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Show HN: FastReact – FastAPI and React Starter Kit for AI SaaS

FastReact is a starter kit combining FastAPI and React for building AI SaaS products. It includes standard SaaS features plus AI-specific components like token-based metering and a demo AI copilot application.

Background

- FastAPI is a modern, high-performance Python web framework for building APIs, widely used in AI/ML backends because it's fast and works well with Python data tools. React is a popular JavaScript library for building interactive user interfaces. An SPA (Single-Page Application) loads once and updates dynamically without full page reloads — common in modern web apps. - A "starter kit" or "starter pack" is a pre-built template that saves developers from setting up everything from scratch: authentication, database connections, payment integration, etc. This one is specifically for AI SaaS (Software-as-a-Service) products. - "Token-based metering" refers to measuring usage by counting tokens (the units AI models like GPT process text in). This is how companies like OpenAI charge customers — by tokens consumed, not by time or users. - A "copilot" app is an AI assistant interface (similar to GitHub Copilot or ChatGPT) embedded inside the product, letting users ask questions or get help via AI.

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