Export objects to OBJ format. OBJ (Wavefront) is a common 3D model format supported by many 3D graphics applications and game engines. Args: file_path: Path for the output .obj file. object_names: List of object names to export. Exports all visible if None. doc_name: Document to export from. Uses...
AI agents use export_obj 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 files with 3D model data, which is a reversible write operation. It does not delete or destructively modify existing data, does not execute arbitrary code or commands, and does not involve financial transactions.
From the tool's definition Tool creates and writes 3D model data to a .obj file at a specified file_path. The description explicitly states 'Export objects to OBJ format' and takes 'file_path: Path for the output .obj file' as a parameter, indicating file creation/writing.
Documented attack patterns abuse exactly the kind of access export_obj 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 export_obj:
{
"version": "1",
"default": "deny",
"tools": {
"export_obj": {
"limits": [
{
"counter": "export_obj_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}export_obj 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.
Free to start. No card required.
Export objects to OBJ format. OBJ (Wavefront) is a common 3D model format supported by many 3D graphics applications and game engines. Args: file_path: Path for the output .obj file. object_names: List of object names to export. Exports all visible if None. doc_name: Document to export from. Uses active document if None. mesh_tolerance: Mesh approximation tolerance. Lower = finer mesh. Returns: Dictionary with export result: - success: Whether export was successful - path: Path to exported file - object_count: Number of objects exported. 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 export_obj: 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.
export_obj 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 export_obj 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 export_obj. 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.
export_obj 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.