system_get_variable

A read tool on the AutoCAD MCP Pro MCP server.

SERVERAutoCAD MCP Pro SOURCEu-c4n/autocad-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/u-c4n-autocad-mcp/system-get-variable.md

WHAT IT DOES

What system_get_variable does on AutoCAD MCP Pro

AI agents call system_get_variable to retrieve information from AutoCAD MCP Pro without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why system_get_variable is rated Low

The name strongly suggests this tool retrieves (reads) the current value of an AutoCAD system variable without modifying state. This is consistent with read-only operations like analysis_* and selection tools on the same server. However, empty description reduces confidence.

From the tool's definition Tool name 'system_get_variable' indicates retrieval of a system variable value with no side effects. Description is empty, limiting certainty.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs system_get_variable safely

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

system_get_variable Allowed

system_get_variable is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "system_get_variable": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect AutoCAD MCP Pro, apply this rule, and every system_get_variable call is checked against it from then on.

FAQ

Questions about system_get_variable

What does the system_get_variable tool do? +

system_get_variable is a read tool on the AutoCAD MCP Pro MCP server. It is categorised as a Read tool in the AutoCAD MCP Pro MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on system_get_variable? +

Register the AutoCAD MCP Pro MCP server in PolicyLayer and add a rule for system_get_variable: 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 AutoCAD MCP Pro. Nothing to install.

What risk level is system_get_variable? +

system_get_variable is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit system_get_variable? +

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

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

system_get_variable is provided by the AutoCAD MCP Pro MCP server (u-c4n/autocad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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