Create Your Own AI App Builder

The Totalum API turns the entire "prompt → production app" pipeline into a service you can build on. Because Totalum handles the hard part — actually building, hosting and deploying real full-stack apps — you only build the experience around it.

#What you can build

#Embed a multitenant AI builder in your SaaS

Drop an AI app builder into your existing product so your customers can generate and deploy apps without leaving your platform. Totalum runs each project on isolated infrastructure, so it's multitenant by design — you add your own user accounts and access control on top.

#Launch a builder startup from scratch

Ship a standalone AI web/app builder — your own Lovable / Bolt / v0 / Replit alternative — fully branded and priced by you. The heavy lifting (agent, sandbox, database, hosting, custom domains, GitHub sync) is provided by the Totalum API; you own the client and the go-to-market.

#Start from the open-source builder

We maintain a complete, self-hostable reference frontend — a working AI app builder UI on top of the Totalum VCaaS API. Clone it, set one environment variable, deploy anywhere Next.js runs, and you have a builder you fully own and can rebrand.

The only required configuration is a single environment variable:

VCAAS_API_KEY=tlm_sk_your_key

It ships with the full workspace out of the box: a Chat panel (prompt the agent), Preview, a Code browser (Monaco), a Diff viewer, a Database panel, Logs, Secrets, Versions, Domain and GitHub panels — plus a bundled copy of the full VCaaS API reference. Built with Next.js, React, Tailwind and shadcn/ui, it runs on Vercel, a container, or any VM.

#Architecture & security

All Totalum calls funnel through a single server-only module, so the API key never reaches the browser:

Browser → your Next.js API route (/api/vcaas/*) → Totalum VCaaS API

#Next steps