Provides an interactive coding assistant in the 'RStudio' Viewer to explain R code, draft scripts, and propose changes to a selected editor target. Supports read-only chat, explicitly authorized edits, and user-requested submission of code to the native R console. Authenticates through 'ChatGPT' using browser-based OAuth 2.0 authorization with Proof Key for Code Exchange (PKCE) and stores credentials using the operating system credential store. Model requests require Internet access and an eligible 'ChatGPT' Plus or Pro account under the service's current terms < https://developers.openai.com/siwc/quickstart>. Neither an API key nor 'Codex CLI' is required.