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Haavn' Fun · Past
1115 April 2026

Building on the go

Capturing ideas the moment they strike. From a voice note on the Overground to a live app in one afternoon.

From voice note to live app

The hardest part of building on the go isn't the building — it's knowing what to build. This session ran that full loop in a single afternoon: Sebastian captured an idea as a voice note on the Overground that morning, and by the evening workshop it was a working language game deployed to the web. The three exercises walk attendees through the same path: find a spark worth making, turn it into a plan your AI can execute, then ship a prototype that actually runs. Homework pushes it from local prototype to live URL via GitHub + Vercel.

Key takeaways

Spark to prototype in a single commute. Eddie read a news story about a child who couldn't reach anti-venom in time. Over the weekend he built a map that shows Brazilians their nearest hospital with the right supply. Sebastian had an idea on the morning train; by the time he reached the office, LinguaGuessr (a language-identification game) had a working first draft running on his home computer. Both started from a voice note or a prompt on their phone.

Deploy via CLI, not dashboard. Eddie had never used GitHub. He installed the Vercel skill, and Claude Code handled the repo, the domain purchase, and the deployment. He now pushes changes to main; the site updates in under a minute. The entire pipeline runs from the command line.

/ce:plan researches before it builds. Compound Engineering's plan step spins up multiple simultaneous sub-agents that search online, pull framework docs and API references, and study current best practices before any code is written. The result is a plan grounded in live research, pulled from online sources, documentation, and best-practice write-ups, not just what the model already knew.

Tools covered

  • Claude — Anthropic's AI assistant. Desktop and mobile apps used for the idea-finding exercise.
  • Claude Code — terminal and desktop companion used for planning, building, and shipping.
  • Compound Engineering plugin — Every's plan → work → assess → compound loop for Claude Code.
  • GitHub CLI (gh) — push your project to a private repo from the terminal.
  • Vercel CLI (vercel) — deploy the prototype to a live URL.
  • Amphetamine — keeps your laptop awake for remote access after you leave the house.

Referenced

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