henchman-ai 0.3.4

A model-agnostic AI agent CLI - your AI henchman for the terminal

Henchman-AI

Your AI Henchman for the Terminal - A Model-Agnostic AI Agent CLI

Henchman-AI is a powerful, terminal-based AI agent that supports multiple LLM providers (DeepSeek, OpenAI, Anthropic, Ollama, and more) through a unified interface. Inspired by gemini-cli, built for extensibility and production use.

✨ Features

• 🤝 Multi-Agent Dev Team: Orchestrate a team of specialists (Architect, Coder, Reviewer, Tester, etc.) to solve complex engineering tasks.
• 🔄 Model-Agnostic: Support any LLM provider through a unified abstraction layer
• 🐍 Pythonic: Leverages Python's async ecosystem and rich libraries for optimal performance
• 🔌 Extensible: Plugin system for tools, providers, and custom commands
• 🚀 Production-Ready: Proper error handling, comprehensive testing, and semantic versioning
• 🛠️ Tool Integration: Built-in support for file operations, web search, code execution, and more
• ⚡ Fast & Efficient: Async-first design with intelligent caching and rate limiting
• 🔒 Secure: Environment-based configuration and safe execution sandboxing

📦 Installation

From PyPI (Recommended)

pip install henchman-ai

From Source

git clone https://github.com/MGPowerlytics/henchman-ai.git
cd henchman-ai
pip install -e ".[dev]"

With uv (Fastest)

uv pip install henchman-ai

🚀 Quick Start

1. Set your API key (choose your preferred provider):

   export DEEPSEEK_API_KEY="your-api-key-here"
   # or
   export OPENAI_API_KEY="your-api-key-here"
   # or
   export ANTHROPIC_API_KEY="your-api-key-here"
   

2. Start the CLI:

   henchman
   

3. Or run with a prompt directly:

   henchman --prompt "Explain this Python code" < example.py
   

🏗️ Architecture

Henchman-AI features a modular, component-based architecture designed for maintainability and extensibility. The core interactive REPL (Read-Eval-Print Loop) has been refactored into specialized components:

REPL Component Architecture

┌─────────────────────────────────────────────────────────────┐
│                     REPL (Orchestrator)                      │
│  ┌──────────┐  ┌───────────┐  ┌─────────────┐  ┌─────────┐  │
│  │  Input   │  │  Output   │  │   Command   │  │  Tool   │  │
│  │ Handler  │◄─┤  Handler  │◄─┤  Processor  │◄─┤Executor │  │
│  └──────────┘  └───────────┘  └─────────────┘  └─────────┘  │
│         │             │              │               │       │
│         ▼             ▼              ▼               ▼       │
│  ┌───────────────────────────────────────────────────────┐  │
│  │                Multi-Agent Orchestrator               │  │
│  └───────────────────────────────────────────────────────┘  │
└─────────────────────────────────────────────────────────────┘

Component Responsibilities

1. REPL (Orchestrator): Main coordination class (406 lines, down from 559)

   • Initializes and connects all components
   • Manages the main interaction loop
   • Delegates work to specialized components
   • Maintains backward compatibility

2. InputHandler: User input processing

   • Manages prompt sessions with history
   • Handles @file expansion and shell command detection
   • Processes keyboard interrupts and EOF
   • Validates and sanitizes user input

3. OutputHandler: Console output and status display

   • Manages rich console output and formatting
   • Displays status bars and tool information
   • Shows welcome/goodbye messages
   • Handles event streaming and turn status

4. CommandProcessor: Slash command execution

   • Processes /quit, /clear, /help, and other commands
   • Manages command registry and argument parsing
   • Delegates to specialized command handlers
   • Provides command completion and validation

5. ToolExecutor: Tool execution and agent coordination

   • Executes tool calls from agents
   • Manages tool confirmation requests
   • Processes agent event streams
   • Handles tool iteration limits and cancellation

Benefits of Component Architecture

• Single Responsibility: Each component has a clear, focused purpose
• Testability: Components can be tested independently (100% test coverage for core components)
• Maintainability: Smaller, focused classes are easier to understand and modify
• Extensibility: New components can be added without modifying the REPL
• Performance: Business logic moved out of REPL, leaving only orchestration

