create_net_class

Create a new net class and add specified nets to it

SERVERAltium-MCP-Suite SOURCEM-R-Abedini/Altium-MCP-Suite

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/altium-mcp-suite/create-net-class.md

WHAT IT DOES

What create_net_class does on Altium-MCP-Suite

AI agents use create_net_class to create or update resources in Altium-MCP-Suite, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Altium-MCP-Suite environment.

RISK

Why create_net_class is rated Medium

This tool creates and modifies PCB project data (net classes) reversibly. It does not execute arbitrary code, delete data irreversibly, or move financial assets. Net class creation is a standard design modification that can be undone or edited, fitting the Write category. Severity is medium because misconfiguration could affect PCB layout and manufacturing, but changes are recoverable.

From the tool's definition Tool name 'create_net_class' with description 'Create a new net class and add specified nets to it' indicates creation and modification of PCB design configuration. Creates new design artifacts and modifies net class assignments.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_net_class safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Altium-MCP-Suite, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_net_class, this is the rule to start with:

create_net_class Rate-limited

create_net_class 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": {
    "create_net_class": {
      "limits": [
        {
          "counter": "create_net_class_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 Altium-MCP-Suite, apply this rule, and every create_net_class call is checked against it from then on.

FAQ

Questions about create_net_class

What does the create_net_class tool do? +

Create a new net class and add specified nets to it. It is categorised as a Write tool in the Altium-MCP-Suite MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_net_class? +

Register the Altium-MCP-Suite MCP server in PolicyLayer and add a rule for create_net_class: 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 Altium-MCP-Suite. Nothing to install.

What risk level is create_net_class? +

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

Can I rate-limit create_net_class? +

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

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

create_net_class is provided by the Altium-MCP-Suite MCP server (M-R-Abedini/Altium-MCP-Suite). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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