OpenAI Codex Desktop App: Plan/Goal Modes, Plugins, Multi-Agent Workflows & UI Annotation Demo
The video showcases OpenAI’s Codex desktop app, which the creator calls OpenAI’s best product and a premier desktop experience for building with AI. It highlights core features like Plan Mode for interviewing and planning, Goal Mode for long-running open-ended tasks, and a plugin system (including built-in browser and Chrome plugins) that supports both development and office work. The app integrates project selection with local or cloud execution, work trees for parallel repo work, usage visibility, and developer settings like choosing a file editor. The creator demonstrates multi-agent workflows by having Codex spawn a chief of staff and three developers to build a Next.js neo-brutalist SaaS landing page, plus automations that run on schedules. They also emphasize fast browser interactions with CDP support, app-shot context capture, and an annotation feature that sends screenshots, DOM elements, and feedback to agents for real-time UI fixes.
00:00 Why Codex Desktop
00:21 Core Modes Overview
00:46 Plugins and Projects
01:31 Settings and Computer Use
02:08 Browser and App Shots
02:45 Building a Next.js Demo
03:15 Managing Agent Fleets
04:04 Automations and Mentions
04:48 Browser Annotations Workflow
06:14 Multi Threaded Control Center
06:42 Wrap Up and Next Steps
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