Show HN: Codend – Build and publish web apps with AI agents (codend.dev)

Codend has launched as an innovative AI coding agent that simplifies the process of building and publishing web applications. This tool empowers developers to describe tasks in plain language, after which Codend autonomously generates ready-to-merge code changes, runs tests, and submits these changes via pull requests. For example, if tasked with upgrading an application to Next.js 16 and React 19.2, Codend executes the necessary edits, maintains a green build, and ensures all tests pass before submission. This seamless integration allows developers to focus on higher-level decisions without getting bogged down in coding minutiae. The significance of Codend for the AI/ML community lies in its potential to revolutionize software development workflows by automating routine tasks while maintaining oversight through a controlled approval process. Each task operates in its own isolated Linux sandbox, ensuring no interference with the developer's local environment, and providing security through short-lived access tokens for the connected repositories. As AI continues to reshape software engineering, tools like Codend highlight the increasing significance of automation in enhancing productivity, facilitating rapid iteration, and improving code quality—all crucial elements in the fast-evolving landscape of technology.