diff --git a/dimensions_cli_client.py b/dimensions_cli_client.py
new file mode 100644
index 0000000..57ad591
--- /dev/null
+++ b/dimensions_cli_client.py
@@ -0,0 +1,483 @@
+#!/usr/bin/env python3
+"""
+LEGO Dimensions Portal CLI Client
+Moonlight Drive-In Theater System
+
+Reads LEGO Dimensions character/vehicle discs from the USB portal
+and sends legacy keys to the video player server.
+
+Requirements:
+    pip install pyusb libusb-package requests
+    
+Windows Driver Setup:
+    Use Zadig to install WinUSB driver for "LEGO READER V2.10"
+"""
+
+import requests
+import sys
+import argparse
+import time
+import os
+
+# Add current directory to path for lego_dimensions_reader import
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+from lego_dimensions_reader import (
+    LegoDimensionsReader,
+    TagInfo,
+    Pad,
+    COLORS,
+    generate_password,
+    __version__ as READER_VERSION
+)
+
+# Default server settings
+DEFAULT_SERVER = "100.94.163.117"
+DEFAULT_PORT = 8547
+
+# Tag colors config file
+TAG_COLORS_FILE = "tag_colors.json"
+
+# =============================================================================
+# TAG COLOR MAPPINGS (loaded from tag_colors.json)
+# =============================================================================
+
+def load_tag_colors(filepath: str = TAG_COLORS_FILE) -> tuple:
+    """
+    Load tag color mappings from JSON file.
+    Returns (tag_colors_dict, default_config)
+    """
+    import json
+    
+    default_config = {
+        'color': COLORS['CYAN'],
+        'effect': 'solid',
+        'name': 'Default'
+    }
+    
+    tag_colors = {}
+    
+    # Try to find the config file
+    search_paths = [
+        filepath,
+        os.path.join(os.path.dirname(os.path.abspath(__file__)), filepath),
+        os.path.join(os.getcwd(), filepath),
+    ]
+    
+    config_path = None
+    for path in search_paths:
+        if os.path.exists(path):
+            config_path = path
+            break
+    
+    if config_path is None:
+        print(f"  Note: {filepath} not found, using default colors")
+        return tag_colors, default_config
+    
+    try:
+        with open(config_path, 'r', encoding='utf-8') as f:
+            data = json.load(f)
+        
+        # Load default config
+        if 'default' in data:
+            default_config = {
+                'color': data['default'].get('color', COLORS['CYAN']),
+                'effect': data['default'].get('effect', 'solid'),
+                'name': data['default'].get('name', 'Default')
+            }
+        
+        # Load tag mappings (convert string keys to int)
+        if 'tags' in data:
+            for key, config in data['tags'].items():
+                try:
+                    legacy_key = int(key)
+                    tag_colors[legacy_key] = {
+                        'color': config.get('color', COLORS['CYAN']),
+                        'effect': config.get('effect', 'solid'),
+                        'name': config.get('name', '')
+                    }
+                except ValueError:
+                    pass  # Skip invalid keys
+        
+        print(f"  Loaded {len(tag_colors)} tag color mappings from {filepath}")
+        
+    except json.JSONDecodeError as e:
+        print(f"  Warning: Invalid JSON in {filepath}: {e}")
+    except Exception as e:
+        print(f"  Warning: Could not load {filepath}: {e}")
+    
+    return tag_colors, default_config
+
+
+# Will be loaded at runtime
+TAG_COLORS = {}
+DEFAULT_TAG_COLOR = {
+    'color': COLORS['CYAN'],
+    'effect': 'solid',
+    'name': 'Default'
+}
+
+
+def uid_to_legacy_key(uid: bytes) -> int:
+    """
+    Convert 7-byte UID to legacy integer key format.
+    Uses bytes 3-6 (the unique portion) as a 32-bit little-endian integer.
+    """
+    if len(uid) >= 7:
+        return int.from_bytes(uid[3:7], byteorder='little')
+    elif len(uid) >= 4:
+        return int.from_bytes(uid[:4], byteorder='little')
+    else:
+        return int.from_bytes(uid.ljust(4, b'\x00'), byteorder='little')
+
+
+def send_nfc(server_ip, port, nfc_id):
+    """Send NFC command to server"""
+    url = f"http://{server_ip}:{port}/api/video/play"
+    
+    try:
+        print(f"Sending NFC '{nfc_id}' to {server_ip}:{port}...")
+        response = requests.post(url, json={'nfc_id': str(nfc_id)}, timeout=5)
+        
+        if response.status_code == 200:
+            result = response.json()
+            if result.get('success'):
+                print(f"✓ SUCCESS: {result.get('message', 'Command sent')}")
+                return True
+            else:
+                print(f"✗ FAILED: {result.get('message', 'Unknown error')}")
+                return False
+        else:
+            print(f"✗ HTTP Error: {response.status_code}")
+            return False
+            
+    except requests.exceptions.ConnectionError:
+        print(f"✗ Cannot connect to server at {server_ip}:{port}")
+        return False
+    except requests.exceptions.Timeout:
+        print(f"✗ Request timeout - server not responding")
+        return False
+    except Exception as e:
+        print(f"✗ Error: {e}")
+        return False
+
+
+def send_skip(server_ip, port):
+    """Send skip command"""
+    url = f"http://{server_ip}:{port}/api/video/skip"
+    
+    try:
+        print(f"Sending skip command to {server_ip}:{port}...")
