rebuild_model · Solidworks MCP: Risk & Policy

WHAT IT DOES

What rebuild_model does on Solidworks

AI agents invoke rebuild_model 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 rebuild_model needs a policy

Rebuilding a model executes a recompute of all features and geometry in SolidWorks. This is an operation that runs/triggers external computation in the CAD application. It is not a simple read, nor does it irreversibly delete data, but it does cause SolidWorks to recalculate and potentially alter the state of the model (e.g., resolving errors, updating geometry).

From the tool's definition 'Rebuild the current model' — triggers a rebuild/recompute operation on the active SolidWorks model

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rebuild_model Rate-limited

rebuild_model 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": {
    "rebuild_model": {
      "limits": [
        {
          "counter": "rebuild_model_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 rebuild_model

What does the rebuild_model tool do? +

Rebuild the current model. 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 rebuild_model? +

Register the Solidworks MCP server in PolicyLayer and add a rule for rebuild_model: 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 rebuild_model? +

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

Can I rate-limit rebuild_model? +

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

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

rebuild_model 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.