set_sheet_property

Add or update a custom property on a hierarchical sheet

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/set-sheet-property.md

WHAT IT DOES

What set_sheet_property does on KiCAD-MCP-Server

AI agents use set_sheet_property 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 set_sheet_property is rated Medium

This tool modifies hierarchical sheet properties in a KiCAD design file. It is reversible (properties can be changed again or deleted) and does not execute arbitrary code, delete data irreversibly, or move funds. The blast radius is medium because incorrect property updates could affect circuit design metadata or downstream tools that parse these properties, but changes can be undone.

From the tool's definition Tool description states 'Add or update a custom property' which are Create/Modify operations. The tool name 'set_sheet_property' also indicates setting/updating behavior.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

set_sheet_property Rate-limited

set_sheet_property 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": {
    "set_sheet_property": {
      "limits": [
        {
          "counter": "set_sheet_property_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 set_sheet_property call is checked against it from then on.

FAQ

Questions about set_sheet_property

What does the set_sheet_property tool do? +

Add or update a custom property on a hierarchical sheet. 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 set_sheet_property? +

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

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

Can I rate-limit set_sheet_property? +

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

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

set_sheet_property 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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