OpenAI Workshop: Building Agentic Systems with Codex

X postLuna TechResource

Luna Tech highlights a one-hour OpenAI workshop demonstrating how to build agentic systems with Codex from scratch, covering subagents, prompt patterns, persistent goals, and automated loops.

Key points

  1. 00:36: Deep dive into Codex architectures, focusing on agents and subagents.
  2. 11:34: Prompting patterns tailored for agentic Codex workflows.
  3. 20:06: Managing long-running agents using the '/goal' command.
  4. 30:03: Building and assigning custom skills to Codex agents.
  5. 41:28: Implementing self-improving loops with automated commands.
  6. According to Luna Tech, recovering from context loss or failed subagents in the '/goal' pattern still requires manual intervention.

Why it matters

Orchestrating autonomous agents is a key engineering challenge in modern AI development. Practical breakdowns of subagent architectures and lifecycle management help teams design more reliable coding pipelines.

Analysis

The workshop offers a practical roadmap for expanding Codex usage into multi-agent systems. In follow-up comments, the author notes that while building individual agents is straightforward, orchestration and handling failure states remain the primary obstacles that still require manual supervision.

Original post

Luna Tech

@LunaTechAI · 10 September 2026

OpenAI just dropped a 1-hour workshop on how to build agentic systems with Codex from scratch. • 00:36 - deep dive into Codex: agents, subagents • 11:34 - Codex agentic prompting patterns • 20:06 - long-running Codex agents with /goal • 30:03 - building skills for Codex t.co/rApUscmTNh

1.7k likes53 replies4k bookmarks151.7k views

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More posts in the thread (5)
  1. @maxpostingx Thank you so much! Really appreciate you taking the time to share this. 🙌❤️
  2. @hayyantechtalks Definitely worth checking out. A focused 1-hour workshop can teach a lot and help you get more out of Codex.
  3. @ElizabethAI_1 Thank you so much! ❤️ Really appreciate the kind words. I’m glad you’re finding the content useful and enjoyable!
  4. @catmanyau Good question. From what I understand, recovery after context loss or a failed subagent still needs some manual intervention—the /goal pattern doesn’t fully restart everything automatically.
  5. @chenzhangreal 100% 😂 Building the agents is one thing, getting them to work together smoothly is the real challenge.
Selected replies (5)
  • @sanjayshetty @LunaTechAI where is the original video posted?
  • @ElizabethAI_1 @LunaTechAI Honestly, I really appreciate the effort you put into sharing things like this. It’s not just about the information itself, but the way you present it makes it much more enjoyable to read. Keep doing what you’re doing—you’re creating something genuinely valuable. ❤️
  • @CaptCrankyPants @LunaTechAI "JusT DroPped" 😬 this came out in May 😂 also share the source of the video if youa re going to steal it to reupload t.co/JTONYonsrM
  • @maxpostingx @LunaTechAI Really enjoyed this. Simple, thoughtful, and beautifully put together.
  • @catmanyau @LunaTechAI does the /goal pattern at 20:06 include recovery after context loss or a failed subagent, or does the human still have to restart it manually?

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Summary generated by AI (Gemini 3.8 Flash, 27 September 2026). It may contain errors – the original source is authoritative.

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