Readwise Chat (RAG over Highlights)

Uses GPT-5.1 to answer questions with RAG over the user's full highlight library via WebSocket streaming.

Prerequisites

Chat requires session cookies (not API token). Check if configured:

grep SESSION_COOKIES ~/.readwise/env

If missing, run:

readwise-custom auth session

This launches Chrome, navigates to readwise.io/chat, and extracts httpOnly session cookies via CDP.