namecheap-supabase-auth-domain

Configure a custom subdomain for Supabase Auth via Namecheap API and SMTP.

Updated Aug 27, 2026
One-click install
npx skills add https://github.com/kellyclaudeai/cora --skill namecheap-supabase-auth-domain
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: namecheap-supabase-auth-domain
Source: https://github.com/kellyclaudeai/cora/tree/main/skills/namecheap-supabase-auth-domain
Command: npx skills add https://github.com/kellyclaudeai/cora --skill namecheap-supabase-auth-domain

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill automates the complex process of connecting a custom domain or subdomain to Supabase Auth, ensuring seamless user authentication and email delivery for your application.

Core Features & Use Cases

  • DNS Configuration: Automatically sets up necessary DNS records (A, CNAME, TXT) via the Namecheap API.
  • Supabase Auth Setup: Configures site_url, additional_redirect_urls, and custom SMTP settings within Supabase Auth.
  • SMTP Integration: Enables custom email sending for authentication (e.g., password resets) using providers like Postmark.
  • Use Case: You've just launched your new web app on app.yourdomain.com and need to ensure users can sign up and log in via Supabase Auth, with all confirmation emails coming from [email protected].

Quick Start

Use the namecheap-supabase-auth-domain skill to connect app.example.com to Supabase Auth with custom SMTP settings.

Frequently Asked Questions about namecheap-supabase-auth-domain

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I configure a custom domain for Supabase Auth emails using Namecheap DNS?

Configuring a custom domain for Supabase Auth requires setting up DNS records like A, CNAME, and TXT via Namecheap, then updating your Supabase Auth site URL and redirect URLs. This ensures authentication emails route correctly to your custom subdomain.

What DNS records do I need to set up for Supabase Auth on a Namecheap subdomain?

Setting up Supabase Auth on a Namecheap subdomain requires configuring A, CNAME, and TXT DNS records. Proper DNS management verifies domain ownership and routes authentication traffic correctly to your application.

Can I use a custom SMTP provider like Postmark with Supabase Auth?

Yes, you can integrate a custom SMTP provider like Postmark with Supabase Auth. Configuring custom SMTP settings allows authentication emails, such as password resets, to be sent reliably from your own custom domain address.

Do I need Namecheap API credentials to automate Supabase Auth domain configuration?

Automating the end-to-end DNS configuration for Supabase Auth requires Namecheap API access to manage records programmatically. You also need your Supabase project credentials and SMTP provider details to complete the full setup.

Why are Supabase Auth password reset emails not sending from my custom domain?

Supabase Auth emails fail to send from a custom domain if DNS records are misconfigured or custom SMTP settings are missing. Properly integrating your SMTP provider details and verifying DNS records ensures reliable email delivery.