Jevatar
Companion that answers only with facial expressions: Jev picks one of 16 moods for each message and a blob avatar morphs its face.
Overview
Jevatar is an AI companion that replies only with facial expressions. You type a message, Jev judges it and picks one of 16 moods (14 built-in expressions plus custom yes, shown as a quick double nod, and no, shown as a decreasing head shake), and the blobatar library morphs the avatar's face with transitions. There are no text replies and no visible chat history; recent turns are kept in memory only to give Jev context.
A single-file Bun server hosts the built front end and a react endpoint that calls Jev; low-confidence answers fall back to an unsure expression and errors to a sick expression. The key stays server-side. A test checks that the server's expression options do not drift from the avatar library's exports. Documentation is in Chinese and English, and it is MIT licensed.
What the decision model decides
| Type | Question | Answers |
|---|---|---|
| Choice | Which of 16 facial expressions best responds to this message? | — |
How it works
- User types a message
- Server sends it with recent turns to Jev
- Jev chooses an expression; low confidence becomes unsure
- Avatar morphs to the chosen expression
Strengths
- Playful demo of Choice with confidence fallback
- Key kept server-side
- Drift test between server options and avatar library
Caveats
- Toy companion; no evaluation
- Short in-memory context only
Getting started
Add TYPESAFE_API_KEY to .env, then `bun install` and `bun run dev`.At a glance
- Type
- Project
- Status
- prototype
- Language
- TypeScript
- Runtime
- Bun + Vite
- Has code
- yes
- Has tests
- yes
- License
- MIT
Use cases and integrations
How curated lists describe it
This project integrates Jev to provide structured decisions for its workflow. See the repository for implementation details.
logicrw/awesome-jev-projects
Frequently asked questions
Does it reply with text?
No, only with one of 16 facial expressions.
What happens when Jev is unsure?
It shows an unsure expression; errors show a sick expression.
Is chat history stored?
Only recent turns in memory for context.
Related projects
SillyTavern extension that asks your own Jev questions about each message and, when a rule matches, injects, rerolls or scripts.
PluginbetaJavaScriptInteractive art piece where Jev reads a post as 100 fictional observers, picking an intuition and scoring four feelings for each.
ProjectbetaTypeScriptAndroid WeChat assistant showing Jev emotion probabilities and intent readings beside messages; never sends replies.
AppbetaEmoji autocomplete that asks Jev eight parallel questions per typing pause: emoji choice, emotion, mood, urgency, sarcasm and more.
ServiceprototypeTypeScriptChatGPT-style web demo where Jev answers by choosing from predefined or custom answer sets, such as Yes/No, Pirate or Tabloid.
AppprototypeTypeScriptWeb demo where you paste text and Jev suggests the best-fitting emoji.
Demoprototype