Agentic Design Patterns – Python Edition, from the Codex Codebase
While reading Agentic Design Patterns by Antonio Gulli, I wanted to see how these patterns look in real code. I cloned the OpenAI Codex repo (the open-source AI coding assistant that recently trended on HN) — but it was in Rust. So, I used an Cursor to help me extract and translate 18+ agentic patterns from Codex’s codebase into Python. That small experiment turned into a full open-source guide: GitHub: Codex Agentic Patterns https://github.com/artvandelay/codex-agentic-patterns Each pattern comes with: A short explanation and code sample A runnable exercise and agent…
Agentic Design Patterns – Python Edition, from the Codex Codebase launched on October 7, 2025 with 5 votes and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Learn to build production AI agents through real-world patterns extracted from OpenAI Codex CLI. This guide bridges theory and practice by analyzing 100,000+ lines of production Rust code from OpenAI's battle-tested agent system. Each pattern includes Python implementations, real-world examples, and hands-on exercises you can runfrom artvandelay.github.io
In the maker’s words, at launch
While reading Agentic Design Patterns by Antonio Gulli, I wanted to see how these patterns look in real code. I cloned the OpenAI Codex repo (the open-source AI coding assistant that recently trended on HN) — but it was in Rust. So, I used an Cursor to help me extract and translate 18+ agentic patterns from Codex’s…
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