Helidon

Helidon covers both Helidon SE (reactive, lightweight) and Helidon MP (MicroProfile / Jakarta EE style) programming models. Skills should make the chosen model explicit in prompts and generated structure.

Framework overview

AI Coding Skills Helidon work focuses on:

• REST/HTTP endpoints
• Configuration
• Service layering appropriate to SE or MP
• Health checks
• Tests that exercise HTTP behavior

Supported Java versions

Java	Notes
21	Preferred for new projects
17	Supported where Helidon version requires it

Supported framework versions

Target a current stable Helidon 4.x line unless a skill page pins a different version. Document SE vs MP clearly in skill output.

Programming model

Helidon SE

• Explicit server and routing setup
• Functional/handler-oriented endpoints
• Config loaded from Helidon Config APIs

Helidon MP

• CDI-based application model
• JAX-RS resource classes
• MicroProfile Config, Health, and related conventions

Common project structure

src/
├── main/
│   ├── java/
│   │   └── com/example/app/
│   │       ├── Main.java
│   │       └── service/
│   └── resources/
│       └── application.yaml
└── test/
    └── java/

Exact layout differs between SE and MP; skills should document the variant they generate.

Relevant skills

Skill	Status
Helidon Bootstrap	In Progress

Available examples

Helidon SE ServiceReference Helidon SE HTTP service.

Platform availability

Platform	Bootstrap skill status
GitHub Copilot	Planned
Grok	In Progress
Claude Code	Planned

Official documentation

• Helidon documentation

Compatibility notes

• Do not mix SE and MP patterns in a single generated application unless the user explicitly requests a migration path.
• Prefer health and readiness endpoints that match Helidon conventions for the chosen model.
• Keep dependencies aligned with the Helidon BOM for the selected version.