Codex, Behind the Harness
Official Schedule Context
- Date/time: 2026-07-01 · 1:30pm-1:50pm
- Track/room: Agentic Engineering · Track 8
- Speaker(s): Dominik Kundel
- Session type/status: session · confirmed
Official Description
Agents have evolved a lot in the last year both in capabilities and in the overall structure.
Increasingly sandbox-powered coding agents are breaking out to do general purpose work. In this
talk we’ll be taking apart the open-source Codex agent harness. Understand how it works, what makes
it so suitable to do work beyond coding tasks, how it handles key aspects like context management,
tools and file system access. We’ll also tie these back to concrete actions you can take to bring
these patterns into your own agents, whether you are building on top of the Codex agent or building
your own.
Related YouTube Video
Building voice agents with OpenAI — Dominik Kundel, OpenAI (speaker-match related prior/adjacent AI Engineer video; captions: English auto-captions).
Transcript Status
Related video transcript availability: English auto-captions. Treat this as supporting context, not a recording of this exact scheduled session unless later confirmed. Not fetched yet.
People
Notes
- Pending transcript synthesis when an official recording or confirmed matching video is available.
Supporting Slides
- youtube iXhba366fQc slides — extracted from the related public AI Engineer video.
Slide Evidence
- Slide-only cropped deck: youtube iXhba366fQc dense slides (4 viable slide images).
- Related slide/OCR pages:
- youtube iXhba366fQc dense slides
- youtube iXhba366fQc reconstructed slides
- youtube iXhba366fQc slides
- Slide-derived terms:
complex,fair,voice,parts,traces,world,than,personalized,conversations,dealing,support,okct,aine,ronteto,mdaily,augmentcode,workos,started