# Android Observability Platform — AI-Oriented Requirements Document

## Project Name

Temporary codename:
- DroidScope

---

# Project Summary

A standalone cross-platform desktop application for Android application observability and debugging.

The platform allows developers to:

- Connect Android devices/emulators through ADB
- Monitor application behavior in real time
- Inspect network traffic
- Inspect storage and databases
- Monitor performance metrics
- Analyze memory behavior
- Observe Jetpack Compose recompositions
- Stream logs
- Modify runtime configurations

The application must provide a modern browser-like developer tooling experience similar to Chrome DevTools.

---

# Primary Goals

## Functional Goals

- Real-time Android observability
- Cross-platform desktop support
- Multi-device support
- Low-overhead instrumentation
- Developer-focused workflows
- Unified debugging interface
- Plugin-capable architecture

---

# Technology Stack

## Desktop Framework

### Wails

Responsibilities:
- Native desktop shell
- Window management
- Packaging
- Native integrations

---

## Backend

### Go

Responsibilities:
- ADB communication
- Device management
- Event streaming
- Monitoring orchestration
- Local APIs
- Session management
- Data aggregation

---

## Frontend

### React + TypeScript

Responsibilities:
- Dashboard UI
- Inspector panels
- Charts
- Tables
- Interaction layer

---

# High-Level Architecture

```text
Android App
    ↓
Instrumentation SDK
    ↓
ADB Tunnel / WebSocket
    ↓
Go Backend
    ↓
React Frontend
    ↓
Wails Desktop Shell
```

---

# Repository Structure

```text
root/
├── desktop/
├── backend-go/
├── frontend-react/
├── android-sdk/
├── shared-protocol/
├── docs/
└── scripts/
```

---

# Core Components

# 1. Android Instrumentation SDK

## Description

Embedded Android SDK responsible for collecting runtime diagnostics and streaming events to the desktop application.

---

## SDK Requirements

### General

- Kotlin-first
- Android SDK 24+
- Modular architecture
- Debug-build focused
- Runtime enable/disable
- Minimal overhead
- Safe fallback behavior
- R8/ProGuard compatibility

---

# 2. Go Backend

## Description

Central orchestration engine responsible for:
- ADB communication
- Session handling
- Event aggregation
- WebSocket streaming
- Data persistence

---

## Backend Requirements

### Device Management

#### Capabilities

- Detect connected devices
- Support multiple devices
- Wireless ADB support
- Device reconnect handling
- Emulator support

#### Commands

- List devices
- Connect device
- Disconnect device
- Restart session

---

### Event Streaming

#### Requirements

- WebSocket-based streaming
- Low latency
- Event batching
- Backpressure handling
- Event replay support

---

### Session Management

#### Requirements

- Multiple concurrent sessions
- Persistent sessions
- Session restore
- Session metadata

---

### Security

#### Requirements

- Local-only communication by default
- Session isolation
- Optional authentication
- Safe runtime permissions

---

# 3. React Frontend

## Description

Primary user interface for observability and inspection.

---

## Frontend Requirements

### General

- Modern desktop UI
- Responsive layout
- Fast rendering
- Keyboard shortcuts
- Search everywhere
- Virtualized large lists
- Multi-tab support

---

# Feature Requirements

# Device Manager

## Requirements

### Device List

Display:
- Device name
- Device ID
- Android version
- Connection type
- Connection status
- Battery level
- CPU architecture

---

### Device Actions

Support:
- Connect
- Disconnect
- Refresh
- Restart session
- Open shell

---

# Logcat Monitoring

## Requirements

### Features

- Real-time log streaming
- Structured log rendering
- Tag filtering
- Priority filtering
- Search
- Export logs

### Supported Priorities

- Verbose
- Debug
- Info
- Warn
- Error
- Assert

---

# Network Inspector

## Requirements

### Capture

- HTTP
- HTTPS
- WebSocket traffic

---

### Request Inspection

Display:
- URL
- Method
- Headers
- Query parameters
- Timing
- Body

---

### Response Inspection

Display:
- Status code
- Headers
- Body
- Response size
- Timing

---

### Features

- JSON formatting
- CURL export
- Request replay
- Filtering
- Search
- Timeline view

---

# Shared Preferences Inspector

## Requirements

### Features

- View entries
- Edit entries
- Delete entries
- Live updates

### Data Types

- String
- Int
- Long
- Float
- Boolean
- String Set

---

# Database Browser

## Requirements

### Features

- SQLite browsing
- Room database support
- Table inspection
- Query execution
- Schema visualization

