Overview

OpenAI Codex CLI & Agents SDK for Developers: Create, Test, and Ship Agentic AI Systems that Boost Productivity and Reliability How do you move from experimenting with AI in the browser to building agents that live in your terminal, follow your rules, and scale across real production workflows? This book gives developers, AI engineers, and DevOps professionals a direct path from local prototypes to fully governed, testable, and observable AI systems, without guesswork or hype. In a world where AI agents are redefining software development, OpenAI Codex CLI & Agents SDK for Developers delivers the hands-on clarity professionals need to work CLI-first. You'll learn how to use OpenAI's Codex CLI for local iteration, code modification, and automation, then elevate your work using the Agents SDK to create durable, testable agent systems. Each concept is anchored in practical examples you can run immediately, guiding you from setup to policy enforcement, evaluation, telemetry, and CI/CD integration. This is not a book about abstract theory. It's about building real agentic systems that you can reason about, test, and trust. Through structured workflows, reproducible examples, and consistent patterns, you'll learn how to make AI work alongside you, not above you. You'll gain the skills to: Install, configure, and use the Codex CLI to create agents directly from your project directory. Write, test, and govern agents using the OpenAI Agents SDK in both TypeScript and Python. Build reproducible local development environments using containers and transcripts. Integrate tracing, observability, and evaluation metrics for performance and cost tracking. Apply policy modules, approval systems, and guardrails for safe and compliant automation. Design scalable, multi-agent architectures that balance autonomy with control. Every chapter is built around real engineering patterns, clear, measurable, and production-ready. By the final section, you'll not only understand how these systems work but also have the confidence to build your own AI-enabled workflows that enhance productivity and reduce operational risk. Whether you're automating development tasks, orchestrating agents across services, or introducing AI to your enterprise stack, this guide equips you with the practical tools and mental models to do it right, safely, reliably, and at scale. Build smarter, faster, and safer with AI agents that actually work. Get your copy and start shipping the next generation of agentic systems today.

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