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Overview

Bud is a Spring Boot development agent that scaffolds, modifies, and analyzes Spring Boot projects through 16 deterministic MCP tools. It runs as an ACP agent in JetBrains IDEs (and any ACP-compatible editor), delegating to the developer’s enterprise-approved CLI. No API key needed. Bud delegates to whichever CLI your IT department provisioned — Claude Code for v1, with Gemini CLI and Codex planned. The billing, security review, and compliance audit are someone else’s problem.

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Key Features

  • 16 MCP tools — create_project, add_dependency, add_actuator, add_security, analyze_project, and more
  • 8 project templates — REST, JPA, Security, Actuator, Batch, Scheduling, Spring AI, Minimal
  • Enterprise-safe — All tools are deterministic (no LLM calls). The LLM comes from your approved CLI.
  • IDE-native — Shows up in JetBrains AI Chat dropdown via ACP protocol
  • Production templates — Constructor injection, slice tests, ProblemDetail errors, proper layering

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Architecture

IDE (JetBrains / Zed / VS Code)
  └─ ACP Client
       └─ Bud ACP Agent
            └─ AgentClient → Claude Code CLI
                 └─ Bud MCP Server (16 tools)
                      └─ bud-core (pure Java library)

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Documentation

Getting Started

Install Bud and scaffold your first project

Tools & Templates

All 16 tools and 8 templates with descriptions

Architecture

Three modules, two protocols, zero API keys

GitHub

Source code and releases

Loopy

Bud’s origin — extracted from Loopy’s boot layer