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A lightweight AI chat client for Wear OS round-screen watches. Talk to any OpenAI-compatible API (or Anthropic) right from your wrist, with streaming replies, thinking traces, and Markdown/LaTeX rendering — all within the constraints of a watch: small screen, limited memory.

• Streaming chat — SSE streaming for OpenAI Completions / Responses and Anthropic Messages APIs
• Round-screen native UI — official Wear Compose Material 3
• Pull-up drawer — a drag handle hovers 9dp above the screen bottom; pull up for the input bar, pull further for Settings
• Markdown + LaTeX — CommonMark with GFM tables/strikethrough; $..$, $$..$$, \(..\) and \[..\] formulas rendered inline or as blocks via JLaTeXMath, with literal dollars and code spans left untouched
• Thinking traces — reasoning models (e.g. DeepSeek) stream their chain of thought into a collapsible block inside the reply bubble; it auto-expands while thinking, auto-collapses when the body starts, and is persisted with the message
• Token usage — each reply shows ↓ out, ↑ in (cached) · t/s
• Message actions — long-press a bubble for a fullscreen action page: copy, select text, regenerate (works on user messages too), edit, delete
• Session log — append-only one JSON object per line (JSONL); a killed process replays the file, nothing lives only in memory
• Foreground service — one turn runs in a foreground service with a notification Stop action; stopping persists partial output
• Endpoint profiles — multiple endpoints, per-endpoint API type/key/model, auto model-list fetching
• i18n — Chinese (default) and English

flowchart LR
    UI["presentation/<br/>Compose UI"] --> SVC["AgentService<br/>foreground service"]
    SVC --> HTTP["ChatClient<br/>OkHttp SSE"]
    SVC --> LOG["SessionLog<br/>append-only file"]
    UI -. collects .-> SVC

• agent/ — no Android UI dependencies. ChatClient (SSE streaming, usage parsing, model fetching), AgentService (turn lifecycle), Transcript (provider-agnostic history items)
• session/ — DataStore-backed settings (endpoint profiles, input mode, display options) and the append-only session log
• presentation/ — Wear Compose UI: chat (curved/flat lists), pull-up drawer, fullscreen action/edit/select pages, settings, Markdown/LaTeX renderer

Requires JDK 17+, Android SDK 36.

gradlew.bat :app:assembleDebug
adb install -r app/build/outputs/apk/debug/app-debug.apk

1. Open the app → pull up the drawer → Settings
2. Endpoints → New endpoint
3. Fill endpoint URL (e.g. https://api.example.com) and API key
4. Fetch model list → pick a model (or type one manually)
5. Pull up → type → send

• Harness — planned watch-side tool execution and a multi-round tool loop.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. See LICENSE.