Using custom domains with sandboxes

• Registering mycompany.com lets you use any *.mycompany.com subdomain
• Registering preview.mycompany.com lets you use any *.preview.mycompany.com subdomain

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Create a preview URL

import { SandboxInstance } from "@blaxel/core";

const sandbox = await SandboxInstance.get("my-sandbox");
const preview = await sandbox.previews.create({
  metadata: { name: "preview-custom-domain" },
  spec: {
    port: 443,
    public: false,
    customDomain: "your.custom.domain.dev",
  },
});

• Give the preview a specific name
• Retrieve the preview later with the SDK
• Access the custom domain URL from the preview specification

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Requirements and limitations

• Custom domains require Tier 3 or higher access
• Each custom domain is assigned to one region and cannot be used across regions
• You must configure the required DNS records and verify the domain in the Blaxel Console
• Custom domains currently work only for sandbox previews