simple_extrude · Solidworks MCP: Risk & Policy

WHAT IT DOES

What simple_extrude does on Solidworks

AI agents invoke simple_extrude to trigger actions in Solidworks. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why simple_extrude needs a policy

The tool executes a CAD operation (extrusion) in SolidWorks, creating 3D geometry from sketch profiles. This constitutes an external operation with side effects on the active SolidWorks document. The description is minimal, lowering confidence, but the name and context (CAD modeling server) clearly indicate it runs a feature creation command.

From the tool's definition 'Simplified extrusion helper' — triggers a SolidWorks extrusion operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

simple_extrude Rate-limited

simple_extrude stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "simple_extrude": {
      "limits": [
        {
          "counter": "simple_extrude_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about simple_extrude

What does the simple_extrude tool do? +

Simplified extrusion helper. It is categorised as a Execute tool in the Solidworks MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on simple_extrude? +

Register the Solidworks MCP server in PolicyLayer and add a rule for simple_extrude: 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 Solidworks. Nothing to install.

What risk level is simple_extrude? +

simple_extrude is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit simple_extrude? +

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

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

simple_extrude is provided by the Solidworks MCP server (solidworks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.