+        response = requests.post(url, timeout=5)
+        
+        if response.status_code == 200:
+            print("✓ Skip command sent")
+            return True
+        else:
+            print(f"✗ HTTP Error: {response.status_code}")
+            return False
+            
+    except Exception as e:
+        print(f"✗ Error: {e}")
+        return False
+
+
+def test_connection(server_ip, port):
+    """Test connection to server"""
+    url = f"http://{server_ip}:{port}/api/stats"
+    
+    try:
+        print(f"Testing connection to {server_ip}:{port}...")
+        response = requests.get(url, timeout=3)
+        
+        if response.status_code == 200:
+            print("✓ Server is online and responding")
+            stats = response.json()
+            print(f"  Videos played: {stats.get('videos_played', 'N/A')}")
+            print(f"  Current video: {stats.get('current_video', 'N/A')}")
+            print(f"  Uptime: {stats.get('uptime', 'N/A')}")
+            return True
+        else:
+            print(f"✗ Server error: HTTP {response.status_code}")
+            return False
+            
+    except requests.exceptions.ConnectionError:
+        print(f"✗ Cannot connect to server at {server_ip}:{port}")
+        print("  Make sure:")
+        print("  1. The video player is running")
+        print("  2. Web interface is enabled")
+        print("  3. IP address and port are correct")
+        print("  4. Firewall allows the connection")
+        return False
+    except Exception as e:
+        print(f"✗ Error: {e}")
+        return False
+
+
+def portal_mode(server_ip, port):
+    """Portal mode - read tags from LEGO Dimensions portal"""
+    global TAG_COLORS, DEFAULT_TAG_COLOR
+    
+    print("\n" + "="*60)
+    print("LEGO DIMENSIONS PORTAL MODE")
+    print("="*60)
+    print(f"Server: {server_ip}:{port}")
+    print(f"Reader version: {READER_VERSION}")
+    
+    # Load tag colors from JSON
+    TAG_COLORS, DEFAULT_TAG_COLOR = load_tag_colors()
+    
+    print("="*60)
+    print()
+    
+    # Track last sent to avoid duplicates
+    last_sent_key = None
+    last_sent_time = 0
+    DEBOUNCE_TIME = 2.0  # Seconds before allowing same tag again
+    
+    # Will be set after reader is created
+    reader = None
+    
+    def apply_tag_color(legacy_key: int):
+        """Apply color effect to ALL pads based on tag mapping"""
+        if reader is None:
+            return
+            
+        # Look up color config for this tag
+        config = TAG_COLORS.get(legacy_key, DEFAULT_TAG_COLOR)
+        color = config.get('color', COLORS['CYAN'])
+        effect = config.get('effect', 'solid')
+        name = config.get('name', '')
+        
+        if name:
+            print(f"    Theme: {name}")
+        
+        # Apply effect to ALL pads
+        if effect == 'pulse':
+            # Slow pulsing fade on all pads (count=255 for continuous)
+            reader.fade_pad(Pad.ALL, color, speed=15, count=255)
+        elif effect == 'flash':
+            # Quick flashing on all pads
+            reader.flash_pad(Pad.ALL, color, on_time=8, off_time=8, count=255)
+        else:
+            # Solid color on all pads
+            reader.set_pad_color(Pad.ALL, color)
+    
+    def on_tag_insert(tag: TagInfo):
+        nonlocal last_sent_key, last_sent_time
+        
+        legacy_key = uid_to_legacy_key(tag.uid)
+        current_time = time.time()
+        
+        print()
+        print(f"[+] TAG DETECTED on {tag.pad.name} pad")
+        print(f"    UID: {tag.uid_hex}")
+        print(f"    Legacy Key: {legacy_key}")
+        
+        # Step 1: ALL LEDs OFF
+        if reader:
+            reader.set_pad_color(Pad.ALL, COLORS['OFF'])
+        
+        # Debounce - don't resend same tag too quickly
+        if legacy_key == last_sent_key and (current_time - last_sent_time) < DEBOUNCE_TIME:
+            print(f"    (Skipping server - same tag sent {current_time - last_sent_time:.1f}s ago)")
+            # Still apply the theme effect even if skipping server
+            apply_tag_color(legacy_key)
+            return
+        
+        # Send to server
+        print()
+        if send_nfc(server_ip, port, legacy_key):
+            last_sent_key = legacy_key
+            last_sent_time = current_time
+            
+            if reader:
+                # Step 2: Blue blink CENTER to confirm scan
+                reader.set_pad_color(Pad.CENTER, COLORS['BLUE'])
+                time.sleep(0.15)
+                
+                # Step 3: ALL OFF
+                reader.set_pad_color(Pad.ALL, COLORS['OFF'])
+                time.sleep(0.1)
+                
+                # Step 4: Apply theme effect to ALL pads
+                apply_tag_color(legacy_key)
+        print()
+    
+    def on_tag_remove(tag: TagInfo):
+        print(f"[-] TAG REMOVED from {tag.pad.name} pad")
+        # Turn off ALL pad LEDs
+        if reader:
+            reader.set_pad_color(Pad.ALL, COLORS['OFF'])
+    
+    def on_connect():
+        print("✓ Portal connected and initialized")
+        print()
+        print("Place LEGO Dimensions discs on the portal...")
