REST API Generator — Spring Boot Scaffolding in 30s

Generate Spring Boot APIs
in 30 seconds

Type a plain-English description. Get a complete ZIP with Entity, DTO, Service, Controller, Repository, MapStruct mapper, pagination, error handling, and Docker setup.

Designed for developers who want to move from idea to runnable backend faster — with less repetitive setup and a smoother starting point.

~30s

vs 2–3 hrs manual

layers generated

100%

runnable output

install needed

Server

checking…

Write Prompt

Describe your entities

Generate Spec

POST /generator/spec

Download ZIP

POST /generator/code

PROMPT

Separate entities with blank lines

⌘⏎ generate

Ready — write a prompt and click Generate Spec

Prompt & Spec History

0 / 20

No history yet. Generate a spec to save it.

Entity Relationship Graph

No spec loaded

Generate a spec to see entity relationships.

Validation & Diagnostics

No validation issues yet.

No fix suggestions yet.

JSON SPEC

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Entities will appear here…

📋

JSON specification will appear here

GENERATED FILES

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File tree will appear here…

📁

Generated file tree will appear here

Everything you’d write by hand — done for you

Every layer of a production Spring Boot 3 API, generated and wired together from a single plain-English prompt.

🏗️

Full Layer Stack

Entity · DTO · Repository · Service · Controller — all wired, ready to run.

🔗

JPA Relationships

@ManyToOne · @OneToMany · @ManyToMany with join tables, FetchType.LAZY, cascade.

✅

Bean Validation

@NotNull · @Email · @Min · @Max · @Size — extracted automatically.

📄

Pagination & Filtering

JpaSpecificationExecutor + PagedResponse. Sortable, filterable endpoints.

🗺️

MapStruct Mappers

Generated <Entity>Mapper interface for clean DTO ↔ Entity conversion.

🐳

Docker Ready

Dockerfile + docker-compose.yml with PostgreSQL/MySQL + Adminer UI.

🚨

Error Handling

GlobalExceptionHandler · ErrorResponse · ResourceNotFoundException — pre-wired.

🧪

Test Scaffolding

Generated unit and integration test stubs per entity, ready to fill.

Run it your way

Docker with Ollama or source build — simple local setup.

Run locally — how to start

# A) Run this GENERATOR app
docker run -p 8080:8080 ghcr.io/rrezartprebreza/rest-api-generator:latest

# B) With Ollama LLM (~2 GB disk)
docker compose --profile llm up --build
docker exec rest-api-generator-ollama-1 ollama pull llama3.2

# C) Build from source
git clone https://github.com/rrezartprebreza/rest-api-generator
cd rest-api-generator && ./gradlew run --args="serve --port 8080"

# D) Run YOUR generated Spring Boot app
unzip scaffold.zip -d my-api && cd my-api
./gradlew bootRun

Generate Spring Boot APIsin 30 seconds

Export Specification

Import Specification

⌨️ Keyboard Shortcuts

Everything you’d write by hand — done for you

Run it your way

Generate Spring Boot APIs
in 30 seconds