Clear DNS instructions
Show each customer the exact record and the next step to take.
Custom domains for SaaS in a few steps
Give customers a clear, embedded setup UI while we handle DNS checks, SSL, and domain status.
- Clear setup
- Guide customers step by step
- We keep checking
- DNS, SSL, and domain status
- Use the account you already have
A clear, guided setup flow for your customers.
Custom domains, without the support burden.
Keep the difficult parts clear for customers and manageable for your team.
Checks that keep going
DNS and certificate checks continue in the background while customers wait.
One clear status
See when a domain is ready, pending, or needs attention without chasing support tickets.
Your infrastructure
Use your own Cloudflare account.
Connect the account you already manage. Cloudflare usage stays billed to that account while you pay the base plan here.
Learn how account connection worksAPI and webhooks
Get domain data where you need it.
Create applications and domains, then read DNS, SSL, and domain status through the API. Webhooks keep your product in sync when things change.
Read the API docsUseful data, not another dashboard
Bring setup progress and finished domains back into the workflows your team already uses.
For AI coding agents
Give your AI the right integration instructions.
Point your coding agent here before it adds Custom Domain Kit, so it follows the secure integration path your SaaS needs.
- 1
Keep secrets on the server
Store the application and webhook signing secrets in server-side configuration. Never send either secret to browser code, logs, or analytics.
- 2
Create a signed setup session
Check the current user's tenant permission, then return a fresh short-lived setup token with Cache-Control: no-store.
- 3
Embed the setup UI
Render custom-domainkit-setup on the tenant's domain settings page with only browser-safe values and a token refresh URL.
- 4
Verify webhooks and route by hostname
Verify raw webhook signatures, store the hostname-to-tenant mapping, and resolve traffic from X-CDK-Original-Host, then forwarded host, then Host.
Pricing
Simple, usage-based pricing.
Test up to 3 domains at $0/month; each expires after 3 days. Standard starts at $10/month for up to 50 domains, then scales with usage.
Testing Mode
3 test domains
$0/month · Each test domain expires after 3 days.
Standard
Starts at $10/month for up to 50 domains
$0.18 per additional domain
Estimated Custom Domain Kit price
$10.00/month
FAQ
Questions before you start
The important decisions stay clear before you ask a customer to connect a domain.
Do customers need to change DNS providers?
No. They add the DNS records shown in your product from the provider they already use.
How long does a domain take to go live?
It depends on DNS propagation and certificate validation. The setup UI keeps the current status and next action clear.
Can we use our own Cloudflare account?
Yes. Connect your account when you create your application and Cloudflare bills the related usage to that account.
How does pricing work?
Start in Testing Mode, then use Standard for production hosted domains. Domains in your own Cloudflare account are billed by Cloudflare separately.
Ready when you are
Test your first custom domain for free.
Start with three hosted domains in Testing Mode, then scale when the experience is ready for customers.
Start free