# Domain SDK

> TypeScript SDK for adding and managing custom customer domains across platforms

Domain SDK provides a unified TypeScript client to programmatically add, verify, monitor, and remove custom domains on hosting platforms like Vercel, Cloudflare, and Netlify. It normalizes DNS record generation, verification states, and TLS certificate tracking across different backends. This saves multi-tenant SaaS developers from writing bespoke domain-handling infrastructure.

Website: https://github.com/opencoredev/domain-sdk

## What it is for

- Add custom domain management to a multi-tenant SaaS platform
- Generate accurate DNS records and instructions for customer onboarding
- Track ownership verification and SSL certificate issuance asynchronously
- Provision and manage tenant-specific subdomains under a root domain

## Features

- Adapters for Vercel, Cloudflare for SaaS, Railway, Render, Netlify, and bunny.net
- DNS registrar adapters for Porkbun, Namecheap, and Spaceship
- Normalized domain lifecycle tracking for routing, ownership, and TLS readiness
- Sequential polling with retry logic, timeouts, and provider backoff
- Tenant subdomain scoping with reserved label filtering
- Isolated in-memory testing adapter that runs without hitting live APIs

## Pricing

Open source. Free, MIT licensed

## Details

- Type: GitHub repo
- Category: [Development](https://xiry.app/topics/development.md)
- Topic: [Developer Tools](https://xiry.app/topics/development/developer-tools.md)
- Open source: yes
- Platforms: Code library
- For: TypeScript and SaaS developers building multi-tenant web applications
- Alternative to: Platforms on Vercel, Cloudflare for SaaS Custom Hostnames API
- Tags: domains, dns, saas, multitenancy, typescript, ssl, vercel

## Why it was saved

- [@leodev, 13 July 2026](https://x.com/leodev/status/2076637877757423801): Removes a whole class of bespoke infrastructure work (DNS config, verification, TLS issuance tracking) when building multi-tenant SaaS with custom domains.

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Updated 10 October 2026. Page: https://xiry.app/resources/domain-sdk

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