Why
I was the user. After work I was tired and didn’t know what to do, so every evening went phone, TV, sleep. It wasn’t that I didn’t want to do anything else; deciding what to do was simply too much effort.
I wanted it to come up with ideas for me: read a new book, exercise, walk a street in Shanghai I’d never walked, find a restaurant I’d never tried.
From big to small
At first I wanted it to do everything. I gave the idea to v0 and it generated an interface with everything in it:
“When I saw this design I paused for a second. It seemed like it could actually work? But should it really be all-in-one? Then it wouldn’t do any one thing well.”
Then I worked it out: “What you build at a hackathon doesn’t matter, having fun matters more. So build something fun, and skip the big concepts.”
What it does
Click to watch the demo.
- One tap and the AI suggests 3 to 5 things to do tonight, like “a casual painting session” or “an architecture walk through the city”;
- swipe left or right like Tinder to keep the ones you like;
- the ones you keep go into a “Tonight” list, and you tick them off when done.
Mobile first, and it works on desktop too. No sign-in, no image generation, no location: just the loop of “suggest → pick → feedback”. A round of ideas takes about three seconds.
Why it counts as an agent
The hackathon was about AI agents. I gave two reasons:
- It plans on its own: with very little context (the time now, what you liked before), it puts together a small plan for the evening;
- It remembers feedback: your swipes are fed back into the next prompt, so ideas repeat less over time.
There’s no separate back end; the agent logic lives in Next.js Server Actions, calling GPT-4.1 on GitHub Models through the Vercel AI SDK, with data in Supabase.
What didn’t make it
I wanted to connect Meituan to find nearby places I hadn’t eaten at, but Meituan has no API for individuals; I tried Amap instead and didn’t get that working either. Other ideas for later: filtering by location, remembering what you like, a morning check-in, and a group mode for picking with friends.