Using AICentOS with Codex

Install Codex

pnpm

pnpm install -g @openai/codex

npm

npm install -g @openai/codex

yarn

yarn global add @openai/codex

bunx

bunx --global @openai/codex

Configure Environment Variables

1. Visit https://www.aicentos.com/console/token to obtain your API Key

2. Create ~/.codex/config.toml with this configuration:

   model = "gpt-5.3-codex"
   model_provider = "aicentos"
   preferred_auth_method = "apikey"
   
   [model_providers.aicentos]
   name = "OpenAI using Chat Completions"
   base_url = "https://www.aicentos.com/v1"
   wire_api = "responses"
   query_params = {}
   stream_idle_timeout_ms = 300000

3. Create ~/.codex/auth.json, setting OPENAI_API_KEY to your AICentOS API Key:

   {
     "OPENAI_API_KEY": "your_api_key_here"
   }

Launch Directly

cd my-project
codex

Using Codex in VSCode

1. Install the Codex extension
2. Access settings and switch to JSON configuration mode
3. Add these settings:

{
  "chatgpt.apiBase": "https://www.aicentos.com/v1",
  "chatgpt.config": {
    "preferred_auth_method": "api_key",
    "model_provider": "aicentos"
  }
}

4. Click the Codex icon to begin using it