Fixed Template

Next.js SaaS template for flat monthly or yearly subscriptions with boolean feature flags. Two plans (Pro and Max) with checkout, customer portal, and per-plan feature access checks.

No metered or seat-based billing — the starting point when your product sells plans, not usage.

Stack: Next.js 16, Better Auth, Drizzle ORM, PostgreSQL, Commet SDK

Quick Start#

commet create my-app -t fixed
cd my-app
pnpm install
pnpm dev

What's Included#

• Two plans with monthly and yearly prices

• Five boolean features with per-plan access control

• Checkout flow with plan selection

• Customer billing portal (manage subscription, invoices)

• Auth with automatic customer creation on signup

• Feature flag checks on the dashboard

• Pricing page with plan comparison

Key Files#

• lib/auth/auth.ts — Better Auth + Commet plugin (portal, subscriptions, features)

• lib/payments/commet.ts — Checkout session creation and subscription checks

• app/pricing/page.tsx — Dynamic pricing page from Commet plans API

• app/(dashboard)/dashboard/page.tsx — Feature access dashboard

• app/api/commet/portal/route.ts — Customer portal redirect

Learn More#

• Consumption Models

• Configure Features

• Customer Portal

Run commet create my-app -t fixed to start from this template, or browse the source on GitHub.