Lealone

What it is

Lealone is a full-stack autonomous intelligent agent platform implemented in Java. The README describes it as a high-performance, full-stack, self-evolving general agent for atmosphere programming and enterprise applications.

How it works

The README lists features such as a plugin system, document data models with MongoDB-compatible protocols, and support for transactional or non-transactional sequences. It also indicates a modular scheduler system with ClientScheduler, GlobalScheduler, and EmbeddedScheduler. Commands for configuring large models (llm) via an agent window are shown, along with SQL-like service definitions and executions.

Getting started

Install and run steps quoted from the README:

• Build: mvn assembly:assembly -Dmaven.test.skip=true
• Run: java -jar lealone-8.0.0-SNAPSHOT.jar
• Open agent: java -jar lealone-8.0.0-SNAPSHOT.jar -agent

Configure LLM in the agent window with a SQL-like block:

set llm (
    provider: 'doubao', --目前支持doubao和deepseek
    model: 'doubao-seed-2-0-pro-260215',
    api_key: '替换成你的apikey'
);

Example for creating a simple service and executing it:

create service if not exists my_service (
    hello(name varchar) varchar,
    get_current_time() varchar
);

execute service my_service hello('zhh');

execute service my_service get_current_time();

Other usage includes running a services SQL file:

运行: `java -jar lealone-8.0.0-SNAPSHOT.jar services.sql`

Recent releases

Latest release: lealone-6.0.1 (2024-08-18) with bug fixes including:

• Fixed IndexOutOfBoundsException when calling PreparedStatement.setFetchSize with ResultSet.next
• Corrected display of sql> prompt when running in embedded mode via command line
• Fixed incorrect parameter optimization for stored procedures when parameters are not simple constants

Previous release: lealone-6.0.0 (2024-03-19) introducing new features such as a new concurrency control system, new schedulers, enhanced plugin system, document data model with MongoDB-compatible protocol/API, and support for transactional or non-transactional Sequen. Also listed Lealone 5.2.2 and 5.2.1 bug fixes and 5.2.0 GA with note about LT S status.

Traction

Stars: 2578. Forks: 522. Open issues: 33. Last push: 2026-07-02.

Behind the repo

Repository is by Lealone; no external startup/company link is provided in the FACTS block beyond the repo metadata.

Caveats

License: none listed. Language: Java. Created: 2013-01-08. Last push: 2026-07-02.