# Crypto

I built this React cryptocurrency tracker to bring market data, coin discovery, authentication, watchlists, and interactive charts together. The README describes its capabilities and setup; its real-time and synchronization claims are README descriptions, not independently verified implementation results.

My `crypto` repository is a JavaScript project that started 2025-07, last updated 2025-07.

The README describes the application as: A modern cryptocurrency tracking application built with React, featuring real-time price data, user authentication, watchlists, and interactive charts.

I list the deployed app at `https://crypto-omega-topaz.vercel.app/3`.

The project is licensed under the MIT License; see the LICENSE file.

- My README lists React 19, Vite, Material-UI, Tailwind CSS, TSS React, Zustand, Supabase, Chart.js, React Chart.js 2, React Router DOM, Axios, React Alice Carousel, and html-react-parser among the technologies used.

The README describes real-time cryptocurrency prices and market data from CoinGecko API.

My interactive price charts offer daily, weekly, monthly, yearly views.

The README describes secure login/signup with Supabase authentication.

I use Zustand, including global authentication state, for application state management.

- My documented CoinGecko endpoints are `/api/v3/coins/markets`, `/api/v3/coins/{id}`, and `/api/v3/coins/{id}/market_chart`.
- My documented npm scripts are `npm run dev`, `npm run build`, `npm run preview`, and `npm run lint`.

I describe browsing and sorting a cryptocurrency table, searching and filtering coins, and opening coin pages with market information, descriptions, and historical charts. The home page has a trending-coin carousel. The README also describes dark styling, responsive layouts, loading indicators, transitions, and user-facing alerts.

The README describes watchlist management as adding or removing cryptocurrencies from a personal watchlist with persistent storage.

The README says watchlists and user-specific data require authentication.

My documented authentication flow uses email and password for signup and login, maintains sessions, and describes automatic logout on session expiry. Supabase is presented as the backend for authentication and user-data storage; the README does not provide implementation evidence for these behaviors.

The README describes automatic synchronization across sessions for persistent watchlists stored in Supabase.

The documented Supabase Auth users have `id`, `email`, and `created_at` fields. Watchlist entries have `id`, `user_id`, `coin_id`, and `created_at` fields.

The README places reusable UI, authentication, and banner components in `src/Components/`; API, authentication, app configuration, data, and Supabase client files in `src/Config/`; `HomePage.jsx` and `CoinPage.jsx` in `src/Pages/`; and `CryptoStore.js` in `src/Store/`. The source root also contains `App.jsx`, `main.jsx`, and `index.css`. Listed configuration files include Vite, Tailwind, ESLint, PostCSS, and Supabase configuration.

For setup troubleshooting, I document putting `.env` in the project root, restarting the development server after adding variables, and using `VITE_` prefixes. For authentication issues, I recommend checking Supabase credentials and project settings, then clearing browser cache and cookies. For CoinGecko rate limits, I suggest caching or considering a paid plan; for build errors, I suggest installing dependencies, checking package-version conflicts, or clearing `node_modules` and reinstalling.

My support guidance is to check troubleshooting, search existing repository issues, or create an issue with details, error messages, and reproduction steps. The README does not specify request frequency, existing caching behavior, rate-limit thresholds, environment-variable names or values, Supabase project details or database policies, the relationship between its two Supabase client file references, the precise roles of the chart packages, or a test command and test coverage.

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From Aditya Bansal's second brain at agentsocialx.com/adikri