How to Build a Marketplace with Vibe Coding

1. 1

   Step 1 · Brief

   Write a one-page brief before you prompt

   AI builds what you describe, so describe the business, not just the look. Write down who sells, who buys, what a listing contains, how buyers pay, how sellers get paid, and how items reach the buyer. A clear brief stops the AI from inventing flows you will later have to undo, and it doubles as the first prompt.

   Tradly: Tradly Vibe Coding starts from a plain-English description of your marketplace or app idea and the features you need.

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2. 2

   Step 2 · Back end

   Start from a real marketplace back end, not an empty database

   The riskiest parts of a marketplace are the invisible ones: seller accounts, split payments, payouts, refunds and order status. Asking AI to write these from scratch produces code that looks right and fails in edge cases, often with money involved. Set up the business side first, with categories, commission and seller rules, on a platform that already handles it.

   Tradly: Tradly gives you the marketplace back end out of the box: seller sign-up and dashboards, split payments, commission and automatic payouts.

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3. 3

   Step 3 · Prompt

   Describe the storefront and let AI build it

   Now prompt for the parts customers see: homepage, category pages, listing pages and the seller profile. Work one page at a time and be specific about layout, tone and the information each page shows. Ask for small changes in follow-up prompts rather than rewriting everything, so you keep the parts that already work.

   Tradly: The Tradly Assistant writes and edits the code from your prompts, and you can switch to the code editor whenever you want to change something by hand.

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4. 4

   Step 4 · Data

   Connect the pages to live listings

   A vibe-coded prototype usually shows hard-coded sample products. Before launch, every card, list and search result has to read real listings from your catalogue, so new items appear the moment a seller publishes them. Check the empty states too: what a category shows with no listings, and what search shows with no results.

   Tradly: Tradly Vibe Coding connects to your Tradly store, so pages show live listings and collections through the Tradly SDK and headless API.

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5. 5

   Step 5 · Checkout

   Leave payments, payouts and orders to the platform

   Keep checkout, payment processing and seller payouts out of generated code. Point the buy button at the platform's checkout and let it create the order, take the payment and split it between the seller and you. This is where vibe-coded apps most often break, and where a bug costs real money and trust.

   Tradly: Tradly handles checkout, escrow-held payments, your commission and seller payouts, plus delivery options and order tracking.

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6. 6

   Step 6 · AI

   Run the marketplace from your AI assistant

   Once the marketplace is live, the same AI-first approach works for running it. Instead of switching between admin screens, ask your assistant which sellers are waiting for approval, which orders haven't shipped, or how this week's sales compare with last week, and act on the answers in the same conversation.

   Tradly: Tradly MCP (mcp.tradly.app) connects your marketplace to Claude, ChatGPT, voice agents and custom agents, so they can check listings, orders and analytics for you.

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7. 7

   Step 7 · Launch

   Test the full journey, then publish on your domain

   Before you announce anything, run one complete transaction yourself: a seller signs up and lists, a buyer finds the item, pays, receives it, and the seller gets paid. Then publish to your own domain and keep your code in a repository you control, so you can keep iterating with AI after launch.

   Tradly: Tradly Vibe Coding publishes to a live URL or your own domain and syncs your code with your GitHub repository.

Plus 50+ integrations, full REST API & JS SDK, and the Marketplace Kit for ready-made multi-vendor flows.