edit_sketch · Solidworks MCP: Risk & Policy

WHAT IT DOES

What edit_sketch does on Solidworks

AI agents use edit_sketch 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 edit_sketch needs a policy

This tool modifies CAD design data (sketch geometry) but the changes are reversible—sketches can be re-edited or reverted. It does not execute arbitrary code, delete data irreversibly, or trigger external operations. The blast radius is medium because incorrect sketch modifications could compromise design integrity, but changes remain editable.

From the tool's definition Tool name is 'edit_sketch' and description states 'Enter sketch edit mode for an existing sketch'. Sketch editing modifies geometry and design parameters in a reversible manner.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

edit_sketch Rate-limited

edit_sketch 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": {
    "edit_sketch": {
      "limits": [
        {
          "counter": "edit_sketch_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 edit_sketch

What does the edit_sketch tool do? +

Enter sketch edit mode for an existing sketch. 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 edit_sketch? +

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

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

Can I rate-limit edit_sketch? +

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

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

edit_sketch 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.