### Query Support

- Read-only queries initially
- Query history
- Export support

---

# File Browser

## Requirements

### Features

- Browse sandbox files
- Download files
- Upload files
- Delete files
- Preview files

### Preview Support

- Text
- JSON
- Images

---

# Runtime Configuration

## Requirements

### Features

- Base URL override
- Feature flag toggles
- Runtime config editing
- Deep link launcher

---

# FPS Monitoring

## Requirements

### Features

- Real-time FPS tracking
- Jank detection
- Slow frame tracking
- Frame drop statistics

---

# Memory Monitoring

## Requirements

### Features

- Heap usage tracking
- Allocation monitoring
- GC event tracking
- Native memory visibility

---

# Memory Leak Detection

## Requirements

### Features

- Activity leak detection
- Fragment leak detection
- Retained object tracking
- Leak history

---

# Thread Monitoring

## Requirements

### Features

- Active thread list
- Main-thread blocking detection
- Thread state visibility
- ANR risk visibility

---

# StrictMode Monitoring

## Requirements

### Features

- Disk read violations
- Disk write violations
- Network-on-main-thread detection
- Resource leak detection

---

# Compose Recomposition Monitoring

## Requirements

### Features

- Recomposition counts
- Hotspot detection
- Frequent recomposition visibility
- State update tracing

---

# WebView Monitoring

## Requirements

### Features

- URL tracking
- Console log inspection
- Resource loading visibility
- WebView lifecycle visibility

---

# Device Information

## Requirements

### Display

- Device manufacturer
- Device model
- Android version
- ABI
- RAM
- Storage
- Battery
- Thermal status

---

# Loaded Libraries Inspection

## Requirements

### Features

- Loaded native libraries
- Dynamic library visibility
- ABI metadata

---

# Secure Storage Inspection

## Requirements

### Features

- Keystore visibility
- Key alias visibility
- Encryption metadata visibility

---

# Dashboard Layout

# Main Sections

## Sidebar

Contains:
- Devices
- Overview
- Logs
- Network
- Storage
- Performance
- Compose
- WebView
- Runtime
- Settings

---

## Main Panel

Displays:
- Active inspector
- Charts
- Tables
- Request details
- Device information

---

# Non-Functional Requirements

# Performance

## Requirements

- Low memory overhead
- Low CPU overhead
- Virtualized rendering
- Efficient event streaming

---

# Reliability

## Requirements

- Graceful reconnect handling
- Crash recovery
- Offline handling
- Buffered events

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# Security

## Requirements

- Debug-only instrumentation by default
- Sensitive data masking
- Localhost-only communication by default

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# Packaging Requirements

## Supported Platforms

- macOS
- Windows
- Linux

---

## Packaging Goals

- Single installer
- Bundled ADB
- No Android Studio requirement
- Minimal setup

---

# AI Agent Guidance

# Backend Guidelines

## Go Backend Principles

- Use goroutines for stream handling
- Prefer event-driven architecture
- Avoid tightly coupled modules
- Use interfaces for feature modules
- Keep protocol versioned

---

# Frontend Guidelines

## React Principles

- Use feature-based architecture
- Avoid excessive global state
- Use virtualization for large datasets
- Prefer streaming updates over polling

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# Android SDK Guidelines

## SDK Principles

- Avoid blocking main thread
- Ensure instrumentation can be disabled
- Prefer lightweight hooks
- Avoid unstable internal Android APIs where possible

---

# Event Protocol

## Event Structure

All events should contain:

```json
{
  "type": "",
  "timestamp": 0,
  "deviceId": "",
  "sessionId": "",
  "payload": {}
}
```

---

# MVP Scope

# Phase 1

## Included Features

- Device management
- Logcat streaming
- Network inspection
- SharedPreferences inspection
- SQLite browser
- File browser
- Runtime URL override

---

# Phase 2

## Included Features

- FPS monitoring
- Memory monitoring
- StrictMode monitoring
- Thread monitoring

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# Phase 3

## Included Features

- Leak visualization
- Compose recomposition tooling
- Advanced tracing
- Flamegraphs

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# Future Scope

## Potential Future Features

- Plugin system
- Scripting support
- Automation support
- iOS support
- Flutter support
- React Native support
- Remote device support
- Team collaboration

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# Out of Scope

## Explicit Non-Goals

- Production analytics platform
- MDM solution
- CI/CD tooling
- Cloud-hosted observability platform
- Crash reporting replacement

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# Success Criteria

## MVP Success Conditions

- Device detection works reliably
- Logs stream in real time
- Network inspector functions correctly
- Storage inspection is stable
- Dashboard remains responsive under heavy streams

---

# Product Positioning

Primary positioning statement:

> Chrome DevTools for Android Native Apps