Deploy the provided Code.gs as a Web App (execute as you, access: anyone with the link) and paste the /exec URL here. This lets the app fetch and read your Google Docs aloud.

Only needed when this page runs outside Claude.ai (e.g. on Cloudflare Pages). Stored in this browser's localStorage only — anyone with access to this browser can read it, so use a low-limit key. Leave blank inside Claude.ai.