Blog
Notes on building and launching a SaaS with Next.js 16, Dodo Payments and Neon, from Nikhar Gupta, who builds Launchfast.
How to handle Dodo Payments webhooks in Next.js 16
Verify the signature, store payments in your own Postgres, survive retries and out-of-order events, and check access without calling Dodo.
How to rebrand a Next.js starter kit with an AI coding agent
What goes in an AGENTS.md file, and how the "Make it yours" task gets Claude Code, Codex or Cursor to rebrand a starter kit safely.
Neon database not connecting on Jio Wi-Fi? It's your DNS
Why getaddrinfo ENOTFOUND appears for Neon Postgres on some Indian home networks, how to confirm the cause in one command, and the fix.
The checklist I run before launching a SaaS
Payments, email, legal pages, SEO and monitoring: the things that are easy to forget on launch day, in the order I check them.