Blender script to make new objects snap to the grid (because the asset browser doesn't do this)

snap.py

import bpy
import math

# Define grid size
GRID_SIZE = 1.0

# Track previously known object names
last_object_names = set(obj.name for obj in bpy.context.scene.objects)

def snap_to_grid(obj, grid_size=GRID_SIZE):
    """Snap an object's location to the nearest grid point."""
    loc = obj.location
    snapped = [round(coord / grid_size) * grid_size for coord in loc]
    obj.location = snapped

def check_new_objects_and_snap():
    global last_object_names
    current_names = set(obj.name for obj in bpy.context.scene.objects)
    new_object_names = current_names - last_object_names

    if new_object_names:
        for name in new_object_names:
            obj = bpy.context.scene.objects.get(name)
            if obj is not None:
                print(f"Snapping new object: {obj.name}")
                snap_to_grid(obj)
    
    last_object_names = current_names
    return 0.5  # Repeat every 0.5 seconds

# Start the timer
bpy.app.timers.register(check_new_objects_and_snap)

print("Auto-grid snapper started.")