connect_pins_with_labels

WHAT IT DOES

What connect_pins_with_labels does on KiCAD Schematic Manipulation MCP Server

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

WHY IT NEEDS A POLICY

Why connect_pins_with_labels needs a policy

This tool creates or modifies schematic data (electrical connections) rather than executing external commands or deleting data. The action is reversible—labels and connections can be edited or removed. While it affects circuit design, the blast radius is contained to schematic structure changes without executing code, triggering external hardware, or causing irreversible destruction.

From the tool's definition Tool description states it 'Connect[s] two component pins using same label', which modifies schematic connectivity by creating labeled connections between pins. This is a reversible structural modification to the schematic design.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

connect_pins_with_labels Rate-limited

connect_pins_with_labels 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": {
    "connect_pins_with_labels": {
      "limits": [
        {
          "counter": "connect_pins_with_labels_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches KiCAD Schematic Manipulation MCP Server, so you can run agents against it safely.

FAQ

Questions about connect_pins_with_labels

What does the connect_pins_with_labels tool do? +

Connect two component pins using same label. It is categorised as a Write tool in the KiCAD Schematic Manipulation 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 connect_pins_with_labels? +

Register the KiCAD Schematic Manipulation MCP Server MCP server in PolicyLayer and add a rule for connect_pins_with_labels: 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 Schematic Manipulation MCP Server. Nothing to install.

What risk level is connect_pins_with_labels? +

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

Can I rate-limit connect_pins_with_labels? +

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

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

connect_pins_with_labels is provided by the KiCAD Schematic Manipulation MCP Server MCP server (richard-luc/kicad-schematic-manipulation). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.