Zero CLI

AI coding agent for the terminal. Multi-model support with Claude, Gemini, GLM, Qwen, DeepSeek and more.

Install

# Recommended (faster)
bun add -g @paean-ai/zero-cli

# Or via npm
npm install -g @paean-ai/zero-cli

Quick Start

# Login to Paean AI
zero login

# Start a session
zero

# Or run a one-shot prompt
zero -p "explain this codebase"

Model Selection

Zero maps three capability tiers — opus (flagship), sonnet (standard), and haiku (fast) — to any supported model. Configure via environment variables:

# Use GLM-5 as the flagship model
export ANTHROPIC_DEFAULT_OPUS_MODEL=glm-5

# Use Gemini 3 Flash as the standard model
export ANTHROPIC_DEFAULT_SONNET_MODEL=gemini-3-flash-preview

# Use Gemini 3.1 Flash Lite as the fast model
export ANTHROPIC_DEFAULT_HAIKU_MODEL=gemini-3.1-flash-lite-preview

Or switch models in-session with /model.

Supported Models

| Model | Provider | Tier | |-------|----------|------| | claude-sonnet-4-6 | Claude (Vertex AI) | Standard | | claude-opus-4-5 | Claude (Vertex AI) | Flagship | | gemini-3-flash-preview | Google AI Studio | Standard | | gemini-3.1-flash-lite-preview | Google AI Studio | Fast | | glm-5 | ZhipuAI (DashScope) | Flagship | | glm-4.7 | ZhipuAI (DashScope) | Flagship | | glm-4.5-air | ZhipuAI (DashScope) | Fast | | qwen3-max | Alibaba (DashScope) | Flagship | | qwen-plus | Alibaba (DashScope) | Standard | | deepseek-v3.2 | DeepSeek (DashScope) | Standard | | deepseek-r1 | DeepSeek (DashScope) | Flagship | | kimi-k2.5 | Moonshot (DashScope) | Standard |

Configuration

Zero stores config in ~/.zero/. Key environment variables:

| Variable | Description | |----------|-------------| | ANTHROPIC_API_KEY | API key (Paean AI or Anthropic) | | ANTHROPIC_BASE_URL | API base URL (defaults to Paean AI) | | ANTHROPIC_MODEL | Override the default model | | ANTHROPIC_DEFAULT_OPUS_MODEL | Model for the "opus" tier | | ANTHROPIC_DEFAULT_SONNET_MODEL | Model for the "sonnet" tier | | ANTHROPIC_DEFAULT_HAIKU_MODEL | Model for the "haiku" tier |

License

MIT