Version: 1.0.0
Date: April 1, 2026
Status: Draft
Claude Code Mobile is a Flutter-based mobile application that brings the full power of Claude Code to mobile devices with remote server execution via SSH. Users can connect to remote servers, select working directories, and interact with Claude AI to perform software engineering tasks—all from their mobile device.
- Zero Server Installation: No need to install Claude Code on the remote server
- SSH-Based Execution: All operations execute on remote servers via SSH
- Custom Provider Support: Add and manage multiple AI providers (Anthropic, Bedrock, Vertex, custom endpoints)
- Full Tool Support: Complete implementation of Claude Code's tool system (Read, Write, Edit, Bash, Grep, Glob, etc.)
- Mobile-First UX: Optimized for touch interfaces with modern dark theme
- Claude Code CLI requires terminal access and is not mobile-friendly
- Developers need to install Claude Code on every server they work with
- No native mobile solution for AI-assisted coding on remote servers
- Limited flexibility in choosing AI providers
- Mobile Developers: Working on-the-go, need quick access to remote codebases
- DevOps Engineers: Managing multiple remote servers from mobile devices
- Remote Workers: Accessing work servers from tablets/phones
- Students/Learners: Learning to code with AI assistance on mobile devices
Enable developers to harness the full power of AI-assisted coding from any mobile device, with seamless remote server integration and zero server-side installation requirements.
- User Engagement: Average session duration > 15 minutes
- Connection Reliability: SSH connection uptime > 99%
- Tool Execution Success Rate: > 95%
- User Satisfaction: App Store rating > 4.5/5
- Performance: Tool execution latency < 2 seconds (excluding network)
Priority: P0 (Must Have)
Description:
Secure SSH connection to remote servers with credential management.
User Stories:
- As a user, I can add multiple SSH server configurations
- As a user, I can connect to a server using password or SSH key
- As a user, I can browse and select a working directory on the remote server
- As a user, I can see connection status in real-time
- As a user, I can auto-reconnect if connection drops
Technical Requirements:
- Support SSH password authentication
- Support SSH key-based authentication (RSA, ED25519)
- Store credentials securely using Flutter Secure Storage
- Implement connection pooling and keep-alive
- Handle network interruptions gracefully
- Support SSH tunneling for additional security
Acceptance Criteria:
- User can add/edit/delete SSH configurations
- User can connect/disconnect from servers
- Connection status updates in real-time
- Auto-reconnect works within 5 seconds of network restoration
- Credentials are encrypted at rest
Priority: P0 (Must Have)
Description:
Flexible system for managing multiple AI providers with custom endpoint support.
User Stories:
- As a user, I can add custom AI providers (Anthropic, Bedrock, Vertex, custom)
- As a user, I can configure API keys and endpoints for each provider
- As a user, I can switch between providers during a conversation
- As a user, I can set a default provider
- As a user, I can test provider connectivity before saving
Technical Requirements:
- Support Anthropic API (first-party)
- Support AWS Bedrock
- Support Google Vertex AI
- Support custom OpenAI-compatible endpoints
- Store API keys in Flutter Secure Storage
- Implement provider health checks
- Support model selection per provider (Opus, Sonnet, Haiku)
Acceptance Criteria:
- User can add/edit/delete providers
- User can test provider before saving
- User can switch providers mid-conversation
- API keys are encrypted at rest
- Provider errors are handled gracefully with user-friendly messages
Priority: P0 (Must Have)
Description:
Interactive chat interface where users communicate with Claude, with real-time tool execution visualization.
User Stories:
- As a user, I can send messages to Claude
- As a user, I can see Claude's responses in real-time (streaming)
- As a user, I can see which tools Claude is executing
- As a user, I can see tool execution progress
- As a user, I can approve/deny tool executions (permission system)
- As a user, I can view tool results inline
- As a user, I can copy code snippets from responses
Technical Requirements:
- Implement streaming response rendering
- Support markdown rendering with syntax highlighting
- Display tool execution indicators with progress
- Implement permission system (auto-allow, prompt, deny)
- Support message history with infinite scroll
- Handle long-running tool executions
- Support message editing and regeneration
Acceptance Criteria:
- Messages stream in real-time
- Tool executions show progress indicators
- Code blocks have syntax highlighting
- User can copy code with one tap
- Permission prompts appear before destructive operations
- Chat history loads smoothly with pagination
Priority: P0 (Must Have)
Description:
Complete implementation of Claude Code's tool system, adapted for SSH execution.
