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Reply Composer
Text InputPick an intent — accept, decline, stall — and the Writer drafts the reply to a real email, streaming, with tone and length knobs.
Why On-Device?
Replies are drafted next to your inbox with zero upload: the incoming email is the Writer's sharedContext and never leaves the device.
Interactive Demo
Writer: Loading...
Incoming
Reply intent
Tone
Length
Draft Reply
Pick an intent above — the reply streams here, written entirely on-device.
Implementation Code
demo.js
Keep exploring
56 demos, all running on-device.
Story Time
The Writer invents a bedtime story from three ingredients, then the browser reads it aloud — highlighting each word as it speaks.
Writer Web Speech
Universal Inbox
A five-API pipeline: detect each message's language, translate it, triage it into folders, digest the inbox, and draft replies in the sender's language.
Language Detector Translator Semantic Embedder Summarizer Writer
Mystery Language
Guess which language the snippet is written in — then see if you beat the Language Detector's confidence-ranked answer.
Language Detector Translator