Domainee is a custom domains API that lets SaaS products offer white-label domains to their users in minutes instead of months - and even sell domains directly inside their app. Connecting a domain takes a single CNAME record, with SSL certificates, renewals, and DNS verification handled automatically, while the Buy-a-Domain API turns domain registration into one API call. The first 50 domains and 100 GB of bandwidth are free forever, with no credit card required.

Key Features

• One-CNAME setup with automatic SSL: End users add a single CNAME at their registrar, and Domainee issues and renews their certificate via Let's Encrypt on the first request — no DNS validation back-and-forth.

• Buy-a-Domain API: Let users search for and purchase a domain without ever leaving your app. One API call registers the domain with your end user as the legal owner, configures DNS, and connects it to your product — at wholesale price plus a flat $1 fee, with your own markup on top.

• Stripe-shaped REST API: POST /v1/domains creates a domain, returns the CNAME, and fires a domain.verified event over HMAC-signed webhooks the moment DNS lands. Bearer keys and idempotency keys included.

• Full domain lifecycle endpoints: DNS, nameserver, and renewal management via API, so your users never have to log into a registrar.

• Hosted MCP server for AI agents: Drop one config block into Claude, Cursor, or any AI agent and get 11 ready-made tools to list, create, and verify domains in plain English — no code change.

• Real free tier: 50 custom domains and 100 GB of bandwidth every month, free forever. The free quota stays free even after you scale past it.

Easy to setup, simple to automate

Approximated treats convenience and simplicity as a first class citizen, going the extra mile to make every step as easy as possible to integrate.

How it works

Approximated creates a dedicated cluster just for you, with edge servers in regions all over the world. These proxy traffic for custom domains to your app at any scale with incredibly low latency.

1. Create your dedicated cluster Approximated spins up a dedicated cluster, with nodes distributed globally. Traffic is automatically routed through the region nearest users for lightning fast response times. All you need to do is name it.

2. Call the API, or use the dashboard Connecting a custom domain takes one API call to Approximated. Or, use the dashboard to do the same thing any time. The dashboard will even show you what that would look like as an API call.

3. Point the domain(s) All that's needed is one DNS A record pointed at your cluster's dedicated IP address. Approximated will automatically create and manage SSL certificates for every domain.

Managed & maintained for you

Convenience isn't enough when it comes to handling custom domains in production - everything needs to be rock solid and reliable.

Approximated has constant monitoring, globally distributed servers, and automatically self-healing clusters so that it's ultra reliable.

Sophisticated monitoring at every level

Approximated is always monitoring the SSL status, DNS resolution, proxy hit status, and more for every domain. No external monitoring or infrastucture required - Approximated includes this for free.

Self-healing clusters with intelligent routing

Frequent health checks for every region of your cluster allow Approximated to find and heal any potentials issues before you or your users run into them. Traffic is automatically be routed to the nearest working region during any repairs to avoid any downtime.