Create a new PartDesign Body. A PartDesign Body is a container for feature-based modeling that maintains a single solid shape through a sequence of operations. Args: name: Body name. Auto-generated if None. doc_name: Target document. Uses active document if None. Returns: Dictionary with created ...
AI agents use create_partdesign_body 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 modeling object in FreeCAD, which is a reversible write operation. It does not execute arbitrary code, delete data, move money, or produce irreversible changes. Users can delete or modify created bodies. The blast radius is minimal—the worst outcome is creation of unwanted design objects that can be easily undone.
From the tool's definition Tool creates a new PartDesign Body container object in FreeCAD with optional name and document parameters. The description states 'Create a new PartDesign Body' and returns creation metadata (name, label, type_id).
Documented attack patterns abuse exactly the kind of access create_partdesign_body 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_partdesign_body:
{
"version": "1",
"default": "deny",
"tools": {
"create_partdesign_body": {
"limits": [
{
"counter": "create_partdesign_body_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_partdesign_body 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 new PartDesign Body. A PartDesign Body is a container for feature-based modeling that maintains a single solid shape through a sequence of operations. Args: name: Body name. Auto-generated if None. doc_name: Target document. Uses active document if None. Returns: Dictionary with created body information: - name: Body name - label: Body 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_partdesign_body: 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_partdesign_body 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_partdesign_body 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_partdesign_body. 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_partdesign_body 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.