Duck ClientPrivacy
Last changed in November 2026.
Who runs this website
The person who runs this Duck Client server. They haven't added their name and address yet.
This website
No tracking, no ads, and no fonts or scripts from other websites: everything on it comes from this server. There's one cookie, and only if you sign in: it keeps you signed in for 30 days. Signing in needs it, so it doesn't need your consent (§ 25 (2) no. 2 TDDDG).
The website is hosted by Cloudflare. To deliver the pages and protect them from attacks, Cloudflare processes your IP address and what your browser sends with each request. That's in the legitimate interest of running a safe website (Art. 6(1)(f) GDPR). The download comes from the same server.
Duck Client and its server
When you use Duck Client, this server keeps your Minecraft name and account ID and when you were last seen. Capes you upload are shown with your name to the owner for review (in their Discord) and deleted after 60 days unless they're approved; approved capes stay in the gallery. The server also keeps which cape you wear.
If you turn on Friends: your friends and friend requests, your chat messages (for up to 90 days), your cosmetics, and how many messages you sent to the assistant each day. The assistant's answers come from an AI model at Cloudflare (Workers AI), and the conversations aren't kept. With each question, Duck Client also sends the names, Minecraft versions and mod loaders of your profiles, so the assistant can build modpacks and change your profiles; when it builds one, the mods Duck Client found on Modrinth go along too. If you send it a game log (to find out why the game crashed), a short part of it goes along, without your computer's user name, addresses or chat. None of that is kept. Shared modpack codes are deleted after a day.
Your face (8×8 pixels of your skin), so your friends see it next to your name on this website: sent by your launcher, or made by this server from the skin Mojang shows for your account. If you sign in here: when, and on which kind of browser (like "Chrome on Android"), for up to 30 days, so you can sign out from Duck Client. If you choose to show your profiles here: their names and pictures, Minecraft versions, mod loaders and mods, and when you last played them, until you turn it off. Only you see your profiles.
This is needed for the features you use (Art. 6(1)(b) GDPR). Your Microsoft sign-in never reaches this server.
Discord: Duck Client tells the Discord app on your PC that you're playing Duck Client (which Minecraft and profile, or that you're in the launcher), so your Discord friends see it. That goes from your PC to Discord; Discord fetches only the duck picture from this server. Switch it off in Duck Client (Settings → Accounts → Discord) or in Discord's activity settings.
Outside the EU
Cloudflare and Discord are US companies, so your data can be processed in the USA. Both say in their privacy policies that they take part in the EU-US Data Privacy Framework.
Your rights
You can ask the owner what is stored about you, and have it corrected, deleted or limited, get a copy of it, or object to its use. You can also complain to a data protection authority.