This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down list at the bottom of the left panel and select the desired version.

Contributing to Zephyr

Contributions from the community are the backbone of the project. Whether it is by submitting code, improving documentation, or proposing new features, your efforts are highly appreciated. This page lists useful resources and guidelines to help you in your contribution journey.

General Guidelines

Contribution Guidelines

Learn about the overall process and guidelines for contributing to the Zephyr project.

This page is a mandatory read for first-time contributors as it contains important information on how to ensure your contribution can be considered for inclusion in the project and potentially merged.

Contributor Expectations

This document is another mandatory read that describes the expected behavior of all contributors to the project.

Coding Guidelines

Code contributions are expected to follow a set of coding guidelines to ensure consistency and readability across the code base.

This page describes these guidelines and introduces important considerations regarding the use of inclusive language.

Proposals and RFCs

Learn when and how to submit RFCs (Request for Comments) for new features and changes to the project.


The Zephyr project thrives on good documentation. Whether it is as part of a code contribution or as a standalone effort, contributing documentation is particularly valuable to the project.

Documentation Guidelines

This page provides some simple guidelines for writing documentation using the reSTructuredText (reST) markup language and Sphinx documentation generator.

Documentation Generation

As you write documentation, it can be helpful to see how it will look when rendered.

This page describes how to build the Zephyr documentation locally.

Dealing with external components

Contributing External Components

Basic functionality or features that would make useful addition to Zephyr might be readily available in other open source projects, and it is recommended and encouraged to reuse such code. This page describes in more details when and how to import external source code into Zephyr.

Contributing External Tooling

Similarly, external tooling used during compilation, code analysis, testing or simulation, can be beneficial and is covered in this section.

Binary Blobs

As some functionality might only be made available with the help of executable code distributed in binary form, this page describes the process and guidelines for contributing binary blobs to the project.

Zephyr Contributor Badge

When your first contribution to the Zephyr project gets merged, you’ll become eligible to claim your Zephyr Contributor Badge. This digital badge can be displayed on your website, blog, social media profile, etc. It will allow you to showcase your involvement in the Zephyr project and help raise its awareness.

You may apply for your Contributor Badge by filling out the Zephyr Contributor Badge form.

Need help along the way?

If you have questions related to the contribution process, the Zephyr community is here to help. You may join our Discord channel or use the Developer Mailing List.