import_step

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/import-step.md

WHAT IT DOES

What import_step does on FreeCAD Robust MCP Server

AI agents use import_step 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 import_step is rated Medium

Importing files modifies the FreeCAD project state by adding external geometry/models to the active document. This is a reversible data modification (Write category) rather than a Read operation, since it alters the in-memory model. The description is empty, which reduces confidence slightly, but the tool name and server context strongly suggest CAD geometry import.

From the tool's definition Tool name 'import_step' indicates importing STEP format files into FreeCAD. STEP is a standard 3D CAD format. The sibling tools are all modeling operations (add_sketch_*, add_external_geometry, activate_workbench), consistent with CAD manipulation.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

import_step Rate-limited

import_step 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": {
    "import_step": {
      "limits": [
        {
          "counter": "import_step_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 import_step call is checked against it from then on.

FAQ

Questions about import_step

What does the import_step tool do? +

import_step 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 import_step? +

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

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

Can I rate-limit import_step? +

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

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

import_step 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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