/next-forge

name: next-forge
description: next-forge expert guidance — production-grade Turborepo monorepo SaaS starter by Vercel. Use when working in a next-forge project, scaffolding with `npx next-forge init`, or editing @repo/* workspace packages.
summary: "next-forge monorepo SaaS starter (Turborepo, Clerk, Prisma/Neon, Stripe, Resend, shadcn/ui, Sentry, PostHog). See => skill:next-forge for full guide."
metadata:
  priority: 6
  docs:
    - "https://next-forge.com/docs"
    - "https://github.com/vercel/next-forge"
  pathPatterns:
    - 'pnpm-workspace.yaml'
    - 'apps/app/**'
    - 'apps/web/**'
    - 'apps/api/**'
    - 'apps/email/**'
    - 'apps/docs/**'
    - 'apps/studio/**'
    - 'apps/storybook/**'
    - 'packages/auth/**'
    - 'packages/database/**'
    - 'packages/design-system/**'
    - 'packages/payments/**'
    - 'packages/email/**'
    - 'packages/analytics/**'
    - 'packages/observability/**'
    - 'packages/security/**'
    - 'packages/ai/**'
    - 'packages/cms/**'
    - 'packages/collaboration/**'
    - 'packages/feature-flags/**'
    - 'packages/internationalization/**'
    - 'packages/notifications/**'
    - 'packages/rate-limit/**'
    - 'packages/seo/**'
    - 'packages/storage/**'
    - 'packages/webhooks/**'
    - 'packages/next-config/**'
    - 'packages/typescript-config/**'
    - '**/keys.ts'
    - '**/env.ts'
    - '**/proxy.ts'
    - 'biome.jsonc'
  bashPatterns:
    - '\bnext-forge\b'
    - '\bnpx\s+next-forge\b'
    - '\bpnpm\s+migrate\b'
    - '\bpnpm\s+bump-deps\b'
    - '\bpnpm\s+bump-ui\b'
    - '\bprisma\s+(generate|db\s+push|format|studio)\b'
    - '\bstripe\s+listen\b'
    - '\bnpx\s+shadcn@latest\s+add\b.*-c\s+packages/design-system\b'
  importPatterns:
    - '@repo/auth'
    - '@repo/database'
    - '@repo/design-system'
    - '@repo/payments'
    - '@repo/email'
    - '@repo/analytics'
    - '@repo/observability'
    - '@repo/security'
    - '@repo/ai'
    - '@repo/cms'
    - '@repo/collaboration'
    - '@repo/feature-flags'
    - '@repo/internationalization'
    - '@repo/notifications'
    - '@repo/rate-limit'
    - '@repo/seo'
    - '@repo/storage'
    - '@repo/webhooks'
    - '@repo/next-config'
    - '@t3-oss/env-nextjs'
    - '@rescale/nemo'
  promptSignals:
    phrases:
      - 'next-forge'
      - 'next forge'
      - '@repo/'
    allOf:
      -
        - 'monorepo'
        - 'saas'
        - 'starter'
      -
        - 'turborepo'
        - 'clerk'
        - 'stripe'
    anyOf:
      - 'saas starter'
      - 'production monorepo'
      - 'keys.ts'
      - 'pnpm-workspace'
    noneOf:
      - 'create-t3-app'
    minScore: 6
validate:
  -
    pattern: '"pipeline"\s*:'
    message: 'turbo.json "pipeline" was renamed to "tasks" in Turborepo v2 — update to "tasks"'
    severity: error
  -
    pattern: 'new Pool\('
    message: 'PrismaNeon expects a connection config object, not a Pool instance — use PrismaNeon({ connectionString: url })'
    severity: error
    skipIfFileContains: 'pg\.Pool'
  -
    pattern: 'prisma studio --schema'
    message: 'Prisma v7 removed --schema flag for studio — use --config instead'
    severity: error
  -
    pattern: 'middleware\.ts'
    message: 'next-forge uses proxy.ts (Next.js 16+), not middleware.ts — rename to proxy.ts'
    severity: warn
    skipIfFileContains: 'proxy\.ts'
retrieval:
  aliases:
    - saas starter
    - monorepo starter
    - next forge
    - turborepo template
  intents:
    - scaffold saas
    - set up next-forge
    - create monorepo project
    - use next-forge
  entities:
    - next-forge
    - '@repo/*'
    - Turborepo
    - monorepo
    - SaaS starter
chainTo:
  -
    pattern: 'export\s+(default\s+)?function\s+middleware'
    targetSkill: routing-middleware
    message: 'middleware.ts detected in next-forge project — loading Routing Middleware guidance for proxy.ts migration.'
  -
    pattern: '@clerk/|clerkMiddleware|ClerkProvider|getAuth\(\)|auth\(\)'
    targetSkill: auth
    message: 'Clerk auth patterns in next-forge — loading Auth guidance for middleware auth, sign-in/sign-up flows, and organization handling.'
    skipIfFileContains: '@auth0/|@descope/'

next-forge

next-forge is a production-grade Turborepo template for building Next.js SaaS applications. It provides a monorepo structure with multiple apps, shared packages, and integrations for authentication, database, payments, email, CMS, analytics, observability, security, and more.

Quick Start

Initialize a new project:

npx next-forge@latest init

The CLI prompts for a project name and package manager (bun, npm, yarn, or pnpm). After installation:

1. Set the `DATABASE_URL` in `packages/database/.env` pointing to a PostgreSQL database (Neon recommended). 2. Run database migrations: `bun run migrate` 3. Add any optional integration keys to the appropriate `.env.local` files. 4. Start development: `bun run dev`

All integrations besides the database are optional. Missing environment variables gracefully disable features rather than causing errors.

Architecture Overview

The monorepo contains apps and packages. Apps are deployable applications. Packages are shared libraries imported as `@repo/<package-name>`.

**Apps** (in `/apps/`):

| App | Port | Purpose | |-----|------|---------| | `app` | 3000 | Main authenticated SaaS application | | `web` | 3001 | Marketing website with CMS and SEO | | `api` | 3002 | Serverless API for webhooks, cron jobs | | `email` | 3003 | React Email preview server | | `docs` | 3004 | Documentation site (Mintlify) | | `storybook` | 6006 | Design system component workshop | | `studio` | 3005 | Prisma Studio for database editing |

**Core Packages**: `auth`, `database`, `payments`, `email`, `cms`, `design-system`, `analytics`, `observability`, `security`, `storage`, `seo`, `feature-flags`, `internationalization`, `webhooks`, `cron`, `notifications`, `collaboration`, `ai`, `rate-limit`, `next-config`, `typescript-config`.

For detailed structure, see `references/architectur