Codex Extensions

Codex CLI Extensions (cdx)

  

Lightweight, POSIX‑friendly helpers that enhance the Codex CLI with a single entrypoint, plugin routing, prompt management, and a quick smoke test.

Why cdx

As a worked through famliarising myself with the Codex CLI, I found that many of the quality of life features were missing / not yet released. I documented my findings and ended up creating this wrapper to accelerate and enhance my productivity.

► [**🎥 Watch the Video**](https://www.youtube.com/watch?v=3564u77Vyqk)

► [**🧰 Get the Builder Pack**](https://rebrand.ly/aa0f77)

• Fast: source one file and get a tidy cdx wrapper + cx alias.
• Extensible: drop scripts in cdx/plugins/ and call cdx .
• Practical: ship prompts and install them to ~/.codex/prompts.
• Safe: smoke test validates sourcing, plugins, and update checks.

Quick Start

• From this repo (local install):

  # Add cdx to your shell
  bash cdx/install.sh           # installs prompts and adds shell sourcing
  # Or for a temporary session
  source cdx/cdx.sh && cdx help

Usage

cdx help            # usage and discovered plugins
cdx plugins         # list subcommands from cdx/plugins/
cdx prompts list    # show repo and installed prompts
cdx prompts install # install prompts to ~/.codex/prompts
cdx profiles        # list profiles from ~/.codex/config.toml
cdx update --check-only  # check Codex CLI updates (uses npm)
cdx -- --profile NAME     # pass through to codex with defaults
cdx raw             # run codex without defaults

Default pass-through now targets `gpt-5-codex` with `model_reasoning_effort="high"`, `model_reasoning_summary="auto"`, and `model_reasoning_summary_format="experimental"` while enabling `--search` and `--dangerously-bypas