Coasts
ActiveLocalhost service isolation and orchestration for git worktrees
About
A Coast (containerized host) is a local development runtime. Coasts let you run multiple isolated environments for the same project on one machine. As AI coding agents increasingly work in parallel across git worktrees, developers hit painful conflicts — clashing ports, duplicated databases, and fragile per-branch setup. Coasts solve this by giving each worktree its own fully isolated runtime, so multiple agents can build and test side by side without stepping on each other.
Founders · 2
Second time YC founder. Former YC Product Engineer (I made the YC investor CRM). I like weird front end things a lot. In a former life I started Cheqout (YC W21), a QR-based ordering platform that grew to over 250 restaurants and $30M GMV during the pandemic. Before that I was a developer on Airbnb's China Risk Team.
AmazonSenior Engineer and Cloud/AWS expert with experience leading teams building enterprise applications and infrastructure. In a past life, I was a chef at a James Beard award winning restaurant.
Launch
The AI first IDE for React development
JSX Tool is an in-browser IDE for React that lets developers click UI elements to prompt an LLM with precise DOM context and source components, enabling direct code edits and real-time UI updates. It combines an element-inspector workflow, a CSS editor, and LSP-powered editing (TypeScript, Tailwind, ESLint, Prettier) to align AI suggestions with exact UI context.
Formerly “JSX Tool”
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