When Codex uses Bedrock's OpenAI-compatible API, switching models can break requests: the selected model changes, but the provider still points to the same AWS Region. The failure appears both when using Codex directly and when operating it through the ChatGPT app. In both cases, Codex makes the model API request. A …

Introduction Every agent session starts amnesic. You explain your deployment topology to Claude Code on Monday, and on Tuesday Codex asks the same question. You tell one agent that Aurora MySQL cannot run your vector workload, and the next agent cheerfully proposes it. The knowledge that actually compounds — decisions …