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Developer Releases Modular Monolith Boilerplate Designed for AI-Assisted Coding

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A software developer has published an open-source fullstack boilerplate called Modular Monolith Starter on GitHub, aimed at helping solo developers and small teams skip repetitive setup work. The project organizes code into distinct modules — such as auth, users, and notifications — each following a four-layer architecture covering presentation, application, domain, and infrastructure. It uses the Result pattern via the neverthrow library to handle errors as predictable values rather than exceptions, reducing the risk of unhandled crashes. The boilerplate is also optimized for AI coding tools like Cursor and GitHub Copilot by enforcing small files, Zod-defined API contracts, and built-in guardrails against cross-layer imports. The creator describes it as an opinionated but adaptable starting point, encouraging developers to modify it before building on top of it.

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