+        print("Press Ctrl+C to exit")
+        print()
+    
+    def on_disconnect():
+        print("\n✗ Portal disconnected")
+    
+    def on_error(e):
+        print(f"\n✗ Portal error: {e}")
+    
+    # Initialize reader
+    reader = LegoDimensionsReader()
+    reader.on_tag_insert = on_tag_insert
+    reader.on_tag_remove = on_tag_remove
+    reader.on_connect = on_connect
+    reader.on_disconnect = on_disconnect
+    reader.on_error = on_error
+    
+    try:
+        print("Connecting to portal...")
+        reader.start()
+        
+        # Keep running
+        while True:
+            time.sleep(0.5)
+            
+    except KeyboardInterrupt:
+        print("\n\nExiting...")
+    except ConnectionError as e:
+        print(f"\n✗ {e}")
+        return False
+    finally:
+        reader.disconnect()
+        print("Portal disconnected. Goodbye!")
+    
+    return True
+
+
+def interactive_mode(server_ip, port):
+    """Interactive mode for manual NFC input (no portal needed)"""
+    print("\n" + "="*60)
+    print("INTERACTIVE MODE (Manual Input)")
+    print("="*60)
+    print(f"Server: {server_ip}:{port}")
+    print("Commands:")
+    print("  - Type NFC ID and press Enter to send")
+    print("  - Type 'skip' to skip current video")
+    print("  - Type 'test' to test connection")
+    print("  - Type 'quit' or 'exit' to exit")
+    print("="*60)
+    print()
+    
+    while True:
+        try:
+            command = input("NFC> ").strip()
+            
+            if not command:
+                continue
+            
+            if command.lower() in ['quit', 'exit', 'q']:
+                print("Exiting...")
+                break
+            
+            if command.lower() == 'skip':
+                send_skip(server_ip, port)
+                continue
+            
+            if command.lower() == 'test':
+                test_connection(server_ip, port)
+                continue
+            
+            # Assume it's an NFC ID
+            send_nfc(server_ip, port, command)
+            
+        except KeyboardInterrupt:
+            print("\nExiting...")
+            break
+        except EOFError:
+            break
+
+
+def main():
+    """Main entry point"""
+    parser = argparse.ArgumentParser(
+        description='LEGO Dimensions Portal Client - Send NFC commands to video player',
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog=f"""
+Default server: {DEFAULT_SERVER}:{DEFAULT_PORT}
+
+Examples:
+  # Portal mode (default) - read tags from LEGO Dimensions portal
+  python dimensions_cli_client.py
+  
+  # Test connection first
+  python dimensions_cli_client.py -t
+  
+  # Send single NFC command manually
+  python dimensions_cli_client.py -n 12345678
+  
+  # Skip current video
+  python dimensions_cli_client.py --skip
+  
+  # Manual interactive mode (no portal)
+  python dimensions_cli_client.py -i
+  
+  # Use different server
+  python dimensions_cli_client.py -s 192.168.1.100 -p 8547
+        """
+    )
+    
+    parser.add_argument('-s', '--server', 
+                       default=DEFAULT_SERVER,
+                       help=f'Server IP address (default: {DEFAULT_SERVER})')
+    
+    parser.add_argument('-p', '--port', 
+                       type=int,
+                       default=DEFAULT_PORT,
+                       help=f'Server port (default: {DEFAULT_PORT})')
+    
+    parser.add_argument('-n', '--nfc',
+                       help='NFC ID to send (manual, no portal needed)')
+    
+    parser.add_argument('-t', '--test',
+                       action='store_true',
+                       help='Test connection to server')
+    
+    parser.add_argument('--skip',
+                       action='store_true',
+                       help='Send skip video command')
+    
+    parser.add_argument('-i', '--interactive',
+                       action='store_true',
+                       help='Manual interactive mode (no portal)')
+    
+    args = parser.parse_args()
+    
+    print("="*60)
+    print("LEGO Dimensions Portal Client")
+    print("Moonlight Drive-In Theater System")
+    print("="*60)
+    
+    # Test connection
+    if args.test:
+        test_connection(args.server, args.port)
+        return 0
+    
+    # Send skip
+    if args.skip:
+        success = send_skip(args.server, args.port)
+        return 0 if success else 1
+    
+    # Send manual NFC
+    if args.nfc:
+        success = send_nfc(args.server, args.port, args.nfc)
+        return 0 if success else 1
+    
+    # Manual interactive mode
+    if args.interactive:
+        interactive_mode(args.server, args.port)
+        return 0
+    
+    # Default: Portal mode
+    success = portal_mode(args.server, args.port)
+    return 0 if success else 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())