Legacy Java to Spring Boot Refactoring Engine logo

Legacy Java to Spring Boot Refactoring Engine

by Rohit DasUpdated Jun 19, 2026

Automatically refactor monolithic Java/Jakarta EE codebases into decoupled, containerized Spring Boot 3.4 microservices using precise AST boundary discovery, Maven dependency resolution, and automated PR generation.

java
spring-boot
maven
+7
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How to pay

Subscribe

Monthly billing

$49.99/month

Predictable monthly cost with included usage. Best for steady, high-volume traffic.

  • Unlimited tools within plan limits
  • One API key, billed once a month
  • Cancel any time

Automate Your Java Monolith to Spring Boot Microservices Migration

Migrating legacy Java/Jakarta EE monoliths to microservices is historically one of the most expensive, slow, and risky engineering initiatives. Enterprise teams spend months manually analyzing class files, mapping domain boundaries, resolving Maven dependency hell, rewriting EJB annotations, and fixing build errors.

The Legacy Java to Spring Boot Refactoring Engine utilizes advanced local Abstract Syntax Tree (AST) boundary analysis and automatic scaffolding to decompose legacy codebases into isolated, stateless Spring Boot 3.4 microservices in minutes.


⚑ How It Works

  1. AST Boundary Discovery: Parses the legacy Java source code structure to map domain dependencies and identify natural microservice boundaries.
  2. Automated Scaffolding: Unpacks a production-ready, standardized Spring Boot 3.4 baseline template for the new microservice.
  3. Code & Annotation Translation: Safely migrates POJOs, interfaces, and service layers, automatically replacing legacy Jakarta annotations (like @Stateless, @Inject) with modern Spring equivalents (@Service, @Autowired).
  4. Dependency Resolution: Analyzes the legacy pom.xml or Gradle build, maps legacy libraries to Spring Boot starters, and validates the build dynamically.
  5. Secure Compilation Verification: Safely tests compilation of the newly scaffolded microservice in the background before outputting the final report.

πŸ“Š Free vs. Enterprise Edition

FeatureCommunity (Free)Enterprise ($49.99/mo)
Discover monolith directory structureβœ…βœ…
Identify Java class countsβœ…βœ…
Advanced AST Domain Boundary AnalysisβŒβœ…
Jakarta EE to Spring Boot 3.4 ScaffoldingβŒβœ…
Automated Dependency Mapping & ValidationβŒβœ…
Enterprise Sandbox Execution ControlsβŒβœ…

πŸ’Ό Why Subscribe? (Return on Investment)

Monolith refactoring is a high-cost endeavor. Analyzing and extracting a single domain boundary manually consumes approximately 8 to 12 hours of senior architecture laborβ€”costing upwards of $800+ in engineering overhead per service boundary.

At $49.99/month, this MCP server pays for itself the very first time you scaffold a single microservice.

πŸ›‘οΈ Enterprise Security First

  • Private Code: All AST parsing, file reads, and microservice compilation validation run locally on your secure host workstation using Antigravity CLI sandboxing (proceed-in-sandbox mode). Your code is never sent to third-party APIs.
  • OpenSSF Verified: Release archives are cryptographically signed using Sigstore OIDC keyless transparency logging, ensuring zero supply-chain tampering.