#codex

OpenAI presents ChatGPT subscription access for Codex as an OAuth/access-token credential path for Codex clients, distinct from OpenAI Platform API-key access.

Codex's Rust prompt crate renders specialized prompt text from typed runtime state, separating permissions, review, goals, compaction, realtime, and patch-tool instructions.

OpenAI's Codex guide argues that Codex performance depends as much on harness prompt/tool design as on model choice: prompts should emphasize autonomy, efficient exploration…

OpenAI's harness engineering essay argues that agent-first software development shifts engineering effort away from hand-writing code and toward designing the repositories…