Configuration

Settings live in three places:

Env files in apps/web. They hold values that change per environment.
Config files in apps/web/config. They read the env values, validate them with Zod and export typed objects. An invalid value stops the app at startup or at build time.
The public.config row in the database. It holds the billing provider and three on/off switches the database itself checks.

Env files

File	Committed	Holds
`apps/web/.env`	Yes	Public values shared by every environment: site name, auth methods, feature flags
`apps/web/.env.development`	Yes	Local Supabase URL and keys, local mail server
`apps/web/.env.production`	Yes	Public production values only
`apps/web/.env.test`	Yes	Values for the CI and end-to-end test build
`apps/web/.env.local`	No (ignored by Git)	Your secrets on your machine

Put secrets (Supabase secret key, Stripe keys, mail passwords) in .env.local locally and in your host's environment settings in production. Never in a committed file.

NEXT_PUBLIC_* values are read when the server starts, so restart pnpm dev after you change one.

Site

Variable	Notes
`NEXT_PUBLIC_SITE_URL`	Must be `https://` in a production build (`config/app.config.ts` fails the build otherwise)
`NEXT_PUBLIC_PRODUCT_NAME`, `NEXT_PUBLIC_SITE_TITLE`, `NEXT_PUBLIC_SITE_DESCRIPTION`	Name and default metadata
`NEXT_PUBLIC_DEFAULT_THEME_MODE`	`light`, `dark` or `system`
`NEXT_PUBLIC_THEME_COLOR`, `NEXT_PUBLIC_THEME_COLOR_DARK`	Browser theme colours. They must differ.

Supabase

Variable	Notes
`NEXT_PUBLIC_SUPABASE_URL`	Project URL
`NEXT_PUBLIC_SUPABASE_PUBLIC_KEY`	Public (anon) key
`SUPABASE_SECRET_KEY`	Secret key. Read only in `server-only` modules; it bypasses row-level security
`SUPABASE_DB_WEBHOOK_SECRET`	Shared secret the database webhook sends to `/api/db/webhook`

Feature flags

config/feature-flags.config.ts reads these. The code default applies when a variable is not set.

Variable	Code default	In `.env`
`NEXT_PUBLIC_ENABLE_TEAM_ACCOUNTS`	`true`	`true`
`NEXT_PUBLIC_ENABLE_TEAM_ACCOUNTS_CREATION`	`true`	`true`
`NEXT_PUBLIC_ENABLE_TEAM_ACCOUNTS_ONLY`	`false`	`false`
`NEXT_PUBLIC_ENABLE_TEAM_ACCOUNTS_DELETION`	`false`	`true`
`NEXT_PUBLIC_ENABLE_PERSONAL_ACCOUNT_DELETION`	`false`	`true`
`NEXT_PUBLIC_ENABLE_TEAM_ACCOUNTS_BILLING`	`false`	`true`
`NEXT_PUBLIC_ENABLE_PERSONAL_ACCOUNT_BILLING`	`false`	`true`
`NEXT_PUBLIC_ENABLE_NOTIFICATIONS`	`true`	not set
`NEXT_PUBLIC_REALTIME_NOTIFICATIONS`	`false`	not set
`NEXT_PUBLIC_ENABLE_THEME_TOGGLE`	`true`	`true`
`NEXT_PUBLIC_ENABLE_VERSION_UPDATER`	`false`	not set
`NEXT_PUBLIC_LANGUAGE_PRIORITY`	`application`	`application`

With NEXT_PUBLIC_ENABLE_TEAM_ACCOUNTS_ONLY=true, the personal workspace is skipped: users land in their last team, or on the create-team page if they have none.

Other areas

Each of these has its own page:

Sign-in methods, captcha and password rules: Authentication.
NEXT_PUBLIC_BILLING_PROVIDER and the Stripe and Lemon Squeezy keys: Stripe and Lemon Squeezy.
MAILER_PROVIDER, EMAIL_*, RESEND_API_KEY, CONTACT_EMAIL: Email.
CMS_CLIENT and the content path: Blog, docs and changelog.
NEXT_PUBLIC_DEMO_*: Live demo.

A few more that are off by default:

Variable	Effect
`NEXT_PUBLIC_MONITORING_PROVIDER`	`sentry` turns on Sentry (with `NEXT_PUBLIC_SENTRY_DSN`). Empty logs errors to the console.
`ENABLE_STRICT_CSP`	`true` turns on the strict Content Security Policy in `apps/web/proxy.ts`. Default `false`.
`ENABLE_REACT_COMPILER`	`true` turns on the React Compiler in `next.config.mjs`

The NEXT_PUBLIC_KIT_* variables and config/kit-offer.config.ts drive the kit's own sales page (prices, payment links, demo link). Replace them with your own offer, or remove that page, when you build your product.

Config files

File	What it sets
`app.config.ts`	Name, title, description, URL, theme, locale
`auth.config.ts`	Sign-in methods, captcha key, terms checkbox, identity linking
`feature-flags.config.ts`	The flags above
`paths.config.ts`	Routes for sign-in, the app, settings, billing and invitations
`billing.config.ts`	Your products and plans. It re-exports `billing.sample.config.ts` until you replace it
`personal-account-navigation.config.tsx`, `team-account-navigation.config.tsx`	Sidebar links
`demo.config.ts`	Live demo mode
`kit-offer.config.ts`	The kit's own sales page

The database config row

apps/web/supabase/schemas/02-config.sql creates public.config with enable_team_accounts, enable_account_billing, enable_team_account_billing (all true) and billing_provider (stripe). If you switch to Lemon Squeezy, update billing_provider here as well as NEXT_PUBLIC_BILLING_PROVIDER.

Where settings live: the env files, the typed config files in apps/web/config, and the database config row.