Monorepo Overview

Structure, shared commands, and deployment map

Repository structure

apps/tools-web: React SPA
apps/tools-api: Fastify API
apps/ernesto-bot: Telegram bot + Mastra
apps/cms: Payload CMS
apps/marketing: Next.js marketing site
packages/ui: Shared component library
packages/shared: Shared utilities
packages/tools/*: Shared types, SDK, and config

Common commands

bun install
bun run dev
bun run build
bun run check
bun run test

App-specific dev commands

bun run dev:tools-web
bun run dev:tools-api
bun run dev:ernesto
bun run dev:cms
bun run dev:marketing
bun run dev:docs

Deployment map

tools-api: Railway
ernesto-bot: Railway
cms: Railway
marketing: Vercel
docs (this app): Vercel on internal.ern.app (planned)

Internal Docs Home

Internal engineering documentation for the Ern monorepo

Platform Rules

Engineering workflow, quality gates, and docs conventions

On this page

Repository structure Common commands App-specific dev commands Deployment map