What is agentic-saas-blueprint?

Agentic SaaS Blueprint is a minimal starter kit for building a production SaaS product with the help of Claude, the AI coding assistant. Instead of a full application, it gives you a CLAUDE.md file and a starter folder that you copy into a new project, distilled from what the author learned building a real product over three months. The idea is that you clone the blueprint, copy the CLAUDE.md file and the starter folder into your own new project, then open Claude Code and describe what you want to build. The CLAUDE.md file gives Claude the context and rules it needs, so you do not need to paste a long explanation every time you start a session. Nine rules are baked into the CLAUDE.md file. These cover using theme tokens instead of hardcoded colors so light and dark mode work automatically, making sure every component works in both modes from day one, designing mobile first and testing at common screen widths, using test driven development with a failing test written first, scrubbing personal data on the server before saving it, and having external services fail gracefully when their API keys are missing. The starter folder includes ready made pieces such as theme variables and a light mode safety layer, a Tailwind configuration that maps to those variables, a React theme provider and toggle component, a stat tile component, an email client wrapper that quietly does nothing if no API key is set, and a test that checks for forbidden punctuation in the source code. The project is intentionally short. An earlier version had several pages of prose about how to use the templates, and the author decided the templates themselves were the valuable part, so the current README simply points to CLAUDE.md and the starter folder. It is released under the MIT license, so it can be freely copied, changed, and used in your own projects.