Configure Codex CLI

Codex CLI ↗ is OpenAI's command-line coding agent. With LAYSO AI, one API key connects Codex to platform models through a custom provider compatible with the Responses API.

Why use LAYSO AI?

• One key — Avoid maintaining separate credentials for different models.
• One model entry point — Switch between LAYSO AI platform models in the same Codex configuration.
• Responses compatibility — Uses the request protocol currently supported by Codex custom model providers.
• Clear billing — Every successful request has an itemized charge; failed tasks are not charged.

Configuration principle

Codex custom model providers use the responses wire API. Store the provider in the user-level ~/.codex/config.toml file and load the API key from an environment variable.

Quick start

01Install Codex CLIInstallation, version check, and first launch02Configure the model providerSet the API key, provider, and model ID

After configuration

Start Codex and run /status to verify the provider, model, and working directory. For the desktop client, continue to Codex desktop.