Emoji Jev

September 17, 2026 · View on GitHub

Emoji autocomplete at the speed of typing. Live at emoji-jev.whop.site.

Type anything and a keyboard of up to 254 emojis lights up as you go. Every pause in typing is one call to Jev, which answers eight typed questions in parallel in about 100 ms of model time:

a Choice over 64, 128, or 254 emojis (switchable on the page), with a probability for every key
a Choice over eight primary emotions, shown as a distribution
three Scores: mood, urgency, and energy
three Booleans: sarcasm, joke, and whether the writer wants a reply

Jev bills input tokens only, so a keystroke costs about $0.0002.

Stack

TanStack Start on Cloudflare Workers, hosted by Whop (*.whop.site)
AI SDK experimental_evaluate with the @ai-sdk/typesafe-ai provider
No UI framework, no Tailwind: one small stylesheet and the system font

Run it yourself

npm install -g @whop/cli                                             # or: curl -fsSL https://whop.com/install.sh | sh
whop login
whop apps init --template app_D0f07WnZVO8v5N --app_type website   # clone the published source
cd emoji-jev
# one of the two, whichever you have access to:
whop apps secrets set --secret AI_GATEWAY_API_KEY=...              # Vercel dashboard -> AI Gateway -> API keys
whop apps secrets set --secret TYPESAFE_AI_API_KEY=...             # https://console.typesafe.ai/settings/keys
echo "AI_GATEWAY_API_KEY=..." > .dev.vars                           # same key for local dev (gitignored)
whop apps dev
whop apps deploy

Or from this repo: pnpm install, add .dev.vars, pnpm dev.

Files

src/emoji.ts the emoji vocabulary and the three questions
src/jev.ts the Jev call; uses TypeSafe directly if TYPESAFE_AI_API_KEY is set, else Vercel AI Gateway via AI_GATEWAY_API_KEY
src/routes/api/react.ts POST /api/react
src/routes/index.tsx the page