Features

• See all requests the Riot Client and Riot's games send and receive - HTTP/S, RMS (riot messaging service), XMPP (chat), RTMP (custom games) and websockets
• Works on League of Legends, Valorant, Teamfight Tactics and Legends of Runeterra
• Modify the requests to change how the client works, eg. disable vanguard
• LCU and Riot Client websocket connection
• Send custom requests directly to the server or straight to client
• Fiddler or other HTTP proxy integration
• Run client with custom command line arguments, eg. LCU on any port you want
• Custom hosts blocklist to disable telemetry and tracking
• Disable OpenSSL verification certificate errors and see the client logs. See details

Installation

1. Clone or download the repository
2. Open Windows Command Prompt (CMD)
3. Run cd LeagueClientDebugger
4. pip install -r requirements.txt
5. Close all running League and Riot clients
6. python main.py, tested on python 3.9, 3.12 and 3.13
7. Select your server and press the Launch Client button

Development

• To edit .ui files, download Qt Designer
• Contributions are welcome! Feel free to make a pull request with any changes :-)

Discord

Feel free to ask any questions regarding this project, or league client on my discord server, although I won't be teaching you how to code there if you're a complete beginner