Codex CLI Setup Guide

1. Open the configuration directory

The Codex directory is .codex in your home directory. Run codex once if it has not been created.

2. Edit config.toml

model_provider = "yuan_api"
model = "your-model-id"

[model_providers.yuan_api]
name = "Yuan API"
base_url = "https://api.apixhm.com/v1"
wire_api = "responses"
requires_openai_auth = true

3. Edit auth.json

{
  "OPENAI_API_KEY": "your-api-key"
}

Restart the terminal and run codex. Do not duplicate /v1.