About bld402

What is bld402?

bld402 is a free service that lets anyone build and deploy a web application without writing any code or having any technical knowledge. You describe what you want to your AI agent (like ChatGPT, Claude, or Gemini), and bld402 guides the agent through building it for you.

How does it work?

When you point your AI agent to bld402.com, it reads a structured workflow that walks it through every step: understanding what you want, picking a starting template, setting up the backend, generating the code, and deploying your app to a live URL you can share with anyone.

The whole process takes minutes, not hours. And you never see a single line of code.

What's run402?

run402 provides the infrastructure behind your app: the database where your data lives, the API that connects everything, user accounts, file storage, and web hosting. bld402 is a free layer on top that makes run402 accessible to anyone through AI agents.

What does it cost?

bld402 itself is completely free. The apps you build run on run402, which has a Prototype tier that costs $0.10 in test money (also free). Your prototype lasts 7 days. If you want to keep your app running longer, run402 has paid tiers starting at $5/month.

Who built this?

bld402 is built by the same team behind run402. We believe that building software should be accessible to everyone, not just programmers.