Lit Protocol is a decentralized key management network powered by threshold cryptography. A blockchain-agnostic identity layer, Lit can be used to power encryption, signing, and compute for web applications.

For builders automating workflows is key to creating seamless user experiences. This event listener SDK built by DIGITALAX helps you set up automated triggers and actions across blockchains with minimal code, allowing you to build complex signing applications with Lit.

The SDK is designed around conditionally pre-approved chain reactions that abstract away blockchain account management. You can chain encrypted, conditional actions together that are often on-chain to create complex automation strategies. The signing is done through Lit Actions and Programmable Key Pairs (PKPs), while the actions that trigger them can be based on three core condition functions: webhooks, on-chain events, and intervals.

Event Listener - Automate Web3 Signing with Lit Protocol

The key to the Event Listener SDK is its support for three core conditional functions:


Integrate external APIs and apps via webhooks that let you monitor events like crypto price changes or dApp updates in real-time. This enables your protocol to instantly react to relevant off-chain activities.

On-Chain Events

Subscribe to on-chain events like contract executions or new blocks through the SDK to trigger actions based on key blockchain activities. This unlocks on-demand responses to major on-chain occurrences.


Configure interval timers that regulate how frequently your specified webhooks and chain events are checked. This delivers control over the timing your automations require, from near real-time to scheduled.

With these conditional building blocks, developers can construct automated workflows chained across blockchains to execute transactions, signatures, and other critical operations in a secure, decentralized manner.

The Event Listener SDK unlocks new potential for automation within your Web3 applications. To learn more about integrating conditional workflows leveraging Lit Protocol, be sure to check out the documentation.

How to use the SDK

Installation via NPM

npm i lit-listener-sdk ethers