The Cypress Test Writer is an AI-powered test generator built using Dagger that automates the process of writing end-to-end tests for developers. The tool uses a Large Language Model (LLM) to detect changes in a GitHub repository, generate Cypress tests in TypeScript, run those tests in a controlled environment, and validate the results. This project highlights a powerful shift in software development towards AI-powered workflows that can make developers more efficient by automating repetitive tasks such as writing tests manually. The tool is designed to work in an ephemeral, reproducible environment, similar to how a real developer writes tests locally.