📖 Usage Examples

Basic Commands

# Show version
henchman --version

# Show help
henchman --help

# Interactive mode (default)
henchman

# Headless mode with prompt
henchman -p "Summarize the key points from README.md"

# Specify a provider
henchman --provider openai -p "Write a Python function to calculate fibonacci"

# Use a specific model
henchman --model gpt-4-turbo -p "Analyze this code for security issues"

File Operations

# Read and analyze a file
henchman -p "Review this code for bugs" < script.py

# Process multiple files
cat *.py | henchman -p "Find common patterns in these files"

# Generate documentation
henchman -p "Create API documentation for this module" < module.py > docs.md

⚙️ Configuration

Henchman-AI uses hierarchical configuration (later settings override earlier ones):

1. Default settings (built-in sensible defaults)
2. User settings: ~/.henchman/settings.yaml
3. Workspace settings: .henchman/settings.yaml (project-specific)
4. Environment variables (highest priority)

Example settings.yaml

# Provider configuration
providers:
  default: deepseek  # or openai, anthropic, ollama
  deepseek:
    model: deepseek-chat
    base_url: "https://api.deepseek.com"
    temperature: 0.7
  openai:
    model: gpt-4-turbo-preview
    organization: "org-xxx"

# Tool settings
tools:
  auto_accept_read: true
  shell_timeout: 60
  web_search_max_results: 5

# UI settings
ui:
  theme: "monokai"
  show_tokens: true
  streaming: true

# System settings
system:
  cache_enabled: true
  cache_ttl: 3600
  max_tokens: 4096

Environment Variables

# Provider API keys
export DEEPSEEK_API_KEY="sk-xxx"
export OPENAI_API_KEY="sk-xxx"
export ANTHROPIC_API_KEY="sk-xxx"

# Configuration overrides
export HENCHMAN_DEFAULT_PROVIDER="openai"
export HENCHMAN_DEFAULT_MODEL="gpt-4"
export HENCHMAN_TEMPERATURE="0.5"

🔌 Supported Providers

Provider	Models	Features
DeepSeek	deepseek-chat, deepseek-coder	Free tier, Code completion
OpenAI	gpt-4, gpt-3.5-turbo, etc.	Function calling, JSON mode
Anthropic	claude-3-opus, claude-3-sonnet	Long context, Constitutional AI
Ollama	llama2, mistral, codellama	Local models, Custom models
Custom	Any OpenAI-compatible API	Self-hosted, Local inference

🛠️ Development

Setup Development Environment

# Clone and install
git clone https://github.com/MGPowerlytics/henchman-ai.git
cd henchman-ai
python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate
pip install -e ".[dev]"

Running Tests

# Run all tests
pytest

# Run with coverage
pytest --cov=henchman --cov-report=html

# Run specific test categories
pytest tests/unit/ -v
pytest tests/integration/ -v

Code Quality

# Linting
ruff check src/ tests/
ruff format src/ tests/

# Type checking
mypy src/

# Security scanning
bandit -r src/

Building and Publishing

# Build package
hatch build

# Test build
hatch run test

# Publish to PyPI (requires credentials)
hatch publish

📚 Documentation

Online Documentation

For detailed documentation, see the docs directory in this repository:

• Getting Started
• Configuration Guide
• API Reference
• Tool Development
• Provider Integration
• MCP Integration
• Extensions

Building Documentation Locally

You can build and view the documentation locally:

# Install documentation dependencies
pip install mkdocs mkdocs-material mkdocstrings[python]

# Build static HTML documentation
python scripts/build_docs.py

# Or serve documentation locally (live preview)
mkdocs serve

The documentation will be available at http://localhost:8000 when served locally.

🤝 Contributing

We welcome contributions! Please see CONTRIBUTING.md for details.

🐛 Reporting Issues

Found a bug or have a feature request? Please open an issue on GitHub.

📄 License

Henchman-AI is released under the MIT License. See the LICENSE file for details.

🙏 Acknowledgments

• Inspired by gemini-cli
• Built with Rich for beautiful terminal output
• Uses Pydantic for data validation
• Powered by the Python async ecosystem

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Happy coding with your AI Henchman! 🦸‍♂️🤖