematic elements.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

add_sheet_pin Rate-limited

add_sheet_pin 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": {
    "add_sheet_pin": {
      "limits": [
        {
          "counter": "add_sheet_pin_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 add_sheet_pin call is checked against it from then on.

FAQ

Questions about add_sheet_pin

What does the add_sheet_pin tool do? +

Add a pin to a sheet symbol block on the parent schematic. Sheet pins are the. 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 add_sheet_pin? +

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

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

Can I rate-limit add_sheet_pin? +

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

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

add_sheet_pin 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.

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