add_sketch_dimension · Solidworks MCP: Risk & Policy

WHAT IT DOES

What add_sketch_dimension does on Solidworks

AI agents use add_sketch_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 add_sketch_dimension needs a policy

This tool modifies sketch geometry by adding dimensional constraints. While it creates new dimension objects rather than deleting or permanently altering existing geometry, it does change the sketch definition in a way that affects the design. This is reversible (dimensions can be removed), so it falls under Write rather than Destructive.

From the tool's definition Tool name 'add_sketch_dimension' and description 'Add dimensions to sketch entities' indicate modification of sketch data. The verb 'Add' shows creation/modification of dimension objects within a sketch, which are part of the design model.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_sketch_dimension Rate-limited

add_sketch_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": {
    "add_sketch_dimension": {
      "limits": [
        {
          "counter": "add_sketch_dimension_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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 add_sketch_dimension

What does the add_sketch_dimension tool do? +

Add dimensions to 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 add_sketch_dimension? +

Register the Solidworks MCP server in PolicyLayer and add a rule for add_sketch_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 add_sketch_dimension? +

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

Can I rate-limit add_sketch_dimension? +

Yes. Add a rate_limit block to the add_sketch_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 add_sketch_dimension completely? +

Set action: deny in the PolicyLayer policy for add_sketch_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 add_sketch_dimension? +

add_sketch_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.