How OpenAI Codex Works - ByteByteGo Newsletter

kept by eddie mar 19

OpenAI's Codex agent relies on an orchestration layer handling prompt assembly, context management, and a custom protocol for multi-surface support.

Unlocking the Codex harness: how we built the App Server
OpenAI introduced the Codex App Server, a bidirectional JSON-RPC protocol that exposes the full Codex agent harness for embedding in IDEs, web apps, and terminal clients.
also on VS Code, Codex, OpenAI, #ai-coding, #software-engineering, #developer-tools
API for Cursor - Cursor Composer in Any Coding Agent
API for Cursor is an open-source macOS app that exposes Cursor's Composer as a local OpenAI-compatible API for use in any coding agent.
also on VS Code, Codex, #open-source, #ai-coding, #developer-tools
The Anatomy of an Agent Harness
An agent's usefulness comes from its 'harness'—the code, tools, and orchestration around the model—which must be engineered for tasks like durable storage, code execution, and context management.
also on MCP, Codex, #ai-agents, #ai-coding, #software-engineering, #developer-tools
The Wrapper and the Code - by Iris - Adaptive Software
Apple's enforcement of App Store rules against AI coding apps exposes a fundamental incompatibility between static review and adaptive software, requiring a new distribution paradigm.
also on MCP, OpenAI, #ai-coding, #software-engineering, #developer-tools