project-overview

name	project-overview
description	Complete project architecture and structure guide. Use when exploring the codebase, understanding project organization, finding files, or needing comprehensive architectural context. Triggers on architecture questions, directory navigation, or project overview needs.

LobeChat Project Overview

Project Description

Open-source, modern-design AI Agent Workspace: LobeHub (previously LobeChat).

Supported platforms:

• Web desktop/mobile
• Desktop (Electron)
• Mobile app (React Native) - coming soon

Logo emoji: 🤯

Complete Tech Stack

Category	Technology
Framework	Next.js 16 + React 19
Routing	SPA inside Next.js with react-router-dom
Language	TypeScript
UI Components	@lobehub/ui, antd
CSS-in-JS	antd-style
Icons	lucide-react, @ant-design/icons
i18n	react-i18next
State	zustand
URL Params	nuqs
Data Fetching	SWR
React Hooks	aHooks
Date/Time	dayjs
Utilities	es-toolkit
API	TRPC (type-safe)
Database	Neon PostgreSQL + Drizzle ORM
Testing	Vitest

Complete Project Structure

Monorepo using @lobechat/ namespace for workspace packages.

lobe-chat/
├── apps/
│   └── desktop/                 # Electron desktop app
├── docs/
│   ├── changelog/
│   ├── development/
│   ├── self-hosting/
│   └── usage/
├── locales/
│   ├── en-US/
│   └── zh-CN/
├── packages/
│   ├── agent-runtime/           # Agent runtime
│   ├── builtin-agents/
│   ├── builtin-tool-*/          # Builtin tool packages
│   ├── business/                # Cloud-only business logic
│   │   ├── config/
│   │   ├── const/
│   │   └── model-runtime/
│   ├── config/
│   ├── const/
│   ├── context-engine/
│   ├── conversation-flow/
│   ├── database/
│   │   └── src/
│   │       ├── models/
│   │       ├── schemas/
│   │       └── repositories/
│   ├── desktop-bridge/
│   ├── edge-config/
│   ├── editor-runtime/
│   ├── electron-client-ipc/
│   ├── electron-server-ipc/
│   ├── fetch-sse/
│   ├── file-loaders/
│   ├── memory-user-memory/
│   ├── model-bank/
│   ├── model-runtime/
│   │   └── src/
│   │       ├── core/
│   │       └── providers/
│   ├── observability-otel/
│   ├── prompts/
│   ├── python-interpreter/
│   ├── ssrf-safe-fetch/
│   ├── types/
│   ├── utils/
│   └── web-crawler/
├── src/
│   ├── app/
│   │   ├── (backend)/
│   │   │   ├── api/
│   │   │   ├── f/
│   │   │   ├── market/
│   │   │   ├── middleware/
│   │   │   ├── oidc/
│   │   │   ├── trpc/
│   │   │   └── webapi/
│   │   ├── [variants]/
│   │   │   ├── (auth)/
│   │   │   ├── (main)/
│   │   │   ├── (mobile)/
│   │   │   ├── onboarding/
│   │   │   └── router/
│   │   └── desktop/
│   ├── business/                # Cloud-only (client/server)
│   │   ├── client/
│   │   ├── locales/
│   │   └── server/
│   ├── components/
│   ├── config/
│   ├── const/
│   ├── envs/
│   ├── features/
│   ├── helpers/
│   ├── hooks/
│   ├── layout/
│   │   ├── AuthProvider/
│   │   └── GlobalProvider/
│   ├── libs/
│   │   ├── better-auth/
│   │   ├── oidc-provider/
│   │   └── trpc/
│   ├── locales/
│   │   └── default/
│   ├── server/
│   │   ├── featureFlags/
│   │   ├── globalConfig/
│   │   ├── modules/
│   │   ├── routers/
│   │   │   ├── async/
│   │   │   ├── lambda/
│   │   │   ├── mobile/
│   │   │   └── tools/
│   │   └── services/
│   ├── services/
│   ├── store/
│   │   ├── agent/
│   │   ├── chat/
│   │   └── user/
│   ├── styles/
│   ├── tools/
│   ├── types/
│   └── utils/
└── e2e/                         # E2E tests (Cucumber + Playwright)

Architecture Map

Layer	Location
UI Components	src/components, src/features
Global Providers	src/layout
Zustand Stores	src/store
Client Services	src/services/
REST API	src/app/(backend)/webapi
tRPC Routers	src/server/routers/{async|lambda|mobile|tools}
Server Services	src/server/services (can access DB)
Server Modules	src/server/modules (no DB access)
Feature Flags	src/server/featureFlags
Global Config	src/server/globalConfig
DB Schema	packages/database/src/schemas
DB Model	packages/database/src/models
DB Repository	packages/database/src/repositories
Third-party	src/libs (analytics, oidc, etc.)
Builtin Tools	src/tools, packages/builtin-tool-*
Cloud-only	src/business/*, packages/business/*

Data Flow

React UI → Store Actions → Client Service → TRPC Lambda → Server Services → DB Model → PostgreSQL