What is quantumbyte?

QuantumByte is an open-source app builder that generates a working application from a description of what you want, then keeps checking that the app still matches your original requirements as an AI agent continues building it. The project describes a common problem it calls false convergence, where a generated app looks finished because the interface renders and the main path through it works, while important requirements are actually missing or quietly broken underneath. To address this, QuantumByte separates two roles. A builder agent has a conversation with the user, writes a product overview, and generates the actual application code inside its own project repository. A second, separate verification system then checks the app against explicit business requirements after every change the builder makes, without seeing the builder's conversation and without being able to edit the code itself. Each requirement gets a structured pass, fail, or inconclusive verdict along with supporting evidence, and only files relevant to a change are re-checked, so the process does not have to recheck everything every time. What currently ships includes conversational intent capture, agent-generated applications, live previews with health checks, and this continuous requirements checker with per-requirement verdicts shown in the interface as background checks run. The system is made of a web app built with Next.js for the interface, an orchestrator written in Python that assigns work and coordinates workers, and a worker service that runs the actual building and checking using the Claude Agent SDK, backed by PostgreSQL, Redis, and an S3-compatible storage service called minio. Running it locally requires Docker, Node.js, Python, and an Anthropic API key for the current agent implementation. The project is public alpha software, actively built in public, and is looking for early contributors. It is licensed under the Apache License 2.0.