system_prompt_message

Utility.Prompt: tell the operator something where they are looking.

SERVERAutoCAD MCP Pro SOURCEu-c4n/autocad-mcp

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/u-c4n-autocad-mcp/system-prompt-message.md

WHAT IT DOES

What system_prompt_message does on AutoCAD MCP Pro

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

RISK

Why system_prompt_message is rated Medium

An AI agent can call system_prompt_message faster than any human can review: one bad instruction and it creates or modifies resources in AutoCAD MCP Pro by the hundred, each call as confident as the last.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

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

system_prompt_message Rate-limited

system_prompt_message 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": {
    "system_prompt_message": {
      "limits": [
        {
          "counter": "system_prompt_message_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 AutoCAD MCP Pro, apply this rule, and every system_prompt_message call is checked against it from then on.

FAQ

Questions about system_prompt_message

What does the system_prompt_message tool do? +

Utility.Prompt: tell the operator something where they are looking. It is categorised as a Write tool in the AutoCAD MCP Pro MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on system_prompt_message? +

Register the AutoCAD MCP Pro MCP server in PolicyLayer and add a rule for system_prompt_message: 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_prompt_message? +

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

Can I rate-limit system_prompt_message? +

Yes. Add a rate_limit block to the system_prompt_message 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_prompt_message completely? +

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

system_prompt_message 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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