Codex API key - Radius

Item	Behavior
Use for	A first-party OpenAI API key
Configuration	A Radius-owned isolated `CODEX_HOME`
Credentials	`OPENAI_API_KEY` for the default OpenAI provider
Isolation	Your normal Codex login and configuration do not take over

How it works

Select API Key and save your OpenAI key.
Radius stores the key in encrypted credential storage.
Radius removes ambient OpenAI and Azure credentials from the launched process, then supplies the saved key.
Codex discovers and runs models with the isolated configuration.

Radius does not send the key to the page renderer or write it into config.toml.

Advanced Azure setup

You can edit the isolated advanced config.toml to define Azure, then save the Azure key in Radius. Radius supplies the key through the env_key named by that configuration. For most Azure setups, use Codex CLI instead.

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