wyn360-cli 0.3.49

WYN360 - An intelligent AI coding assistant CLI tool powered by Anthropic Claude

WYN360 CLI

An intelligent AI coding assistant CLI tool powered by Anthropic Claude.

GitHub Repository: https://github.com/yiqiao-yin/wyn360-cli

🎯 Overview

WYN360 CLI is an AI-powered coding assistant that helps you build projects, generate code, and improve your codebase through natural language conversations. Built with pydantic-ai and Anthropic Claude, it provides intelligent file operations, command execution, and context-aware assistance.

🏗️ System Architecture

For a detailed architecture overview including all components, layers, and data flows, see SYSTEM.md.

📦 Installation

Basic Installation

pip install wyn360-cli

Optional: Enable Browser Use (Direct Website Fetching)

If you want to use the fetch_website feature to read specific URLs directly:

# Install Playwright browser binaries (one-time setup, ~200MB)
playwright install chromium

Note: Browser use is optional. Web search and all other features work without it. Only install if you need direct URL fetching (e.g., "Read https://github.com/user/repo").

🚀 Quick Start

1. Set up your Anthropic API key (choose one method):

Option 1: Environment variable

export ANTHROPIC_API_KEY=your_key_here

Option 2: .env file (recommended for local development)

# Create a .env file in your project directory
echo "ANTHROPIC_API_KEY=your_key_here" > .env

Option 3: Command-line argument

wyn360 --api-key your_key_here

Option 4: Use AWS Bedrock Credentials

export CLAUDE_CODE_USE_BEDROCK=1
export AWS_ACCESS_KEY_ID="your_access_key"
export AWS_SECRET_ACCESS_KEY="your_secret_key"
export AWS_SESSION_TOKEN="your_session_token"
export AWS_REGION=us-west-2
export ANTHROPIC_MODEL=us.anthropic.claude-sonnet-4-20250514-v1:0

2. Run the CLI:

wyn360

3. Start chatting:

You: Build a Streamlit app for data visualization

WYN360: I'll create a Streamlit app for you...
[Generates complete code and saves to app.py]

✨ Features

Core Capabilities

• 🤖 Interactive AI Assistant - Natural language conversations with Claude
• 📝 Code Generation - Generate production-ready Python code from descriptions
• 🔍 Project Analysis - Understand and improve existing codebases
• 📁 Smart File Operations - Context-aware file creation and updates
• ⚡ Command Execution - Run Python scripts, UV commands, shell scripts, any CLI tool
• ⌨️ Multi-line Input - Press Enter to submit, Shift+Enter for newline
• 🔒 Safety First - Confirmation prompts before executing commands

Intelligent Features (v0.2.x)

• 🧠 Intent Recognition - Understands "update" vs "create new" from natural language
• 🔄 Context-Aware Updates - Reads files before modifying them
• 🔁 Self-Correcting - Smart retry mechanism with 3 attempts
• ⏱️ Timeout Protection - Prevents infinite loops (5 min default)
• 📊 Comprehensive Output - Captures stdout, stderr, and exit codes

Context Management (v0.2.8)

• 💬 Conversation History - Maintains context across multiple interactions
• 📊 Token Tracking - Real-time monitoring of API usage and costs
• 💾 Session Save/Load - Preserve conversations for later continuation
• 🎯 Slash Commands - Quick access to history, stats, and session management

Model Selection & Optimization (v0.3.0)

• 🔄 Dynamic Model Switching - Switch between Haiku, Sonnet, and Opus mid-session
• 💰 Cost Optimization - Choose the right model for your task complexity
• 📊 Model Information - View current model, pricing, and capabilities
• ⚡ Flexible Performance - Balance between speed, capability, and cost

Configuration & Personalization (v0.3.1)

• ⚙️ User Configuration - Personal preferences via ~/.wyn360/config.yaml
• 📁 Project Configuration - Project-specific settings via .wyn360.yaml
• 🎯 Custom Instructions - Add your coding standards to every conversation
• 🏗️ Project Context - Help AI understand your tech stack automatically

Streaming Responses (v0.3.2)

