add_sketch_line

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/add-sketch-line.md

WHAT IT DOES

What add_sketch_line does on FreeCAD Robust MCP Server

AI agents use add_sketch_line 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 add_sketch_line is rated Medium

This tool creates new sketch elements (lines) which are reversible modifications to the 3D model. It does not execute arbitrary code, delete data, or affect financial systems. The severity is medium because careless AI use could create large quantities of unwanted geometry requiring manual cleanup, but modifications to a FreeCAD project are generally undoable via undo functionality.

From the tool's definition Tool name 'add_sketch_line' indicates creation of a line element in a sketch within FreeCAD's 3D modeling environment.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_sketch_line 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 add_sketch_line, this is the rule to start with:

add_sketch_line Rate-limited

add_sketch_line 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_line": {
      "limits": [
        {
          "counter": "add_sketch_line_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 add_sketch_line call is checked against it from then on.

FAQ

Questions about add_sketch_line

What does the add_sketch_line tool do? +

add_sketch_line 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 add_sketch_line? +

Register the FreeCAD Robust MCP Server MCP server in PolicyLayer and add a rule for add_sketch_line: 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 add_sketch_line? +

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

Can I rate-limit add_sketch_line? +

Yes. Add a rate_limit block to the add_sketch_line 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_line completely? +

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

add_sketch_line 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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