groove_sketch

A write tool on the FreeCAD Robust MCP server.

SERVERFreeCAD Robust MCP Server SOURCEspkane/freecad-addon-robust-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/spkane-freecad-addon-robust-mcp-server/groove-sketch.md

WHAT IT DOES

What groove_sketch does on FreeCAD Robust MCP Server

AI agents use groove_sketch to create or update resources in FreeCAD Robust MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FreeCAD Robust MCP Server environment.

RISK

Why groove_sketch is rated Medium

Groove operations in CAD typically create or modify features by cutting along a path. This would reversibly modify the FreeCAD model. The empty description reduces confidence from 0.75 to 0.6, but the tool context and naming are reliable indicators. Classified as Write (not Execute) because it appears to be a direct CAD operation with predictable parameters rather than arbitrary code execution.

From the tool's definition Tool name 'groove_sketch' combined with sibling tools that are all sketch manipulation operations (add_sketch_arc, add_sketch_line, add_sketch_circle, etc.). The pattern indicates this modifies sketch geometry in FreeCAD.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs groove_sketch safely

PolicyLayer is an MCP gateway: it sits between your AI agents and FreeCAD Robust MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For groove_sketch, this is the rule to start with:

groove_sketch Rate-limited

groove_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": {
    "groove_sketch": {
      "limits": [
        {
          "counter": "groove_sketch_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect FreeCAD Robust MCP Server, apply this rule, and every groove_sketch call is checked against it from then on.

FAQ

Questions about groove_sketch

What does the groove_sketch tool do? +

groove_sketch is a write tool on the FreeCAD Robust MCP Server MCP server. It is categorised as a Write tool in the FreeCAD Robust MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on groove_sketch? +

Register the FreeCAD Robust MCP Server MCP server in PolicyLayer and add a rule for groove_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 FreeCAD Robust MCP Server. Nothing to install.

What risk level is groove_sketch? +

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

Can I rate-limit groove_sketch? +

Yes. Add a rate_limit block to the groove_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 groove_sketch completely? +

Set action: deny in the PolicyLayer policy for groove_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 groove_sketch? +

groove_sketch is provided by the FreeCAD Robust MCP Server MCP server (spkane/freecad-addon-robust-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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