genesis

What it is

genesis is a Claude Code plugin that turns an empty folder into a working, tested, security-audited application. You describe the app you want in plain English, and it researches the problem, designs an architecture, chooses a stack, plans the work, and builds the project on your machine — running on its own until the work is done.

It’s greenfield by design: it creates new projects rather than changing existing codebases, and it runs entirely on your own Claude Code subscription.

How it works

A build moves through fixed phases. It starts with a non-skippable foundation — coding standards, an agent manual, a documentation skeleton, and a hardened sandbox — then researches the domain with sourced claims, designs and documents the architecture, derives a stack from that design, and produces a dependency-ordered task list with explicit acceptance criteria.

From there, building becomes a loop: implement one item, test it, security-audit it, review it, integrate it, and move to the next. A lead agent — the overlord, on the strongest available model — directs specialist agents for each job: a builder, a tester, a reviewer, and a security auditor, plus per-project workers. Nothing is marked done until its acceptance criteria are actually met.

Guardrails

Two protections stay on for the whole build: genesis writes only inside the project folder, and reading secret paths is blocked. Network access is open by default but can be narrowed to an allow-list for projects that handle money or personal data, and anything with real consequences — commits, deploys, creating accounts — waits for explicit approval. If a usage limit is reached mid-build, the run checkpoints and picks up exactly where it stopped.

Built in the open

genesis is open source under the MIT license and installs directly from Claude Code. It ships a registry of service integrations — Stripe, Supabase, Vercel, Clerk, Resend, and more — that a build wires in when the design calls for them. BrandCrafter, the brand-asset generator elsewhere in these projects, was built with genesis from an empty folder.