Overview

This section contains practical demos of how Reactive Network enables event-driven, cross-chain smart contract automation. Each demo highlights a specific pattern from basic event callbacks to advanced DeFi protection mechanisms.

Reactive Network Basic Demo

The Reactive Network Basic Demo is the starting point. It demonstrates the lifecycle of a Reactive contract: an event emitted on an origin chain is detected by a Reactive contract, which then triggers a callback on a destination chain. If you’re new to Reactive Network, begin here.

Uniswap V2 Stop Order Demo

The Uniswap V2 Stop Order Demo implements automated stop orders on Uniswap V2 liquidity pools. A Reactive contract subscribes to Sync events from a Uniswap pair. When the exchange rate crosses a user-defined threshold, it triggers a callback that executes the swap on the destination chain.

Uniswap V2 Stop-Loss & Take-Profit Orders Demo

The Uniswap V2 Stop-Loss & Take-Profit Orders Demo expands on stop orders by supporting both stop-loss and take-profit strategies within a personal deployment. A user-owned Reactive contract monitors pair reserve updates and triggers execution when thresholds are crossed.

Aave Liquidation Protection Demo

The Aave Liquidation Protection Demo shows how to automate position protection on Aave. A Reactive Contract subscribes to periodic CRON events and triggers health checks for a user’s lending position. If the health factor drops below a defined threshold, the callback contract executes protection actions: depositing collateral, repaying debt, or both.

Leverage Loop Demo

The Leverage Loop Demo automates leveraged looping on Aave V3. The user deposits collateral into a personal smart account, and a Reactive contract detects the deposit and runs the loop automatically until the target health factor is reached or the maximum iteration count is hit.

Automated Prediction Market Demo

The Automated Prediction Market Demo implements a prediction market with automated payouts. Users create questions, participants buy shares in outcomes, and a multisig resolves the result. Once the PredictionResolved event is emitted, a Reactive contract detects it and triggers batch distribution of winnings.

Gasless Cross-Chain Atomic Swap Demo

The Gasless Cross-Chain Atomic Swap Demo enables trustless token exchanges across two blockchains without bridges or custodians. Two users initiate and acknowledge a swap on their respective chains, deposit tokens, and a Reactive contract orchestrates the rest — syncing state, confirming deposits, and completing the swap on both sides automatically. Users only pay gas on their own chain.

Approval Magic Demo

The Approval Magic Demo shows subscription-based automation triggered by ERC-20 approval events. A Reactive contract monitors approval logs, while a service contract manages user registrations. When an approval is detected, the system can automatically initiate follow-up actions such as swaps or exchanges.

Hyperlane Demo

The Hyperlane Demo shows cross-chain communication using Hyperlane alongside Reactive Network. This example shows how Reactive can integrate with external messaging protocols for two-way cross-chain interaction.

CRON Demo

The Cron Demo shows time-based automation using Reactive Network’s built-in CRON events. Instead of waiting for external transactions, the Reactive contract subscribes to periodic system-emitted events and executes logic on a fixed schedule. This pattern is useful for recurring tasks such as scheduled updates, reward distributions, or regular DeFi position checks.