Price Alert Tool

WHAT IT DOES

Price Alert Tool lets you monitor asset prices and receive on-screen alerts when your target prices are reached. You define alerts with asset pair, target price, and condition (above or below). The tool polls current prices at your specified interval and triggers an alert when the condition is met. It displays the current status of each alert and a history of triggered alerts. This is essential for traders and investors who want to track price movements without constantly watching charts. It reads the current network chain ID from your wallet provider for context, but price checks are performed locally based on user-provided price feeds.

HOW TO USE

Connect your wallet using the "Connect" button (required for network context). Select the target network (Ethereum Mainnet, Sepolia, Polygon, BSC, Arbitrum, Optimism, and testnets are supported). Add price alerts with asset pair, target price, and condition (above/below). Enter current market prices for each pair in the price feed section. Set the check interval in seconds. Click "Start price alerts" — the tool will poll prices and display alerts when conditions are met. Click "Stop alerts" to stop monitoring. The entire operation is read-only — no transactions are signed or sent.

TECHNICAL MECHANISM

The tool stores all configured alerts and current price feeds. At each interval, it compares the current price of each asset pair against the target price using the specified condition (above or below). When the condition is met, an alert is added to the history and displayed on the screen. The tool uses setInterval for polling and does not use WebSocket or real-time data feeds. The tool uses ethers.js v5.7.2 for network context but performs all price comparisons locally. Results are displayed with color-coded status indicators: red (alert triggered), yellow (waiting). The tool does not send external notifications — it only displays on-screen alerts.

WHAT IT CANNOT SEE

The tool cannot guarantee real-time price alerts due to polling latency. It cannot send push notifications, emails, or SMS without additional services. It is limited by RPC provider availability and price feed freshness. It cannot monitor prices that require complex multi-source aggregation without full integration. It cannot detect price movements between polling intervals. It cannot alert on conditions that require historical price data.

PLEASE NOTE

This tool is for educational and analytical purposes. The tool does not persist any data; all state is lost on page reload. EVM chains only.