OPEN SOURCE · APACHE-2.0 · ANNOTATION-DRIVEN

v2.2.0 · Changelog →

One Java class.
One complete
admin system.

The annotation-driven open-source low-code engine. Zero frontend code, zero CRUD boilerplate, with deep AI / LLM integration. Built for Java engineers.

Quick Start →Live Demo GitHub ↗Architecture ↓

SysUser.java

@Erupt(name = "User Mgmt")
public class SysUser {

    @EruptField(
        views = @View(title = "Username"),
        edit  = @Edit(title = "Username")
    )
    private String username;

    @EruptField(edit = @Edit(title = "Status"))
    private Boolean status;
}

AUTO-GEN ≈2s ↓

User Mgmt · Auto-generated

User Mgmt+ NewSearch…

UsernameStatusAction

ARCHITECTURE AT A GLANCE

Any data source, to any UI. Every layer is pluggable.

Nine layers from entry points to runtime: any data source at the bottom, DataProxy intercepting anything in the middle with security spanning the whole chain, AI embedded as a kernel capability, views and components generated from annotations, topped by a modern UI that works out of the box.

Fast startupBoots in 2s ~ 5s Spring Boot native3.x · JDK 17+AI Native19 LLM · MCP Lightweight0.8 MB gzip first screen Extensible everywhereComponents · pages · annotations · plugins Flexible loginCaptcha · QR · LDAP / SSO Truly open sourceApache-2.0 Steady iterationSince 2019 · 60+ releases

L8UI LayerAngular frontend · zero frontend code

L7View LayerOne model · many views · switch at the top

L6Component Layer35 edit components · switch by changing one enum

Basic

AUTO INPUT PASSWORD TEXTAREA NUMBER SLIDER DATE BOOLEAN MAP COLOR RATE

Selection

CHOICE MULTI_CHOICE TAGS AUTO_COMPLETE

Media & editors

ATTACHMENT HTML_EDITOR CODE_EDITOR MARKDOWN SIGNATURE

Relations

REFERENCE_TABLE REFERENCE_TREE CHECKBOX TAB_TREE TAB_TABLE_REFER TAB_TABLE_ADD MULTI_FORM COMBINE

Layout & misc

GROUP DIVIDE CALLOUT BUTTON TPL HIDDEN EMPTY @View 20+ cell renderers Custom upload OSS / local

L5Model LayerAnnotation-driven · one Java class declares it all

L4Intelligence LayerAI as a kernel capability: models are tools, annotations are prompts

L3Proxy & SecurityDataProxy intercepts anything · security spans the chain

L2Data Source LayerAny data source · unified modeling · customizable

Relational

MySQL PostgreSQL Oracle SQL Server H2 JDBC single table

NoSQL & search

MongoDB Elasticsearch Redis In-memory

Files & APIs

Files CSV / JSONL / TSV / INI HTTP REST API S3 object storage

Platforms & directories

Kubernetes LDAP Feishu Bitable Notion

Extension

Multiple data sources Custom data source EruptDao / LambdaQuery

L1Runtime & Ops LayerA standard Spring Boot project, from single node to distributed