Codex Skills

A codex project documentation skill is a portable, SKILL.md-based capability that lets an AI coding agent plan work as traceable YAML contracts and record every execution step, so the reasoning behind a project survives as an auditable archive instead of vanishing into a chat log. Project Orrery implements exactly this: it turns high-level goals into executable, engineered workflows whose state lives in a .agent-work/ directory with plans/, reports/, and completed/ subdirectories. Because the skill is built on the open agent skills standard, the same skill works in Codex CLI, Claude Code, Cursor, and Gemini CLI. ...

OpenAI Codex Skills are reusable, self-contained packages that encode a developer workflow once and let Codex invoke that workflow on demand — without re-prompting. If you’ve ever corrected Codex on the same PR review pattern three times, a skill makes that correction permanent. What Are OpenAI Codex Skills? (The Agent Macro Model) A Codex Skill is a task-specific package of instructions, optional scripts, reference documents, and assets that Codex can invoke autonomously when it determines a skill is relevant. Launched as an experimental feature in December 2025 and reaching wide availability in early 2026, Skills solve a specific problem: AI coding agents are powerful but stateless — every new session forgets your team’s conventions. Skills make those conventions persistent and composable. ...