PriceAlerter

Overview

PriceAlerter monitors a Chainlink price feed and emits alerts when the price crosses configured thresholds. Demonstrates AutoLoop for monitoring and notification patterns.

• Base: AutoLoopCompatible
• VRF: No
• Gas: ~90,000 per tick
• Use case: Price monitoring, automated trading signals, DeFi triggers

Key Concepts

• Uses AutoLoopCompatible for pure automation
• Integrates with Chainlink price feeds for real-time data
• shouldProgressLoop() checks if the price has crossed a threshold since last check
• progressLoop() emits an alert event and updates the stored price

Deploy

forge create examples/PriceAlerter.sol:PriceAlerter \
  --constructor-args $PRICE_FEED_ADDRESS $THRESHOLD \
  --rpc-url $RPC_URL \
  --private-key $PRIVATE_KEY

This example shows that AutoLoop isn't limited to games — it works for any contract that needs periodic automated execution.