Download Code with Antonio - Build Your Own Claude Code For Free

“Build Your Own Claude Code” is a comprehensive developer-focused tutorial and cohort program created by popular software engineering educator Code with Antonio. The project teaches developers how to demystify, build, and deploy an AI coding agent from scratch that functions right inside the terminal, heavily inspired by Anthropic’s Claude Code CLI.
Core Architecture: How It Works
The project teaches you how to map out a complete terminal-based engineering loop, bypassing the conventional web abstractions we rely on like the DOM or hooks.
The Agentic Loop: The center of the project is the think-act-observe cycle. The agent loops through reading files, deciding on actions, running tools, observing the output, and correcting its own errors.
System Capabilities: The tool features file system interaction (reading/writing codebase files), bash command execution to run tests and linters, and persistent context memory across chat turns.
The Terminal Stack: You build a real terminal UI layer (using technologies like OpenTUI or the Rich Python library), a local server architecture (like Hono), Server-Sent Events (SSE) for real-time text streaming, and a browser-to-CLI OAuth authentication flow.
Source: https://www.codewithantonio.com/cohorts/build-your-own-claude-code-2026-05/
Password: cms.ddpanda.org