• ⚡ Real-Time Output - See responses as they're generated, token-by-token
• 🎯 Immediate Feedback - Start reading while AI is still generating
• 📺 Progress Visibility - Watch code and explanations appear in real-time
• 💨 Faster Perceived Speed - Feels 2-3x faster with instant feedback

HuggingFace Integration (v0.3.3 - v0.3.13)

• 🤗 HuggingFace Authentication - Auto-login with HF_TOKEN environment variable
• 📝 README Generation - Create professional README files for Spaces
• 🚀 Space Creation - Create Streamlit/Gradio Spaces directly from CLI
• 📤 File Upload - Push your code to HuggingFace Spaces automatically
• 🎯 One-Command Deploy - From code to live Space in seconds

Automatic Test Generation (v0.3.18)

• 🧪 Test Generation - Automatically generate pytest tests for Python files
• 📊 Smart Analysis - Analyzes functions and classes to create comprehensive tests
• ⚡ Quick Setup - Creates test files with proper structure and imports
• 🎯 Code Coverage - Generates tests for edge cases and error handling

GitHub Integration (v0.3.22)

• 🔐 GitHub Authentication - Auto-login with GH_TOKEN/GITHUB_TOKEN
• 💾 Commit & Push - Stage, commit, and push changes with one command
• 🔀 Pull Requests - Create PRs with generated descriptions
• 🌿 Branch Management - Create, checkout, and merge branches seamlessly
• 🔄 Merge Operations - Smart branch merging with conflict detection

Web Search (v0.3.21, Enhanced v0.3.23)

• 🔍 Real-Time Search - Access current information from the web
• 🌦️ Weather Queries - Get current weather for any location
• 🔗 URL Reading - Fetch and summarize web page content
• 📚 Resource Finding - Find GitHub repos, libraries, and tutorials
• 📊 Current Data - Latest package versions, documentation, and trends
• 💰 Cost Effective - Limited to 5 searches per session, $10 per 1K searches

Browser Use / Direct Website Fetching (v0.3.24)

• 🌐 Direct URL Fetching - Fetch specific websites directly (not just search results)
• 📄 Full DOM Extraction - Get complete page content, not just search snippets
• 🧠 LLM-Optimized - Automatic conversion to clean, structured markdown
• ⚡ Smart Caching - 30-minute TTL cache for faster repeated access
• 📏 Smart Truncation - Preserves document structure while staying under token limits
• 🎯 Configurable - Adjust max tokens, cache settings, truncation strategy
• 💾 Cache Management - View stats, clear cache, manage storage

Vision Mode for Document Images (v0.3.30)

• 🖼️ Image Processing - Intelligently describe images in Word and PDF documents
• 📊 Chart Recognition - Extract insights from charts, graphs, and data visualizations
• 📐 Diagram Understanding - Analyze flowcharts, architecture diagrams, and technical illustrations
• 🖥️ Screenshot Analysis - Understand UI mockups and interface screenshots
• 💰 Cost Transparency - Separate tracking of vision API costs vs. text processing
• 🎯 Three Processing Modes - skip (default), describe (alt text only), vision (full AI processing)
• ⚡ Batch Processing - Efficient handling of documents with multiple images

🎮 Usage Examples

Starting a New Project

You: Create a FastAPI app with authentication

WYN360:
- Generates main.py with FastAPI setup
- Creates auth middleware
- Adds example routes
- Provides setup instructions

Updating Existing Code

You: Add logging to my script.py

WYN360:
- Reads current script.py
- Adds logging configuration
- Updates functions with log statements
- Preserves existing functionality

Executing Commands

You: Run the analysis script

WYN360: [Generates the command to run]

======================================================================
⚠️  COMMAND EXECUTION CONFIRMATION
======================================================================
Command: python analysis.py
Directory: /current/working/directory
Permissions: Full user permissions
======================================================================

>>> WAITING FOR YOUR RESPONSE <<<

Execute this command? (y/N): y

✅ Command executed successfully
[Shows output]

Note: When you see the confirmation prompt, the "thinking" spinner may still appear in the background. This is normal - just type y and press Enter to proceed, or N to cancel.

