API reference — Scalar
A full Scalar API reference at http://localhost:3001/docs, served in-process by Hono (non-production only). Every endpoint, its.input() / .output() schema, and a built-in “Test Request” client — generated from your oRPC contract, so it’s always current. The raw OpenAPI 3.1 document is at /spec.json.
Database browser — Drizzle Studio
Drizzle Studio at https://local.drizzle.studio, opened withpnpm dashboard. Browse tables, rows and relations, edit data, and run SQL against your local Postgres — backed by the same schema your migrations build.
Email preview — React Email
A live React Email preview at http://localhost:4000, provided by the Mailer plugin. Every template re-renders as you edit, so you can design transactional emails without sending a single message.
Where each comes from
| Dashboard | URL | Start it | Needs |
|---|---|---|---|
| Scalar API reference | localhost:3001/docs | pnpm start | apps/api (full-stack) |
| Drizzle Studio | local.drizzle.studio | pnpm dashboard | PostgreSQL |
| React Email preview | localhost:4000 | pnpm start | Mailer plugin |
pnpm start brings up the API (with Scalar) and, when the Mailer plugin is installed, the email preview. pnpm dashboard opens Drizzle Studio on demand.
These dashboards are dev-only — Scalar is disabled in production, and Studio/preview are local tools. A web-only project has none of them (it ships just the TanStack Start SPA).