set_dimension · Solidworks MCP: Risk & Policy

WHAT IT DOES

What set_dimension does on Solidworks

AI agents use set_dimension 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 set_dimension needs a policy

The tool modifies existing dimension values in a SolidWorks design, which alters the model geometry and properties. This is a Write operation because it creates or modifies data reversibly—dimensions can be changed or reverted. While it affects design files, it does not execute arbitrary code, delete data irreversibly, or involve financial transactions.

From the tool's definition Tool name 'set_dimension' and description 'Set the value of a dimension' indicate modification of design parameters in SolidWorks.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_dimension Rate-limited

set_dimension 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": {
    "set_dimension": {
      "limits": [
        {
          "counter": "set_dimension_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 set_dimension

What does the set_dimension tool do? +

Set the value of a dimension. 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 set_dimension? +

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

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

Can I rate-limit set_dimension? +

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

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

set_dimension 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.