Next.js 15 + Prisma + Polar SaaS

Autonomous B2B SaaS starter with 122 PR rules, Polar billing, and AEO optimization.

★ 342 GitHub stars

npx brevio init --blueprint=nextjs-b2b-saas

Next.js 15 (App Router)TypeScriptPrisma ORMTailwind CSSPolar.sh

Initial Roadmap & Feature Tasks (3)

TASK-001 · Setup Auth & Tenant Context MiddlewareP0 · GUARDRAIL

Acceptance Criteria: Multi-tenant tenantId header injected on all protected /api routes.

TASK-002 · Polar Subscription Webhook HandlerP0 · FEATURE

Acceptance Criteria: Idempotent webhook endpoint granting plan entitlements with signature check.

TASK-003 · Generate /llms.txt and /skill.mdP1 · FEATURE

Acceptance Criteria: Machine-readable documentation index generated at build time.

CONSTITUTION.md

Immutable Floors

# Engineering Constitution — Next.js B2B SaaS

1. Zero Secrets in commits or client-visible code (enforced by push secret scan).
2. All pull requests pass the 122 PR-checkable AST rules (R1–R19).
3. Database mutations must use Prisma transactions with strict multi-tenant filtering.
4. Core landing pages must maintain /llms.txt and Scorecard AEO score >= 85.
5. Mobile viewport tap targets >= 44px, LCP <= 1.8s.

CLAUDE.md

Coding Guidance

# Assistant Guidelines — Next.js B2B SaaS

- Enforce TypeScript strict mode without 'any' assertions.
- Use Next.js Server Components by default; reserve 'use client' for interactive leaf nodes.
- Validate API input payloads using Zod schemas.
- Write hermetic unit tests with Vitest before creating PRs.

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