edit_schematic_component

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/edit-schematic-component.md

WHAT IT DOES

What edit_schematic_component does on KiCAD-MCP-Server

AI agents use edit_schematic_component 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 edit_schematic_component is rated Medium

This is a Write operation because it creates and modifies schematic component metadata reversibly. The tool changes component properties and custom fields but does not execute code, delete data, or cause financial transactions. While it affects PCB design workflow, the changes can be undone (typical CAD undo/redo capability).

From the tool's definition Tool updates properties of placed symbols in-place, including footprint, value, reference designator, field labels, and custom properties (MPN, Manufacturer, DigiKey_PN, Mouser_PN, JLCPCB_PN, etc.). These changes are reversible modifications to schematic data.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

edit_schematic_component Rate-limited

edit_schematic_component 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": {
    "edit_schematic_component": {
      "limits": [
        {
          "counter": "edit_schematic_component_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 edit_schematic_component call is checked against it from then on.

FAQ

Questions about edit_schematic_component

What does the edit_schematic_component tool do? +

Update properties of a placed symbol in a KiCAD schematic (.kicad_sch) in-place. Use this tool to: • assign or update the footprint, value, or reference designator, • reposition field labels (Reference / Value text), • add, update, or remove ARBITRARY CUSTOM PROPERTIES used by BOM and sourcing workflows: MPN, Manufacturer, Manufacturer_PN, Distributor, DigiKey, DigiKey_PN, Mouser_PN, LCSC, JLCPCB_PN, Voltage, Tolerance, Power, Dielectric, etc. Custom properties are first-class — they survive ERC, are exported by export_bom, and are picked up by the JLCPCB / Digi-Key BOM tooling. Newly-added properties default to hidden so they do not clutter the schematic canvas. Multiple updates can be batched in a single call: pass any combination of \. 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 edit_schematic_component? +

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

What risk level is edit_schematic_component? +

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

Can I rate-limit edit_schematic_component? +

Yes. Add a rate_limit block to the edit_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.

How do I block edit_schematic_component completely? +

Set action: deny in the PolicyLayer policy for edit_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.

What MCP server provides edit_schematic_component? +

edit_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.

KEEP EXPLORING

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