simple-claude-cli 0.0.3

A simple command-line interface for interacting with Claude AI models
simple-claude-cli-0.0.3 is not a library.

simple-claude-cli

A simple command-line interface for interacting with Claude AI models using the Anthropic API.

Overview

simple-claude-cli allows you to easily interact with Claude AI directly from your terminal. It uses the official Anthropic AI SDK to connect to Claude's API and stream responses in real-time.

Features

  • Real-time streaming of Claude's responses
  • Colored terminal output for better readability
  • Simple, intuitive interface
  • Uses Claude 3 Haiku by default
  • Customizable system prompts and predefined personas
  • Conversation history - maintains context throughout your session

Prerequisites

Installation

From crates.io

Install directly from crates.io:

cargo install simple-claude-cli

This will install the claude command in your PATH.

From Source

Clone the repository and build the project:

git clone https://github.com/katsuhirohonda/simple-claude-cli.git
cd simple-claude-cli
cargo build --release

The compiled binary will be available at target/release/claude.

Usage

  1. Set your Anthropic API key as an environment variable:
export ANTHROPIC_API_KEY=your_api_key_here
  1. Run the application:
claude

  1. Enter your questions or prompts as in a normal conversation.

  2. Type exit, quit, or press Enter on an empty line to end the conversation.

Configuration

You can customize Claude's behavior using environment variables:

Change the Claude model

export CLAUDE_MODEL="claude-3-7-sonnet-20250219"

By default, the application uses claude-3-5-haiku-latest.

Custom system prompts

You can set a custom system prompt:

export CLAUDE_SYSTEM_PROMPT="You are a cybersecurity expert focused on threat analysis."

Predefined personas

Choose from several predefined personas:

export CLAUDE_PERSONA="engineer"  # Software engineering expert

Available personas:

  • engineer - Software engineering expert
  • writer - Creative writer with excellent language skills
  • scientist - Scientist with expertise in various fields
  • teacher - Patient teacher who explains concepts clearly
  • chef - Professional chef with culinary knowledge
  • therapist - Compassionate therapist who listens carefully

You can also set a custom persona directly:

export CLAUDE_PERSONA="You are a financial advisor specializing in retirement planning."

If neither CLAUDE_PERSONA nor CLAUDE_SYSTEM_PROMPT is set, Claude will use a default helpful assistant prompt.

Dependencies

  • anthropic-ai-sdk: Official Anthropic AI SDK for Rust
  • tokio: Asynchronous runtime for Rust
  • tracing: Logging and diagnostics
  • colored: Terminal text coloring

License

MIT License

Contributing

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