Overview

Reactive Network is an EVM automation layer built around reactive contracts, event-driven smart contracts for cross-chain, on-chain automation. It runs on CometBFT consensus, providing instant finality and roughly 1-second block times while maintaining full EVM compatibility.

Reactive contracts subscribe to event logs across EVM chains and execute Solidity logic automatically when matching events occur. Instead of relying on users or off-chain bots to trigger transactions, they decide autonomously when to send cross-chain callback transactions, providing on-chain if-this-then-that automation for smart contracts.

This makes it possible to build workflows such as automated stop-loss and take-profit orders, liquidation protection, portfolio rebalancing, and yield optimization across chains.

Step 1 — Reactive Basics

Hyperlane → Learn how cross-chain callbacks are transported using Hyperlane.

Reactive Contracts → Learn how reactive contracts subscribe to events and trigger actions.

Step 2 — Reactive Essentials

Reactive Mainnet & Lasna Testnet → Connect to Reactive Mainnet or Lasna Testnet.

Reactive Library → Use Reactive's abstract contracts and interfaces.

Events & Callbacks → Learn how event subscriptions trigger cross-chain callbacks.

Subscriptions → Configure event subscriptions.

RNK RPC Methods → Reference RPC methods for Reactive's nodes.