Crypto Alerter: Price Alarms & Volatility Warnings

Monitor crypto prices with threshold alerts, volatility warnings, and real-time notifications in your browser.

Monitor crypto prices with threshold alerts, volatility warnings, and real-time notifications in your browser. What it does. Crypto Alerter: Price Alarms & Volatility Warnings tracks live cryptocurrency prices in a Chrome side panel using CoinGecko public price API, Alternative.me Fear & Greed / market index API. It supports a watchlist and price alerts; selecting a coin name on a page and using the context menu looks it up instantly. Key features (found in code): - Side-panel UI (`sidepanel.html`) opened via `chrome.sidePanel` (background.js:22, background.js:52) - Right-click context-menu action "Check price of "%s"" via `chrome.contextMenus` (background.js:16, background.js:43) - Data source: CoinGecko public price API (`api.coingecko.com`, background.js:3) - Data source: Alternative.me Fear & Greed / market index API (`api.alternative.me`, background.js:4) - Embedded TradingView chart widget (`s.tradingview.com`) - Periodic background refresh via `chrome.alarms` (background.js:29, background.js:37) - Desktop notifications via `chrome.notifications` (background.js:117, background.js:127) - Personal watchlist, stored locally in `chrome.storage.local` (background.js:24) - User-configurable alerts, stored locally in `chrome.storage.local` (background.js:7) Who it's for. Crypto holders and traders who want a lightweight always-available price tracker with alerts. No background data collection, no ads, no tracking, no account required.