For AI agents: a documentation index is available at the root level at /llms.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
Account: sign in with a passkey — Touch ID, Face ID, Windows Hello or your device PIN, saved in iCloud Keychain, Google Password Manager or your password manager. A passkey sign-in skips the 2FA code. Add one under User menu → Security → Passkeys; you get an email whenever a passkey is added or removed. See Passkeys.
Account: Continue with Apple on sign-in and sign-up, with Hide My Email support. Existing users link Apple from User menu → Security; accounts are never merged by email. See Sign in with Apple.
Security: Google sign-in now asks for the two-factor code on users with two-factor authentication turned on.
