Toolpack SDK is a completely Open Source unified TypeScript SDK for building AI-powered applications. Use OpenAI, Anthropic, Gemini, or Ollama, even custom providers with one API. - 77 built-in tools for file ops, git, databases, web scraping, code analysis, and shell commands - Workflow engine that plans and executes tasks step-by-step - Agent & Chat modes, plus you can create custom modes - Custom provider API to add other LLMs - Custom tools support - Interactive terminal CLI