Create a Part Regular Polygon (2D wire). Args: polygon_sides: Number of sides (3 for triangle, 6 for hexagon, etc.). Defaults to 6. circumradius: Radius of circumscribed circle. Defaults to 5.0. name: Object name. Auto-generated if None. doc_name: Target document. Uses active document if None. Re...
AI agents use create_regular_polygon 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.
This tool creates new geometric data (a 2D polygon wire) in a FreeCAD document, which is a Write operation—it modifies the document by adding a new object. It is not Destructive because polygon creation is reversible and does not delete or overwrite existing data.
From the tool's definition Tool creates a new Part Regular Polygon (2D wire) in FreeCAD. Description explicitly states 'Create' and returns information about the 'created object'. The operation is reversible via undo functionality typical in CAD software.
Documented attack patterns abuse exactly the kind of access create_regular_polygon gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FreeCAD Robust MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_regular_polygon:
{
"version": "1",
"default": "deny",
"tools": {
"create_regular_polygon": {
"limits": [
{
"counter": "create_regular_polygon_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_regular_polygon 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.
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Create a Part Regular Polygon (2D wire). Args: polygon_sides: Number of sides (3 for triangle, 6 for hexagon, etc.). Defaults to 6. circumradius: Radius of circumscribed circle. Defaults to 5.0. name: Object name. Auto-generated if None. doc_name: Target document. Uses active document if None. Returns: Dictionary with created object information: - name: Object name - label: Object label - type_id: Object type. 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.
Register the FreeCAD Robust MCP Server MCP server in PolicyLayer and add a rule for create_regular_polygon: 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.
create_regular_polygon is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_regular_polygon 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.
Set action: deny in the PolicyLayer policy for create_regular_polygon. 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.
create_regular_polygon 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.
Deterministic rules across all 152 FreeCAD Robust MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
152 FreeCAD Robust MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.