Awesome

LoopBack makes it easy to build modern applications that require complex integrations.

Fast, small, powerful, extensible core
Generate real APIs with a single command
Define your data and endpoints with OpenAPI
No maintenance of generated code

Status: General Availability

LoopBack 4 GA (General Availability) has been released in October 2018, read more in the announcement post.

The documentation website is https://loopback.io/doc/en/lb4/.

Learn about the latest and greatest features and technologies in LoopBack 4 by using it for your next project. Start by having a look at Getting Started.

Check the API documentation for all the API usages in each package.

Long Term Support

We don't provide any LTS version for LoopBack 4 yet. Please join the discussion in loopback-next#4398 if you are interested in a version that's less frequently changed.

Version	Status	Published	EOL
LoopBack 4	Current	Oct 2018	Apr 2026 (minimum)
LoopBack 3	End-of-Life	Dec 2016	Dec 2020
LoopBack 2	End-of-Life	Jul 2014	Apr 2019

Please refer to our Long Term Support Policy for more details.

Installation

Make sure you have the following installed:

Package	Version/-s	Link	Note
Node.js	Maintenance LTS (v16) <br/> Active LTS (v18) <br/> Current (v20)	https://nodejs.org/en/about/releases/	<span style="color: yellow;">The use of the current version for production is not recommended</span>.

You can generate a project with our generator or with the CLI as follows:

npm create loopback
npx -p @loopback/cli lb app

To create your first LoopBack 4 application, see Getting Started.

Documentation

Contributing

See the following resources to get you started:

You can join the team by posting a comment to issue #110.

Security

If you think you have discovered a new security issue with any LoopBack package, please do not report it on GitHub. Instead, send an email to security@loopback.io with a full description and steps to reproduce.

See SECURITY.md for more details.