flexsim_new_model

Create a new blank simulation model to build manufacturing or warehouse digital twins for analysis and parameter studies.

Instructions

Create a new blank model.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Implementation Reference

mcp_server/flexsim_mcp.py:464-472 (handler)

Main handler implementation for flexsim_new_model tool. Gets the FlexSim controller, executes newmodel() FlexScript command, and returns success/error message.

@mcp.tool()
async def flexsim_new_model() -> str:
    """Create a new blank model."""
    try:
        controller = await get_controller()
        controller.evaluate("newmodel()")
        return "✓ New blank model created"
    except Exception as e:
        return format_error(e)

mcp_server/flexsim_mcp.py:147-154 (helper)

Helper function get_controller() that retrieves or creates the FlexSim controller instance, used by flexsim_new_model to access the simulation.

async def get_controller():
    """Get or create the FlexSim controller instance."""
    global _controller

    async with _controller_lock:
        if _controller is None:
            _controller = await launch_flexsim()
        return _controller

mcp_server/flexsim_mcp.py:129-140 (helper)

Helper function format_error() that formats exceptions into user-friendly error messages, used by flexsim_new_model for error handling.

def format_error(e: Exception) -> str:
    """Format exception as user-friendly error message."""
    msg = str(e)
    if "not found" in msg.lower():
        return f"Not found: {msg}"
    elif "syntax" in msg.lower():
        return f"FlexScript syntax error: {msg}"
    elif "license" in msg.lower():
        return f"License error: {msg}"
    elif "permission" in msg.lower():
        return f"Permission denied: {msg}"
    return f"Error: {msg}"

mcp_server/flexsim_mcp.py:216-216 (registration)
FastMCP server initialization at line 216 where the MCP server instance 'mcp' is created, which is used to register the flexsim_new_model tool via the @mcp.tool() decorator.
```
mcp = FastMCP("flexsim_mcp", lifespan=lifespan)
```
app.py:139-139 (schema)
Documentation entry for flexsim_new_model tool in the Model & Script section, describing it as 'Create blank model'.
```
| `flexsim_new_model` | Create blank model |
```

FlexSim MCP Server