Desktop Helper

A small bridge app for automatic in-game data and one-click runes
Download and install →

Why is it needed?

LoL Duel now runs on the web. For security, browsers don't let a website read the game client on your computer directly. This small app is the bridge: it reads data from the client, hands it to the site, and writes the rune page the site computed back to the client. The site works fully without it — you just pick your champion and opponent by hand.

What it does

  • Reads the items the enemy buys during the match and updates the advice automatically.
  • Sees enemy picks in champ select and shows their counters instantly.
  • Writes the computed rune page to the client in one click (or automatically).

What it doesn't do

  • Sends nothing to the internet and stores nothing.
  • Doesn't interfere with the game or play anything for you.
  • Uses only the local interfaces Riot itself permits.

Setup

  1. Download the app and run it (no installation needed).
  2. In the window that opens, click "Open the site and pair".
  3. That's it. Keep it running while you play; close it and the site falls back to manual mode.

Security

The bridge listens only on your own machine (127.0.0.1) and can't be reached from outside. Only allowed site addresses get a response, and writing runes requires the pairing key — a site in another tab can't write to your client.