Developer Builds AI Rap Lyric Generator Using Gemini API, LangChain, and Cloud Run

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A developer has launched Rap Dojo, a web service that generates rap lyrics using Google's Gemini API, motivated by a Google and Zenn hackathon focused on Gemini-based projects. The tool allows users to create rap lyrics by entering just a few words — such as their name or a recent experience — without needing to craft complex prompts. The backend is built in Python using LangChain and hosted on Google Cloud Run, while the frontend relies on plain HTML, CSS, and JavaScript rather than a heavy framework. Cloud Run's serverless model was chosen to avoid running a full-time server given the site's modest traffic. The developer prioritised architectural simplicity, citing easier maintenance, fewer dependencies, and better compatibility with AI coding tools as key advantages for small indie projects.

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