Features
What’s in OMD.
Two install profiles. 22 first-party mods. Every one turns on or off in /mods.
Build your own
OMD Core
Codex plus the mod system. Add only what you choose.
- /mods manager and updates
- Installs from npm, Git or a folder
- Tools to write your own mods
Ready to use
OMD+
Core plus the first-party collection.
- 22 mods: 11 on, 11 off
- 3 optional Codex plugins
- Turn any of them off in /mods
On by default
OMD+ turns these on. OMD Core includes the three marked Core.
| Mod | What it does |
|---|---|
| Launch bannerCore | The OMD mark in the session header |
| Mod managerCore | The /mods screen: browse, install and turn mods on or off |
| Update controlsCore | Update notices and the /update screen |
| Inspector | /inspect: the session’s mode, profile and active mods |
| Model picker | A compact /model and reasoning-effort picker |
| Tool lines | One short line per tool call; open it for the full output |
| Plan-mode removal | Removes /plan and plan mode |
| Plan panel | Pins Codex’s current plan above the prompt |
| Status line | A configurable status line; /statusline edits it |
| Idle compact | Compacts a large idle conversation before the prompt cache expires |
| Auto-continue | Answers a prompt nobody answers within two minutes, so the turn continues |
Off until you want them
Installed with OMD+. Turn one on in /mods.
| Mod | What it does | Needs |
|---|---|---|
| Response preview | Previews HTML and files, draws Mermaid diagrams | — |
| File ranking | Ranks @ file mentions by fuzzy match and how often you use them | — |
| Privacy | Hides secrets and chosen personal data from what’s sent to the model | — |
| Usage | Context, cache, cost and quota at a glance (Alt+a) | — |
| Continue | /continue resumes interrupted work in the current session | — |
| LSP sync | Tells the agent about the errors each edit introducesNeeds: A language server on your PATH | A language server on your PATH |
| Code intelligence | Hover, symbols, code actions and formatting in /lspNeeds: LSP sync turned on | LSP sync turned on |
| Claude | Claude models in /model, using your Claude plan or API creditsNeeds: Claude CLI 2.1.302 on your PATH | Claude CLI 2.1.302 on your PATH |
| Account profiles | Switch between ChatGPT accounts, API keys and other providersNeeds: A profile you add | A profile you add |
| Workflow | Checkpoints and “done means checked” for long tasksNeeds: A contract you pick | A contract you pick |
| Advisor | A second model reviews plans and claimed completionNeeds: A second model route | A second model route |
Plugins
OMD+ also stages 3 Codex plugins. They do nothing until you run omd-package plugins once, then add one with codex plugin add.
| Plugin | What it does |
|---|---|
| Anchored edit | Checks exact text anchors and file hashes before a multi-file edit |
| Artifact reading | Reads web pages, GitHub, PDFs and notebooks with sources |
| Code execution | Persistent JavaScript, Python and Bun cells |
What’s next
- Wave 1: mini mode, Cursor, source knowledge, programmable context, an account switcher with usage meters, and OMD under the official Codex app
- Wave 2: Git panels, an editor, panes, notes, research, MCP tools, themes and broader workflows
- Linux support
Release status
Labeled beta, for Codex 0.163.x. Beta means not every planned feature is in yet, not that it’s unstable. The mod API is experimental.