Each message spends $0.05 of your ai credit. If your balance is too low, sending is refused.
Launch an agent
Sending a message runs your own Hermes profile inside a Modal sandbox -- created fresh the first time, reused after that.
Sign in to use the sandbox.
Sign inDesktop app
Unsigned launchers that just open this same page (macOS Gatekeeper / Windows SmartScreen will warn).
- macOS (.dmg)
- Windows (.exe)
- Linux (.sh) —
curl -fsSL https://app.kotoba.cloud/download/kotoba-install.sh | sh