How Do AI Keyboards Work?
Two paths share one keyboard: local typing, and a request you choose to send.
Path 1 — typing
The OS asks the current input method for key events. Candidates and ordinary characters can stay on the device. You do not need a model for “h-e-l-l-o.”
Path 2 — an AI action
You tap a control. The keyboard sends the draft, clipboard snippet, or opener category you chose, plus a style. A server runs inference and the text is inserted into the field. You still press send in the host app.
Mojikey specifically
Reply for, Super talk, and Hello are those actions. They need a signed-in account and a network. Inference goes through api.mojikey.app to DeepSeek. The Mojikey server is designed not to retain prompt text or generated response bodies. Details: privacy, security.
Questions this article answers
Does the keyboard read the whole WhatsApp database?
Mojikey does not. It sees the field, what you type or paste, and clipboard text you use with AI.
Why does Android warn me?
Any third-party keyboard can see text in the focused field. The OS always warns.
Can it work offline?
Typing can. Reply for, Super talk, and Hello need a network.
Who sees the AI prompt?
Mojikey’s service and the inference provider, under their policies, when you tap AI.
Is this the same as a keyboard with swipe?
No. Swipe is still local typing. AI actions are a separate path.