Building AVS with the EigenLayer ECDSA Template

Introduction

This guide will walk you through the process of utilizing our ECDSA Template to initiate your own AVS with ECDSA-oriented Smart Contracts. For reference, the Tangle AVS (opens in a new tab) demonstrates an implementation of an AVS using ECDSA contracts.

Generating your project with Cargo Tangle

1. Installation

Before proceeding, ensure you have cargo-tangle installed. If not, you can install it using the following command:

Supported on Linux, MacOS, and Windows (WSL2)

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/tangle-network/gadget/releases/download/cargo-tangle/v0.1.1-beta.7/cargo-tangle-installer.sh | sh

Alternatively, if you prefer installing the CLI from source:

cargo install cargo-tangle --git https://github.com/tangle-network/gadget --force

2. Generating your Project

To generate your project, execute the following command:

cargo tangle blueprint create --name <blueprint_name> --eigenlayer ecdsa

Replace <blueprint_name> with your preferred AVS name. Upon running this command, you'll be prompted with a series of questions regarding your project's configuration and setup. Answer these questions as they appear; if uncertain, the default selection is generally best.

Note

If you choose to use foundry.toml for the Soldeer configuration (the default), you will need to delete the following files from the contracts directory:

• foundry.toml
• remappings.txt
• soldeer.lock

This step allows the generated project to correctly populate dependencies and build out of the box. We plan to address this in future updates to eliminate the need for manual file deletion.

4. Hello, World!

Now that you have generated the project, you can test out the simple example by running:

cargo test

This test just shows that the template generates you a fresh, working AVS structure. All that's left is to add what you want!

5. Customizing your AVS

The next steps depend on your specific requirements, but we offer several resources to assist you:

• By default, the AVS contract generated with this template is named TangleServiceManager.sol (along with related test files TestTangleServiceManager.sol and TangleServiceManager.t.sol). You can use your text editor's find-and-replace function to rename these as desired.
• For various types of event listener examples, refer to this page.
• To gain a deeper understanding of how jobs function, consult the jobs section.