sw_save · Solidworks MCP: Risk & Policy

WHAT IT DOES

What sw_save does on Solidworks

AI agents use sw_save 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_save needs a policy

This tool writes/modifies data by saving document state to disk. While reversible (previous versions may exist), it commits changes to the active document and could overwrite unsaved work or corrupt designs if invoked at an inappropriate time. It is not destructive (data is preserved, not deleted) and not execute-level (no arbitrary code execution).

From the tool's definition Tool name 'sw_save' and description '保存当前活动文档' (saves the current active document) indicate a file write operation that modifies and persists data in SolidWorks documents.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sw_save Rate-limited

sw_save 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_save": {
      "limits": [
        {
          "counter": "sw_save_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_save

What does the sw_save tool do? +

保存当前活动文档。. 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_save? +

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

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

Can I rate-limit sw_save? +

Yes. Add a rate_limit block to the sw_save 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_save completely? +

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

sw_save 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.