Answers.

Questions people ask when they put an app built with a coding agent online. Each page answers one, in full, with the steps. New to all of this? Start here first.

How to add sign-in to an app your coding agent builtThree ways to give an app built with Claude Code, Cursor, or Codex real user accounts, what each leaves you to get right, and how to test the result.
How to check an AI-built app for leaked API keysWhere keys end up when a coding agent writes the app, how to find them in your code and in the built site, and what to do first when one is out.

Also: a guide for each agent, and what carries over from Lovable, Bolt, Replit, and Vercel with Supabase.