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AtomChat

A phone-app style chat experience for Minecraft, powered by Skia.
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Description

 

AtomChat

A phone-app style chat experience for Minecraft, powered by Skija.


MC Loaders Side OS Java License

AtomChat replaces the vanilla chat screen with a phone-style panel for public chat, private conversations and rich media. Its interface is vector-drawn with Skija and does not depend on vanilla chat textures.

Client required · Server optional. A server install adds hosted media, shared reactions, profile sync and server-provided content.

💬 Chat & Private Conversations

  • Public and private chats share one panel, with rounded bubbles, real player names and skin avatars.
  • Unread markers, per-conversation drafts and optional per-server or per-world history keep conversations organized.
  • Quote replies, rich text, chat filters, blocking and a multi-line composer are built in.
 Chat

 

🖼️ Media & Reactions

  • Send images and looping GIFs; browse emoji, kaomoji and stickers; react to messages with standard emoji.
  • Pick, paste or drag images into chat. Messages use the [[CICode]] protocol shared by the E33Chat / ChatImage family.
  • Images use server hosting when enabled; otherwise AtomChat falls back to an external image host. Shared reactions require AtomChat on the server.
 Media

 

👤 Profiles & Personalization

  • Customize your profile signature, avatar and banner. On AtomChat servers, profile details sync to other AtomChat players, and profile images are stored per world.
  • Choose a theme, adjust interface colors live and use a custom wallpaper.
 Profiles

 

✨ Effects & Sounds

  • Notification banners highlight mentions, quotes and whispers.
  • Optional phrase-triggered effects add hearts, birthday cakes or fireworks.
  • Notification and interface sounds have separate controls.
  

✅ Compatibility

Mod / protocol Compatibility
[[CICode]] — E33Chat / ChatImage Image-message protocol interoperability
ChatHeads Compatibility with Hud
Chat Animation Compatibility with Hud
Nickname / display-name plugins Best effort; unrecognized formats may appear as system messages
EasyBot-MCDR Common QQ relay formats are recognized
Quark Known issue: the emote menu may not appear

⚙️ Configuration & Storage

Expand for the client and server configuration paths and data locations.
The atomchat/ folder sits beside config/.

📁 Client Configuration & Local Content

Path Contents
config/atomchat/atomchat-client.json Client settings; created on first launch.
atomchat/client/avatar/avatar.* Custom profile avatar (png, jpg, jpeg or webp).
atomchat/client/banner/banner.* Custom profile banner (png, jpg, jpeg or webp); stored directly in config/atomchat/.
atomchat/client/wallpaper/wallpaper.* Custom panel wallpaper (png, jpg, jpeg or webp).
atomchat/client/emotes/ Your own stickers (png, jpg, jpeg or gif); unlimited by default, with an optional emoteMax cap.
atomchat/client/history/ Optional JSONL chat history, saved per server or world; off by default.
atomchat/client/presets/ Saved appearance presets and their wallpaper copies.

📦 Client Runtime Data

Path Contents
atomchat/cache/images/ Chat image cache, capped at 500 files / 100 MB; files unused for 7 days are removed. View or clear it under Settings → About.
atomchat/cache/packs/<server-key>/ Sticker packs downloaded from servers.
atomchat/cache/debug/ Avatar sampling images written in debug mode.

🖥️ Server Configuration & Data

Path (relative to the server game directory) Contents
config/atomchat/atomchat-server.json Server hosting, capacity and server-pack settings.
atomchat/server/emotes/ Sticker source offered to players; separate from a player's own emotes/ folder.
atomchat/server/media/ Chat images and GIFs hosted by the server.
atomchat/server/avatars/ Player avatars uploaded to the server.
<world save>/atomchat/profiles/documents/ Synced profile records, one per player UUID.
<world save>/atomchat/profiles/images/ World-scoped copies of synced profile images.

🖥️ For Server

A server install enables hosted media and profiles, shared message reactions, and server-provided stickers and quick phrases.

⚙️ Configuration

The server creates config/atomchat/atomchat-server.json on first launch. Edit it directly or use /atomchat gui in-game (permission level 2).

🗂️ Media & Profile Hosting

  • hostingEnabled is on by default.
  • Defaults: 2 MB per file, 512 MB media storage, and 7-day media retention. Set retentionDays to 0 to keep hosted media indefinitely.
  • Custom profile images have a separate 64 MB per-world limit and are not removed by temporary media cleanup.
  • Hosted files travel over the Minecraft connection; AtomChat opens no HTTP port.

🎁 Server Packs

  • packEnabled is on by default.
  • The server can offer up to 32 sticker files / 8 MB and up to 20 quick phrases of 200 characters each.
  • Put server stickers in config/atomchat/server-emotes/. The server icon and MOTD can provide the server identity shown in the client.

❓ FAQ

Is the server mod required?

No. The client mod works on its own. A server install enables hosted media, profile sync, shared reactions and server packs.

Where do images go?

With server hosting enabled, images are stored on that server and kept according to its retention settings. Otherwise uploads use uguu.se; those links expire after roughly three hours. Images upload only when you choose, paste or drag a file, but recipients may save or forward them. Chat history may also be saved locally by players who enable it. Do not send sensitive content.

Can I include AtomChat in a modpack?

Yes, under the MIT license. Keep the third-party notices with the distributed files.

📱 Feedback

  • Issues and suggestions: Issues
  • or comments.
  • Full documentation: Wiki

AtomChat Team

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E33EPUS
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