google-auth-cookies-httponly-use-network-tab-for-extraction
Google’s NotebookLM auth cookies (__Secure-1PSID, __Secure-1PSIDTS, etc.) are marked httpOnly and cannot be accessed via document.cookie in the browser console. The only reliable extraction method is: DevTools → Network tab → refresh page → click first request → Request Headers → copy the full ‘cookie:’ header value. The Application tab shows cookie rows but copy-pasting individual values is error-prone.
Related
- notebooklm-mcp-cli-rejects-migrated-notebooklm-py-cookies
- notebooklm-py-cookies-rejected-by-upstream-client-fingerprin
- notebooklm-mcp-cli-auth-requires-fresh-capture-not-migration
- nlm-login-only-valid-auth-path-for-notebooklm-upstream
- notebooklm-mcp-cli-auth-format-two-files
- browser-httponly-cookies-not-accessible-via-document-cookie
- google-auth-cookies-httponly-not-accessible-via-document-coo
- google-auth-cookies-are-httponly-document-cookie-fails
- httponly-cookies-invisible-to-document-cookie
- google-httponly-cookies-require-network-tab-not-console