What's new in Codex

Codex now supports agent skills: reusable bundles of instructions (plus optional scripts and resources) that help Codex reliably complete specific tasks. Skills are available in both the Codex CLI and IDE extensions. You can invoke a skill explicitly by typing $skill-name (for example, $skill-installer or the experimental $create-plan skill after installing it), or let Codex select a skill automatically based on your prompt. Learn more in the skills documentation... Folder-based standard (agentskills.io). Following the open agent skills specification, a skill is a folder with a required SKILL.md and optional supporting files: text my-skill/ SKILL.md # Required: instructions + metadata scripts/ # Optional: executable code references/ # Optional: documentation assets/ # Optional: templates, resources. Install skills per-user or per-repo. You can install skills for just yourself in ~/.codex/skills, or for everyone on a project by checking them into.codex/skills in the repository. Codex also ships with a few built-in system skills to get started, including $skill-creator and $skill-installer. The $create-plan skill is experimental and needs to be installed (for example: $skill-installer install the create-plan skill from the.experimental folder). Codex ships with a small curated set of skills inspired by popular workflows at OpenAI. Install them with $skill-installer, and expect more over time.