Hugging Face introduces Tau, an open-source educational Python project designed to demystify how AI coding agents are built.

Tau is an open-source, educational Python project by Hugging Face built to demystify AI coding agents by making their architecture, tools, and execution loops fully transparent and readable. Designed both as a functional terminal tool and a reference codebase, Tau breaks down agent functionality into three modular components: tau_ai for streaming and provider-agnostic model integration, tau_agent for core agent loops and session management, and tau_coding for the CLI/TUI interface and file/shell execution. Supporting multiple LLM providers including OpenAI, Anthropic, and Hugging Face, Tau enables developers to learn, inspect, and customize how autonomous coding assistants analyze codebases and execute tasks directly from the command line.