Currently, Keychat users can [manually] invoke the Keychat Wallet within the chat to send BTC in chat rooms, and they can also [automatically] use the Keychat Wallet to pay for message stamps. This payment process for stamps is automated and programmatic, requiring no manual action from the user.
In the browser, Keychat users can [manually] use the Keychat Wallet to pay lightning invoices for Mini Apps, but they are not yet able to [automatically] perform micropayments with the Keychat Wallet.