kicad.set_design_rules · Eda MCP: Risk & Policy

WHAT IT DOES

What kicad.set_design_rules does on Eda

AI agents use kicad.set_design_rules to create or update resources in Eda — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Eda environment.

WHY IT NEEDS A POLICY

Why kicad.set_design_rules needs a policy

The tool modifies design rule settings in a PCB project, which is a reversible Write operation. While it could affect design validation and manufacturing output, it doesn't execute arbitrary code, delete data, or cause irreversible harm. Medium severity reflects that misconfigured design rules could degrade design quality but remain recoverable through re-adjustment.

From the tool's definition Tool name 'set_design_rules' combined with context of KiCad 9.x PCB design workflows indicates modification of design rule configuration. Description is empty, reducing specificity.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

kicad.set_design_rules Rate-limited

kicad.set_design_rules 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": {
    "kicad.set_design_rules": {
      "limits": [
        {
          "counter": "kicad.set_design_rules_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 Eda, so you can run agents against it safely.

FAQ

Questions about kicad.set_design_rules

What does the kicad.set_design_rules tool do? +

kicad.set_design_rules. It is categorised as a Write tool in the Eda MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on kicad.set_design_rules? +

Register the Eda MCP server in PolicyLayer and add a rule for kicad.set_design_rules: 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 Eda. Nothing to install.

What risk level is kicad.set_design_rules? +

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

Can I rate-limit kicad.set_design_rules? +

Yes. Add a rate_limit block to the kicad.set_design_rules 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 kicad.set_design_rules completely? +

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

kicad.set_design_rules is provided by the Eda MCP server (saeronlab/eda-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.