How do I connect Codex CLI to XuanShu API?

Add a custom provider in ~/.codex/config.toml and use the Responses API.

Steps

1. Back up the current Codex configuration.
2. Set base_url=https://www.xuanshuapi.com/v1, wire_api=responses, and OPENAI_API_KEY.
3. Choose a model visible in the console and test it; restore the backup to roll back.

Limits and exceptions

WebSocket and model capabilities are dynamic; do not write the key to auth.json, and not every Codex feature is guaranteed to match the official endpoint.