sketch_offset · Solidworks MCP: Risk & Policy

WHAT IT DOES

What sketch_offset does on Solidworks

AI agents use sketch_offset 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 sketch_offset needs a policy

This tool creates (modifies) sketch geometry by generating offset curves from existing entities. This is a reversible modification operation typical of CAD design workflows—new sketch entities can be deleted or the operation undone. It does not execute arbitrary code, delete data irreversibly, or involve financial transactions.

From the tool's definition Tool name 'sketch_offset' and description 'Create offset curves from sketch entities' indicate the tool creates new sketch geometry. The verb 'Create' and context of sketch modification show this is a write operation that adds new entities to the sketch.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sketch_offset Rate-limited

sketch_offset 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": {
    "sketch_offset": {
      "limits": [
        {
          "counter": "sketch_offset_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 sketch_offset

What does the sketch_offset tool do? +

Create offset curves from sketch entities. 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 sketch_offset? +

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

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

Can I rate-limit sketch_offset? +

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

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

sketch_offset 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.