In Xcode 26.3 Apple introduced deep agentic coding support, integrating with popular agentic coding tools from OpenAI and Anthropic. Using the Codex agent allows us to benefit from the productivity gains of agentic coding, right within the IDE that we are used to using every day. However, this integration can breakdown with inscrutable errors through no fault of our own. In this article we will see how to resolve the situation and get back up and running. Read more…