Provider adapters
Which integrations swap via config and which require a fork or second SKU.
Provider adapters
See the full port map in .nova/boilerplate/ADAPTER_PORTS.md in your repository clone.
Summary
| Area | First-class swaps |
|---|---|
| Billing | Stripe, Paddle, Lemon Squeezy, Polar via BILLING_PROVIDER |
| Email | SMTP, Resend, SendGrid via EMAIL_PROVIDER |
| Storage | S3-compatible providers via STORAGE_PROVIDER |
| AI | OpenAI, Anthropic, Gemini, Groq via AI_PROVIDER |
Firebase Auth / Firestore is not a drop-in toggle: different security and tenancy model—treat as a separate template or branch if you need it.