sw_open_document · Solidworks MCP: Risk & Policy

WHAT IT DOES

What sw_open_document does on Solidworks

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

WHY IT NEEDS A POLICY

Why sw_open_document needs a policy

Opening a document modifies application state and can have side effects (loading external dependencies, triggering callbacks), making it a Write operation rather than a pure Read. It is reversible via sw_close_document (sibling tool), so it does not rise to Destructive. Not Execute because it does not directly run arbitrary code or shell commands, though it may invoke background processes.

From the tool's definition Tool name 'sw_open_document' and description indicate opening SolidWorks documents (.sldprt/.sldasm/.slddrw).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sw_open_document Rate-limited

sw_open_document 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": {
    "sw_open_document": {
      "limits": [
        {
          "counter": "sw_open_document_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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 sw_open_document

What does the sw_open_document tool do? +

打开 SolidWorks 文档（.sldprt / .sldasm / .slddrw）。返回文档基本信息。. It is categorised as a Write tool in the Solidworks MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sw_open_document? +

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

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

Can I rate-limit sw_open_document? +

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

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

sw_open_document is provided by the Solidworks MCP server (yimu0824/solidworks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.