Core Tools:
- FileReadTool: Read files from remote server
- FileWriteTool: Create/overwrite files on remote server
- FileEditTool: Partial file edits (find/replace)
- BashTool: Execute bash commands via SSH
- GrepTool: Search file contents (ripgrep)
- GlobTool: Find files by pattern
- WebFetchTool: Fetch web content (executed locally)
- WebSearchTool: Web search (executed locally)
Technical Requirements:
- All file operations execute via SSH
- Implement tool orchestration (parallel read-only, serial writes)
- Support tool result caching
- Handle tool execution timeouts
- Implement progress reporting for long-running tools
- Support tool execution cancellation
Acceptance Criteria:
- All 8 core tools implemented and tested
- Read-only tools execute in parallel (up to 10 concurrent)
- Write tools execute serially
- Tool timeouts handled gracefully
- User can cancel long-running tools
- Tool results cached appropriately
Priority: P1 (Should Have)
Description:
Persistent conversation sessions with history and resume capability.
User Stories:
- As a user, I can create new sessions
- As a user, I can view all my past sessions
- As a user, I can resume a previous session
- As a user, I can delete sessions
- As a user, I can search sessions by content
- As a user, I can export session transcripts
Technical Requirements:
- Store sessions in SQLite database
- Implement session search with FTS (Full-Text Search)
- Support session export (JSON, Markdown)
- Implement session auto-save
- Handle large sessions efficiently (pagination)
Acceptance Criteria:
- Sessions persist across app restarts
- User can resume sessions seamlessly
- Session list loads quickly (< 1 second)
- Search returns results in < 500ms
- Export generates valid files
Priority: P1 (Should Have)
Description:
Browse remote server file system and attach files to conversations.
User Stories:
- As a user, I can browse the remote file system
- As a user, I can view file contents
- As a user, I can attach files to my messages
- As a user, I can search for files
- As a user, I can see file metadata (size, modified date, permissions)
Technical Requirements:
- Implement lazy-loading directory tree
- Support file preview (text, images, code)
- Implement file search
- Cache directory listings
- Handle large directories efficiently
Acceptance Criteria:
- Directory tree loads incrementally
- File preview works for common formats
- Search returns results quickly
- Large directories don't freeze UI
Priority: P1 (Should Have)
Description:
App-wide settings and configuration options.
User Stories:
- As a user, I can configure app theme (dark/light)
- As a user, I can set default provider
- As a user, I can configure tool permissions (auto-allow, prompt, deny)
- As a user, I can set SSH connection timeout
- As a user, I can enable/disable analytics
- As a user, I can clear app cache
Technical Requirements:
- Store settings in SharedPreferences
- Implement theme switching
- Support per-tool permission configuration
- Implement cache management
Acceptance Criteria:
- Settings persist across app restarts
- Theme changes apply immediately
- Permission settings affect tool execution
- Cache clearing works correctly
- Framework: Flutter 3.x
- Language: Dart 3.x
- State Management: flutter_bloc
- SSH Client: dartssh2
- HTTP Client: dio
- Database: sqflite
- Secure Storage: flutter_secure_storage
- Markdown Rendering: flutter_markdown
- Syntax Highlighting: flutter_highlight
- Code Generation: freezed, json_serializable
Clean Architecture with BLoC
┌─────────────────────────────────────┐
│ Presentation Layer │
│ - Screens (UI) │
│ - Widgets │
│ - BLoCs (State Management) │
└──────────────┬──────────────────────┘
│
┌──────────────▼──────────────────────┐
│ Domain Layer │
│ - Entities │
│ - Use Cases │
│ - Repository Interfaces │
│ - Tool Abstractions │
└──────────────┬──────────────────────┘
│
┌──────────────▼──────────────────────┐
│ Data Layer │
│ - Repository Implementations │
│ - Data Sources (SSH, API, Local) │
│ - Models (DTOs) │
│ - Mappers │
└─────────────────────────────────────┘
lib/
├── core/
│ ├── constants/
│ ├── errors/
│ ├── theme/
│ └── utils/
├── data/
│ ├── datasources/
│ │ ├── ssh/
│ │ ├── api/
│ │ └── local/
│ ├── models/
│ └── repositories/
├── domain/
│ ├── entities/
│ ├── repositories/
│ ├── usecases/
│ └── tools/
└── presentation/
├── blocs/
├── screens/
└── widgets/
1. SSH Execution Model
- All file operations execute via SSH commands
- No server-side agent required
- Commands wrapped in error handling
- Results streamed back to app
2. Tool Orchestration
- Read-only tools execute in parallel (max 10)
- Write tools execute serially
- Tool results cached with TTL
- Progress reported via streams
3. State Management
- BLoC for business logic
- Separate BLoCs for chat, connection, provider
- Events for user actions
- States for UI rendering
4. Data Persistence
- SQLite for sessions and messages
