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How it works

  1. Radius launches its bundled Codex app-server with your normal Codex home and shell environment.
  2. Codex reads your login and config.toml.
  3. Radius requests the available models.
  4. Codex uses the configured model when available. Your Radius selection overrides it for the conversation.
If you need to sign in, select Sign in to Codex. Radius uses the same Codex home as the regular CLI, so both can reuse the login.

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Configuration cases

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Cloud providers

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Google Cloud

Codex doesn’t include a dedicated Google Cloud provider. Use Google Cloud only through a custom model provider whose endpoint supports the APIs that Codex requires. Configure the endpoint and credential environment variable in your user-level config.toml, then select CLI in Radius.

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Azure OpenAI

Use CLI for Azure. Define the Azure provider, endpoint, API version, credential environment variable, and deployment in your user-level config.toml. Radius displays the models that Codex reports for that configuration.

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Amazon Bedrock

Codex includes a built-in amazon-bedrock model provider. Use CLI so Codex can resolve a Bedrock API key or the standard AWS credential chain from your native configuration and environment.