Web Search & Resource Finding

You: Find a popular GitHub repo for machine learning

WYN360: [Searches the web]

Here are some popular GitHub repositories for machine learning:

1. **tensorflow/tensorflow** ⭐ 185k stars
   https://github.com/tensorflow/tensorflow
   - End-to-end machine learning platform
   - Used by Google and industry leaders

2. **pytorch/pytorch** ⭐ 82k stars
   https://github.com/pytorch/pytorch
   - Deep learning framework by Meta
   - Popular in research and production

3. **scikit-learn/scikit-learn** ⭐ 59k stars
   https://github.com/scikit-learn/scikit-learn
   - Classic ML algorithms for Python
   - Great for beginners and experts

[Sources: GitHub search results, updated recently]

You: What's the weather in San Francisco?

WYN360: [Searches for current weather]

Current weather in San Francisco:
🌤️ 62°F (17°C), Partly cloudy
💨 Wind: 12 mph
💧 Humidity: 65%
🌅 Sunrise: 7:15 AM | Sunset: 5:02 PM

Source: [Weather service URL]

Direct Website Fetching

You: Read https://github.com/yiqiao-yin/deepspeed-course

WYN360: [Fetches the specific URL directly]

📄 **Fetched:** https://github.com/yiqiao-yin/deepspeed-course

# DeepSpeed Course Repository

## Overview
This repository contains comprehensive course materials for DeepSpeed training...

## Course Contents
1. **Distributed Training** - Multi-GPU training strategies
2. **Memory Optimization** - ZeRO optimization techniques
3. **Pipeline Parallelism** - Efficient model parallelism
4. **Performance Tuning** - Best practices and optimizations

[Full page content extracted and converted to markdown]

When to use what:

• fetch_website: When you have a specific URL → Read https://example.com
• Web Search: When you want to find something → Find ML repos

You: Show cache stats

WYN360: 📊 **Website Cache Statistics**

**Location:** `~/.wyn360/cache/fetched_sites`

**Total Entries:** 3
**Total Size:** 2.4 MB
**Expired Entries:** 0

**Cached URLs:**
- ✓ 5m old: https://github.com/yiqiao-yin/deepspeed-course
- ✓ 12m old: https://python.org/downloads
- ✓ 25m old: https://docs.anthropic.com

Document Reading with Vision Mode

You: Read quarterly_report.docx with vision mode

WYN360: [Extracts and processes document with image descriptions]

# Quarterly Report Summary

## Executive Overview
Revenue increased by 23% year-over-year, driven by strong performance in...

📊 **[Image 1]:** Bar chart showing quarterly revenue growth from Q1 to Q4.
Q4 shows the highest revenue at approximately $2.5M, representing a 23%
increase from Q3. All quarters show positive growth compared to the previous year.

## Market Analysis
Our market share expanded across all regions...

📐 **[Image 2]:** System architecture diagram depicting three layers:
frontend (React), API layer (FastAPI), and database (PostgreSQL).
Shows data flow from user requests through authentication middleware
to the backend services.

💰 **Vision API Cost:** $0.06 (2 images processed)
📊 **Token Usage:** 1,175 input tokens, 125 output tokens

[Use /tokens to see detailed cost breakdown]

Image Handling Modes:

• skip (default) - Ignore images entirely, no API calls
• describe - Extract alt text and captions only (no API calls)
• vision - Full Claude Vision API processing (costs ~$0.01-0.05 per image)

🎯 Commands

Chat Commands

Command	Description
<message>	Chat with the AI assistant
Enter	Submit your message
Ctrl+Enter	Add a new line (multi-line input)
exit or quit	End the session

Slash Commands (v0.2.8+)

Slash commands provide quick access to context management and model selection features:

Command	Description	Example
/clear	Clear conversation history and reset token counters	/clear
/history	Display conversation history in a table	/history
/save <file>	Save current session to JSON file	/save my_session.json
/load <file>	Load session from JSON file	/load my_session.json
/tokens	Show detailed token usage statistics and costs	/tokens
/model [name]	Show current model info or switch models (v0.3.0)	/model haiku
/config	Show current configuration (v0.3.1)	/config
/help	Display help message with all commands	/help

Example Usage:

You: Write a data analysis script
WYN360: [Creates analysis.py]

You: /tokens
[Shows token usage: 1,500 input tokens, 800 output tokens, $0.02 cost]

You: /model
[Shows current model: Sonnet 4, pricing: $3.00/$15.00 per M tokens]

You: /model haiku
✓ Switched to Haiku (claude-3-5-haiku-20241022)

You: /save my_analysis_session.json
✓ Session saved to: my_analysis_session.json

You: /clear
✓ Conversation history cleared. Token counters reset.

