teku

Teku is an open-source Ethereum consensus client written in Java and containing a full beacon node and validator client implementation.

See the Changelog for details of the latest releases and upcoming breaking changes.

Useful links

• Ethereum Beacon Chain specification
• Teku user documentation
• Teku REST API reference documentation
• Teku issues
• Contribution guidelines
• Teku Changelog

Teku users

See our user documentation.

Raise a documentation issue or get in touch in the #teku channel on Discord if you've got questions or feedback.

Teku developers

• Contribution Guidelines
• Coding Conventions

Binary Releases

Binary releases are available from the releases page. Binary builds that track the latest changes on the master branch are available on Dockerhub using the develop version or as binary downloads (tar.gz format or zip format).

We recommend only using release versions for Mainnet, but develop builds are useful for testing the latest changes on testnets.

Release notifications are available via: * Sign up to our release announcements email list (release and important announcements only, no marketing) * Follow us on Twitter * teku in Consensys Discord, * Subscribe to release notifications on github for teku

Build Instructions

Install Prerequisites

• Java 25+

Note: Official builds of Teku are performed with Java 25. Building on a more recent version of Java is supported, but the resulting build will not work on earlier versions of Java.

Build and Dist

To create a ready to run distribution:

```shell script git clone https://github.com/Consensys/teku.git cd teku && ./gradlew distTar installDist

This produces:
- Fully packaged distribution in `build/distributions` 
- Expanded distribution, ready to run in `build/install/teku`

### Build and Test

To build, clone this repo and run with `gradle`:

```shell script
git clone https://github.com/Consensys/teku.git
cd teku && ./gradlew

After a successful build, distribution packages are available in build/distributions.

Other Useful Gradle Targets

Code Style

We use Google's Java coding conventions for the project. To reformat code, run:

```shell script ./gradlew spotlessApply

Code style is checked automatically during a build.

## Testing

All the unit tests are run as part of the build, but can be explicitly triggered with:

```shell script
./gradlew test

Special thanks

YourKit

For providing us free open source licenses for their profiler.

YourKit supports open source projects with innovative and intelligent tools for monitoring and profiling Java and .NET applications. YourKit is the creator of YourKit Java Profiler, YourKit .NET Profiler, and YourKit YouMonitor.

OrbStack

For providing us free open source licenses for their application.

OrbStack delivers a fast, light, and easy way to run Docker containers and Linux. Check it out on https://orbstack.dev/.