Create a Part Cone primitive. Args: radius1: Bottom radius. Defaults to 5.0. radius2: Top radius (0 for pointed cone). Defaults to 0.0. height: Cone height. Defaults to 10.0. angle: Sweep angle in degrees (for partial cone). Defaults to 360. name: Object name. Auto-generated if None. doc_name: Ta...
AI agents use create_cone 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 a new geometric primitive (cone) in a FreeCAD document. This is a Write operation because it creates new data/objects in the document that can be subsequently modified or deleted. The creation is reversible—users can undo or delete the created cone.
From the tool's definition Tool description states 'Create a Part Cone primitive' with parameters for radius, height, angle, and name. The function creates and adds a new 3D object to a FreeCAD document, which is a reversible modification operation.
Documented attack patterns abuse exactly the kind of access create_cone 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_cone:
{
"version": "1",
"default": "deny",
"tools": {
"create_cone": {
"limits": [
{
"counter": "create_cone_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_cone 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 Cone primitive. Args: radius1: Bottom radius. Defaults to 5.0. radius2: Top radius (0 for pointed cone). Defaults to 0.0. height: Cone height. Defaults to 10.0. angle: Sweep angle in degrees (for partial cone). Defaults to 360. 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_cone: 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_cone 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_cone 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_cone. 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_cone 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.