Codex++
Codex++ is a third-party open-source manager for the Codex desktop app. It handles providers, models, context windows, and sessions through a GUI without modifying the official app.
Note
Codex++ is a community project, not an official XNova or OpenAI product. Download it from GitHub Releases. These steps are based on v1.10.
1. Install
- Install the official Codex desktop app first.
- Download Codex++ from Releases (
*-windows-x64-setup.exeor*-macos-universal.dmg). - Open Codex++ and confirm it found the official app.
2. Add XNova as a provider
Create a provider in API only mode (or Official login + API if you want to keep the official login):
| Field | Value |
|---|---|
| Name | XNova |
| Base URL | https://api.xnova.online/v1 |
| API Key | sk-your-xnova-key |
| Protocol | Responses |
Click Test model to confirm it works.
3. Models
List the models you want, for example gpt-6.1-sol, gpt-6-astra, gpt-6-sol. You can add a context-window suffix such as [200K] or [1M]; only use values the model actually supports.
4. Launch
Save, then click Launch in Codex++. Restart Codex from Codex++ after changing provider settings.
Troubleshooting
- 401: check the API key.
- Model not found: the key's group does not include that model.
- Slow: switch the base URL to
https://cf-api.xnova.online/v1.