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Built with v0?

Fixes for the problems v0 apps run into once real users arrive, each checked against v0’s own documentation.

Launchingv04 min readDeploy a v0 app to production: the publish flow and what to check firstSelect Publish in the v0 chat header: v0 creates or reuses a Vercel project, asks for visibility and a domain, and deploys to a stable production URL. Before you do, set every environment variable for Production in the Vercel project, because the v0 preview only reads Development, and check that GitHub branch rules will let the merge through.Launchingv04 min readExport v0 code: getting your project out of v0 and running it yourselfThe reliable way to export v0 code is to connect the project to GitHub under Project menu, Settings, GitHub. v0 creates a private repository and pushes the current code, which you can clone. Then pull the Development environment variables with the Vercel CLI, because the keys live in the Vercel project, not in the code.Fixingv05 min readv0 auth not working: why login breaks between preview and productionMost v0 auth failures are environment problems, not form problems. The v0 preview only reads Development variables, Supabase does not know your preview or production URLs, Vercel protection sits in front of your login, or the session refresh file never runs. Fix those four, then check the session on the server in every protected page and action.Fixingv04 min readv0 code messy: how to untangle a v0 project and keep it tidyv0 code gets messy when UI and data logic are generated in the same prompts, database queries are written inline without an ORM, and several chats change the same project on separate branches. Connect GitHub, move data access into one folder, split server and client components, add type checks and tests to CI, and save your structure as a v0 Instruction.Fixingv04 min readv0 mobile layout broken: fixing a v0 app that only works on desktopv0 builds with Tailwind and shadcn/ui, which are mobile-first, but layouts prompted and previewed on a desktop often only add classes for wide screens. Rewrite the base classes for a 375px screen, add larger breakpoints on top, contain overflow, and stop layout-critical parts from waiting on JavaScript to detect a phone.Launchingv04 min readv0 Stripe payments: from the sandbox to taking real moneyv0 adds Stripe through the Vercel Marketplace, which creates a Stripe sandbox and adds the API keys to your Vercel project. To take real payments you connect a live Stripe account, redeploy, and add a verified webhook so orders are only fulfilled when Stripe confirms the payment.

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