The Missing Developer UI for Spring Boot and Quarkus BootUI, a new open-source developer console from Julien Dubois, adds an embedded, local-only UI to Spring Boot 4 and Quarkus applications, serving a shared Vue interface and REST contract from a framework-neutral engine. The tool activates only in local development and includes an opt-in Model Context Protocol server for AI coding agents like GitHub Copilot and Claude Code, plus integration with Coffilot, a GitHub Copilot canvas extension. BootUI is licensed under Apache License 2.0. BootUI adds an embedded, local-only developer console to your application. It runs on Spring Boot 4 servlet or WebFlux and Quarkus , serving the same Vue UI and REST contract /bootui and /bootui/api/ by default, configurable with bootui.path / bootui.api-path from a shared, framework-neutral engine — add the matching Spring Boot starter or the Quarkus extension and BootUI activates only in local development. Read the documentation at https://www.julien-dubois.com/boot-ui/ https://www.julien-dubois.com/boot-ui/ . | Topic | Link | |---|---| | Setup | | https://www.julien-dubois.com/boot-ui/features https://www.julien-dubois.com/boot-ui/features https://www.julien-dubois.com/boot-ui/properties https://www.julien-dubois.com/boot-ui/properties https://www.julien-dubois.com/boot-ui/ai-agents https://www.julien-dubois.com/boot-ui/ai-agents https://www.julien-dubois.com/boot-ui/try-sample-app https://www.julien-dubois.com/boot-ui/try-sample-app https://www.julien-dubois.com/boot-ui/repository https://www.julien-dubois.com/boot-ui/repository BootUI exposes a local, opt-in Model Context Protocol https://modelcontextprotocol.io server so AI coding agents GitHub Copilot, Claude Code, … can run its advisors and read runtime diagnostics while fixing your code. It also pairs with Coffilot https://github.com/jdubois/coffilot , a GitHub Copilot canvas extension that builds, runs, and scans your app from the GitHub Copilot App's side panel. See the AI agents guide https://www.julien-dubois.com/boot-ui/ai-agents . Licensed under the Apache License, Version 2.0 /jdubois/boot-ui/blob/main/LICENSE .