**Intact Gift Giving Condition book**

This book is built on those APIs from chapter one and treats the sandbox as the trust boundary that production agents need. On April 15, 2026 the OpenAI Agents SDK shipped a new architecture: native sandbox execution, a model-native harness, subagent fan-out across isolated containers, and code mode with apply_patch. You build a real production system end to end: an Incident triage agent platform for a SaaS operations team that classifies alerts, inspects logs in parallel sandboxes, applies minimal runbook patches, and produces operator-facing recommendations under guardrails. The same application runs through all 11 chapters, so every new pattern lands on a working system instead of a toy snippet.