Codex CLI

Description

Welcome to the Leanpub Launch video for Codex CLI: Agentic Engineering from First Principles https://leanpub.com/codex-cli by Daniel Vaughan! About the Book Codex CLI is the most comprehensive guide to agentic software engineering with OpenAI's command-line coding agent. Across 32 chapters, you'll move from first principles to advanced orchestration patterns — covering prompting, AGENTS.md configuration, MCP servers, hooks, skills, sub-agents, worktrees, CI/CD integration, security hardening, and enterprise deployment. Whether you're a solo developer looking to multiply your output or an engineering lead rolling out agentic workflows across a team, this book gives you the mental models and practical techniques to work effectively with AI coding agents. Written by Daniel Vaughan, drawing on real-world experience and community insights, every chapter includes learning objectives, worked examples, and hands-on exercises. About the Author Daniel Vaughan is a technology leader and software architect specialising in agentic AI. He helps organisations turn AI investment into production systems that work correctly from the start: not just faster delivery, but higher quality at the same cost. With 25 years across enterprise, startup, and academic settings, his focus is now entirely on the point where AI stops being an experiment and starts becoming core to the organisation. He leads a global Forward Deployed Engineering practice, building the teams and operating models that take AI from prototype to production inside complex enterprise environments: legacy systems, cautious security teams, and real users who need to trust the output. His work centres on the lean three-person agentic pod, a shared architect, two engineers, and a team of coding agents. The model is designed to compound rather than scale linearly, so each engagement makes the next one faster, leaner, and more predictable. Most AI projects stall between prototype and production. Daniel's work exists to close that gap. Follow the author here! https://x.com/danielvaughan Thank you for watching, please like and leave a comment, we'd love to hear from you! Please Subscribe and Follow! YouTube: https://www.youtube.com/leanpub X: https://x.com/leanpub Instagram: https://www.instagram.com/leanpub Facebook: https://www.facebook.com/leanpub Create Your Own Leanpub Book! You can create your own book anytime here: https://leanpub.com/create/book Here's the tutorial showing how to write and publish a Leanpub book in your browser (it's free!): http://help.leanpub.com/en/articles/2932527-getting-started-writing-a-book-in-the-web-browser-writing-mode If you're a Leanpub author and you'd like to submit your own Launch video for us to publish, or if you'd like to record a Launch video with Len, please go here: https://leanpub.com/launch. #books #leanpublishing #selfpublishing #leanpub #writing #ai #softwareengineering