Custom domains are a standard SaaS feature. Yet every hosting platform exposes a different API for them. OpenCoreDev has published Domain SDK, a TypeScript client that normalizes that work. Version 0.2.0 reached npm a day after the first release.
What is Domain SDK?
Domain SDK covers Vercel, Cloudflare for SaaS, Railway, Render, and Netlify. You add a hostname, show the exact DNS records, then track provider state until it is ready.
It does not register domains, host DNS, deploy apps, proxy traffic, or store tenant data. Your application keeps tenant authorization and state. The provider stays the source of truth.
The package is server-side only, so credentials never reach browser code. engines.node is >=20, and Bun is supported. It is ESM-only and ships one runtime dependency, tldts.