You: /load my_analysis_session.json
✓ Session loaded from: my_analysis_session.json

📚 Documentation

For comprehensive documentation:

• USE_CASES.md - Detailed use cases, examples, and workflows
• COST.md - Token usage, pricing, cost optimization, and max_tokens configuration
• SYSTEM.md - System architecture, design principles, and technical details
• ROADMAP.md - Feature roadmap and planned enhancements

🛠️ Development & Testing

Prerequisites

• Python >= 3.10
• Poetry (package manager)
• Anthropic API key

Setting Up Development Environment

1. Clone the repository:

git clone https://github.com/yiqiao-yin/wyn360-cli.git
cd wyn360-cli

2. Install Poetry (if not already installed):

curl -sSL https://install.python-poetry.org | python3 -

3. Install dependencies:

poetry install

This will:

• Create a virtual environment
• Install all production dependencies from pyproject.toml
• Install development dependencies (pytest, pytest-asyncio, pytest-mock)
• Install the package in editable mode

Running Tests

Run all tests with verbose output:

# Skip command confirmation prompts in tests
WYN360_SKIP_CONFIRM=1 poetry run pytest tests/ -v

Run tests with short traceback:

WYN360_SKIP_CONFIRM=1 poetry run pytest tests/ -v --tb=short

Run specific test file:

poetry run pytest tests/test_agent.py -v

Run specific test class:

poetry run pytest tests/test_utils.py::TestExecuteCommandSafe -v

Run with coverage report:

poetry run pytest tests/ --cov=wyn360_cli --cov-report=html

Test Structure

tests/
├── __init__.py
├── test_agent.py          # Agent and tool tests (46 tests)
├── test_cli.py            # CLI and slash command tests (33 tests)
├── test_config.py         # Configuration tests (25 tests)
└── test_utils.py          # Utility function tests (29 tests)
                           # Total: 133 tests

Expected Output

When all tests pass, you should see:

============================= test session starts ==============================
platform linux -- Python 3.10.12, pytest-8.4.2, pluggy-1.6.0
cachedir: .pytest_cache
rootdir: /home/workbench/wyn360-cli/wyn360-cli
configfile: pyproject.toml
plugins: asyncio-1.2.0, mock-3.15.1
collected 133 items

tests/test_agent.py::TestWYN360Agent::test_agent_initialization PASSED   [  1%]
tests/test_agent.py::TestHistoryManagement::test_clear_history PASSED    [ 18%]
tests/test_agent.py::TestStreaming::test_chat_stream_method_exists PASSED [ 40%]
tests/test_cli.py::TestSlashCommands::test_clear_command PASSED          [ 42%]
tests/test_config.py::TestWYN360Config::test_default_values PASSED       [ 60%]
...
tests/test_utils.py::TestExecuteCommandSafe::test_execute_python_script PASSED [100%]

============================== 133 passed in 2.64s

Building and Publishing

Build the package:

poetry build

This creates:

• dist/wyn360_cli-X.Y.Z.tar.gz (source distribution)
• dist/wyn360_cli-X.Y.Z-py3-none-any.whl (wheel)

Publish to PyPI:

poetry publish

Build and publish in one command:

poetry build && poetry publish

Version Management

Update version in these files:

• pyproject.toml - version = "X.Y.Z"
• wyn360_cli/__init__.py - __version__ = "X.Y.Z"
• USE_CASES.md - Update changelog and version number

