I built Kajota Pulse and wrote this article as my entry for the **AWS × Vercel "H0: Hack the Zero Stack"* hackathon (#H0Hackathon). Live app: kajota-pulse.vercel.app · Code: github.com/KaJota-inc/kajota-pulse*
The problem nobody builds for
Across African micro-commerce, "co-sellers" buy stock from wholesalers and resell to their network for a markup. There's a whole industry of tools for writing the listing. There's almost nothing for the question that actually decides whether a co-seller makes money: what should I stock this week?
So we built Kajota Pulse — a Bloomberg-terminal-style dashboard that watches the marketplace and, in one click, tells a seller what to buy and why. It's the "monitor" pillar of a three-app stack: Coach drafts the listing, Pulse says what to stock, Mesh settles the deal on-chain.
The hackathon constraint was the fun part: build it on the zero stack — Vercel for compute, an AWS database for state, no servers to manage. Here's what that actually took.
