OpenAI Codex HTTP Adapter (use your ChatGPT subscription)

[viespejo]

Hello again!

I've just finished another adapter for CodeCompanion, this time for Codex.

The big win here is that it lets you use your ChatGPT Plus/Pro subscription directly in Neovim. No need for an OpenAI API key or paying for tokens separately—it uses the official OAuth2 + PKCE flow, just like the official Codex CLI.

A few highlights:

• Full support for GPT-5.x models (including reasoning effort, summaries, etc.).
• Secure, automatic token management (Refresh/Access).
• Multi-account support via profiles.
• Fully compatible with CodeCompanion tools and agents.

Repository: viespejo/cc-adapter-codex.nvim

If you're looking to save on API costs and already have a Plus sub, give it a spin. I'd love to hear your feedback or if you run into any issues!

@olimorris, this one should definitely help everyone save a few bucks on their API bills!