Development Workflow

1. Create a feature branch:

git checkout -b feature/your-feature-name

2. Make changes and test:

# Make your changes
WYN360_SKIP_CONFIRM=1 poetry run pytest tests/ -v

3. Update version and documentation:

# Update version in pyproject.toml, __init__.py, USE_CASES.md

4. Commit and push:

git add .
git commit -m "feat: your feature description"
git push origin feature/your-feature-name

5. Build and publish:

poetry build && poetry publish
git push origin main

🧪 Environment Variables

Variable	Description	Default
ANTHROPIC_API_KEY	Anthropic API key (required for Anthropic API mode)	None
CLAUDE_CODE_USE_BEDROCK	Enable AWS Bedrock mode (set to 1 to enable)	0 (disabled)
AWS_ACCESS_KEY_ID	AWS access key ID (required for Bedrock mode)	None
AWS_SECRET_ACCESS_KEY	AWS secret access key (required for Bedrock mode)	None
AWS_SESSION_TOKEN	AWS session token (optional, for temporary credentials)	None
AWS_REGION	AWS region for Bedrock (e.g., us-west-2)	us-east-1
ANTHROPIC_MODEL	Model ARN for Bedrock (e.g., us.anthropic.claude-sonnet-4-20250514-v1:0)	Auto-selected
HF_TOKEN or HUGGINGFACE_TOKEN	HuggingFace API token (optional, for HF features)	None
GH_TOKEN or GITHUB_TOKEN	GitHub access token (optional, for GitHub features)	None
WYN360_SKIP_CONFIRM	Skip command execution confirmations	0 (disabled)

Setup Example (Anthropic API):

# .env file
ANTHROPIC_API_KEY=your_anthropic_key
GH_TOKEN=ghp_your_github_token
HF_TOKEN=hf_your_huggingface_token
WYN360_SKIP_CONFIRM=0

Setup Example (AWS Bedrock):

# .env file
CLAUDE_CODE_USE_BEDROCK=1
AWS_ACCESS_KEY_ID=your_access_key
AWS_SECRET_ACCESS_KEY=your_secret_key
AWS_SESSION_TOKEN=your_session_token
AWS_REGION=us-west-2
ANTHROPIC_MODEL=us.anthropic.claude-sonnet-4-20250514-v1:0
GH_TOKEN=ghp_your_github_token
HF_TOKEN=hf_your_huggingface_token
WYN360_SKIP_CONFIRM=0

Set WYN360_SKIP_CONFIRM=1 to skip confirmation prompts (useful for testing or automation).

📋 Requirements

• Python >= 3.10, < 4.0
• Dependencies (automatically installed):
  • click>=8.1.0 - CLI framework
  • pydantic-ai>=1.13.0 - AI agent framework with web search support
  • anthropic>=0.39.0 - Anthropic API client
  • rich>=13.0.0 - Terminal formatting
  • python-dotenv>=1.2.1 - Environment variable management
  • prompt-toolkit>=3.0.0 - Advanced input handling
  • pyyaml>=6.0.0 - Configuration file support
  • huggingface-hub>=0.20.0 - HuggingFace integration
  • crawl4ai>=0.7.6 - LLM-optimized web crawler for browser use

Note: Browser use requires Playwright browser binaries (~200MB):

playwright install chromium

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Run tests (WYN360_SKIP_CONFIRM=1 poetry run pytest tests/ -v)
4. Commit your changes (git commit -m 'feat: add amazing feature')
5. Push to the branch (git push origin feature/amazing-feature)
6. Open a Pull Request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

👤 Author

Yiqiao Yin

• Email: [e-mail]
• GitHub: @yiqiao-yin

🙏 Acknowledgments

• Built with Anthropic Claude - Advanced AI assistant
• Powered by pydantic-ai - Python agent framework
• CLI framework by Click
• Terminal UI by Rich

🔗 Links

• PyPI: https://pypi.org/project/wyn360-cli/
• GitHub: https://github.com/yiqiao-yin/wyn360-cli
• Documentation:
  • USE_CASES.md - Usage examples and workflows
  • COST.md - Pricing and token configuration
  • SYSTEM.md - Architecture overview
• Get API Key: https://console.anthropic.com/

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Current Version: 0.3.48 Last Updated: November 16, 2025