- SharedPreferences for settings
- Secure Storage for credentials
- File cache for remote files
5. Error Handling
- Network errors: retry with exponential backoff
- SSH errors: reconnect automatically
- API errors: display user-friendly messages
- Tool errors: return to LLM for handling
- Mobile-First: Optimized for touch, one-handed use
- Dark Theme: Modern, eye-friendly dark theme as default
- Minimal Friction: Reduce taps to common actions
- Progressive Disclosure: Show advanced options only when needed
- Feedback: Always show what's happening (loading, progress, errors)
Home Screen
- List of recent sessions
- FAB to create new session
- Quick access to settings
- Connection status indicator
Connection Screen
- SSH server configuration
- Directory browser
- Connection test
- Save/Connect actions
Chat Screen
- Message list (scrollable)
- Input field with send button
- Tool execution indicators
- Provider selector
- Menu (settings, file browser, session info)
Settings Screen
- Provider management
- SSH configurations
- Tool permissions
- Theme selection
- About/Help
- Swipe: Delete sessions, dismiss notifications
- Long Press: Copy messages, select multiple items
- Pull to Refresh: Reload session list
- Tap: Select, open, execute
- Drag: Reorder providers
- All credentials encrypted at rest (AES-256)
- SSH keys stored in secure storage
- API keys never logged or exposed
- HTTPS for all API communication
- Certificate pinning for Anthropic API
- Session data encrypted in database
- Biometric authentication option
- No telemetry without user consent
- Conversation data stays on device
- Optional cloud backup (encrypted)
- Clear data deletion
- Privacy policy compliance (GDPR, CCPA)
- App launch: < 2 seconds
- SSH connection: < 5 seconds
- Message send: < 100ms (to start streaming)
- Tool execution: < 2 seconds (excluding network/compute)
- Session load: < 1 second
- File browser: < 500ms per directory
- Memory: < 200MB average
- Storage: < 100MB app size
- Battery: < 5% per hour of active use
- Network: Efficient (compress large responses)
- Support 1000+ sessions
- Support 10,000+ messages per session
- Support 100+ SSH configurations
- Support 50+ providers
- All use cases
- All repositories
- All tools
- All BLoCs
- Coverage target: > 80%
- SSH connection flow
- API communication
- Tool execution
- Session persistence
- Coverage target: > 60%
- All screens
- All widgets
- User interactions
- Coverage target: > 70%
- Complete user flows
- Critical paths
- Error scenarios
- Build Android APK/AAB
- Build iOS IPA
- Run tests (unit, integration, widget)
- Code quality checks (lint, format)
- Security scanning
- Generate coverage report
- Deploy to TestFlight/Play Console (beta)- Feature development on feature branches
- PR review with automated checks
- Merge to
developbranch - Weekly beta releases
- Monthly stable releases
- Hotfix process for critical bugs
- Semantic versioning (MAJOR.MINOR.PATCH)
- Build numbers auto-incremented
- Changelog generated from commits
- Multi-agent support (spawn sub-agents)
- Voice input/output
- Collaborative sessions (multiple users)
- Git integration (commit, push, PR)
- Terminal emulator
- Code editor with syntax highlighting
- Desktop app (Windows, macOS, Linux)
- Web app (PWA)
- Plugin system for custom tools
- Marketplace for providers/tools
- Team workspaces
- Analytics dashboard
- All P0 features implemented
- Test coverage > 70%
- No critical bugs
- Performance requirements met
- Security audit passed
- Beta testing with 50+ users
- App Store approval
- 1,000+ active users
- 4.5+ star rating
- < 1% crash rate
- 50%+ user retention (30-day)
- 10,000+ active users
- 4.7+ star rating
- < 0.5% crash rate
- 60%+ user retention (30-day)
- Featured on App Store/Play Store
| Risk | Impact | Probability | Mitigation |
|---|---|---|---|
| SSH connection instability | High | Medium | Implement robust reconnection, queue commands |
| API rate limiting | High | Medium | Implement caching, request throttling |
| Large file handling | Medium | High | Stream files, implement size limits |
| Battery drain | Medium | Medium | Optimize background tasks, use efficient algorithms |
| Security vulnerabilities | High | Low | Regular security audits, dependency updates |
| App Store rejection | High | Low | Follow guidelines strictly, prepare appeals |
- Provider: AI API service (Anthropic, Bedrock, etc.)
- Tool: Executable function (Read, Write, Bash, etc.)
- Session: Conversation thread with history
- SSH: Secure Shell protocol for remote access
- BLoC: Business Logic Component (state management pattern)
- Claude Code GitHub: https://github.com/anthropics/claude-code
- Anthropic API Docs: https://docs.anthropic.com
- Flutter Docs: https://flutter.dev
- SSH Protocol: RFC 4253
| Version | Date | Author | Changes |
|---|---|---|---|
| 1.0.0 | 2026-04-01 | Claude | Initial draft |
End of Document