The stack

Built with

A developer's deep-dive into the OurAI stack. It's a Turborepo monorepo (AGPL-3.0 core, Apache-2.0 SDK) — everything below is open and swappable.

Frontend

Next.js15App Router, RSC, edge + node runtimes.

React19UI, Server Components, streaming.

Tailwind CSS3.4Utility-first styling, dark mode.

TypeScript5.6Strict, ESM-first across the monorepo.

Platform & data

SupabasePostgres + AuthPostgres, magic-link auth, RLS, Realtime.

VercelhostingEdge deploys, preview per PR.

PostHog1.xProduct analytics + funnels + session replay.

Zod3.xRuntime validation of events & inputs.

AI & agents

DeepSeekdefault modelBest cost/quality for agentic coding.

Model gateway@ourai/model-gatewaySwap DeepSeek / Kimi / Anthropic via one env var.

Monorepo & tooling

Turborepo2.xTopological builds + caching.

pnpm10Fast, strict workspace linker.

Changesets2.xVersioning + release notes.

ESLint + Prettier9 / 3Flat config lint + formatting.

Want the full architecture? Read the docs (ARCHITECTURE, ROADMAP, ADRs) or explore the source. Curious which model providers and services plug in? See integrations.