https://www.infoq.com InfoQ API-Design feed https://www.infoq.com/news/2026/02/opanai-codex-app-server/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=API-Design <img src="https://res.infoq.com/news/2026/02/opanai-codex-app-server/en/headerimage/OpenAI-Codex-App-Server-Header-1771326172649.jpeg"/><p>OpenAI has recently published a detailed architecture description of the Codex App Server, a bidirectional protocol that decouples the Codex coding agent's core logic from its various client surfaces. The App Server now powers every Codex experience, including the CLI, the VS Code extension, and the web app, through a single, stable API.</p> <i>By Eran Stiller</i> SDK Agents API-Design OpenAI Model Context Protocol (MCP) Architecture & Design Development news Tue, 17 Feb 2026 11:45:00 GMT https://www.infoq.com/news/2026/02/opanai-codex-app-server/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=API-Design Eran Stiller 2026-02-17T11:45:00Z /news/2026/02/opanai-codex-app-server/en