Build The
Smart Money App

Build a complete, production-ready, mobile-first web app called "Smart Money": a dashboard that tracks where the most-informed money is moving, all in one place. No login or signup; it opens straight to the dashboard. === THE BIG IDEA === Three groups tend to know more than the public about where markets are heading: prediction-market bettors, corporate insiders, and members of Congress. All of their activity is public, but it lives in three different places. This app pulls all three into one phone-friendly dashboard and scores how strongly they agree on each stock. === TECH STACK === - Frontend: React + Tailwind CSS. - Backend: FastAPI (Python) + MongoDB. - The backend fetches and caches data from public sources, then exposes clean JSON endpoints the frontend reads. Build it on a phone screen first, then scale up to desktop. === DESIGN SYSTEM === - Dark mode by default. Premium fintech feel: calm, trustworthy, lots of breathing room, flat (no heavy gradients). - Exactly ONE teal accent color, used sparingly for emphasis and the active tab. - Green for buys / bullish, red for sells / bearish. - A monospace font for ALL numbers (prices, percentages, scores, dates). - Rounded cards with soft shadows, generous padding, large tap targets. - Smooth skeleton loaders while data loads, clean empty states, and a small "last updated" timestamp. === GLOBAL LAYOUT === - A top header on every screen: the app name "Smart Money" on the left, and a circular manual "Refresh" button on the right that refetches data and shows a spinner while loading. - Bottom tab navigation with 5 tabs: Conviction (home), Polymarket, Insiders, Congress, Watchlist. The active tab uses the teal accent. - A persistent small footer line on every screen, always visible: "Public-filings data. Not financial advice. Congressional trades are disclosed on a legal delay." === THE DATA (use real public sources, no paid keys) === 1. Polymarket: live prediction-market odds. Use Polymarket's public Gamma API (gamma-api.polymarket.com, no key required). Pull active markets, prioritizing ones tied to public companies, stocks, the economy and earnings, with their current YES/NO odds and recent movement. 2. Insiders: corporate insiders buying or selling their own company's stock. Use SEC EDGAR's free public data for Form 4 filings (no key required, but SEC requires a descriptive User-Agent header with a contact email and limits you to 10 requests per second, so respect both). Count open-market purchases (transaction code P) and sales (code S) only; ignore option exercises, gifts and grants. For each filing capture: ticker, company, insider name and role, buy or sell, share count, dollar value, and filing date. 3. Congress: stock trades disclosed by U.S. representatives and senators. The official sources are the House Clerk's financial disclosure site (disclosures-clerk.house.gov, Periodic Transaction Reports) and the Senate's eFD search (efdsearch.senate.gov). Free third-party Congress-trade APIs come and go, so before you pick one, check that it is live and free, tell me which one you chose, and if none works without a paid key, ask me before signing up for anything. For each trade capture: representative name, ticker, buy or sell, amount range, transaction date, and disclosure date (the STOCK Act allows up to 45 days after the trade to disclose it). - Cache results in MongoDB so the app is fast and doesn't hammer the sources. Refresh on a schedule and when the user taps Refresh. - IMPORTANT: if any live source is temporarily unavailable, fall back to clearly-labeled realistic sample data for that feed (mark it "sample data" in the UI) so the whole app always works end to end and never shows a broken screen. === THE HERO FEATURE: THE CONVICTION SIGNAL === For every stock ticker in the data, compute a single "Conviction" score from 0 to 100 that represents how strongly the three groups are leaning the SAME direction. - For that ticker, take the recent signal from each source (Congress trades, insider trades, and where a related Polymarket market exists, the prediction-market lean) and convert each into a simple bullish / neutral / bearish lean. - The score is HIGHER when more of the three sources agree on the same direction and the activity is recent and larger in size, LOWER when they conflict or there is little activity. Briefly document the exact formula you use in code comments. - When all three sources lean the same direction on a ticker, mark it with a ⚡ "high conviction" badge. - Each ticker card shows: the ticker symbol, company name, the Conviction score (large, monospace), the direction (green up / red down), and small icons showing which of the three signals are firing. === WHAT EACH TAB SHOWS === - Conviction (home): the headline screen. A list of tickers ranked by Conviction score, highest first, with the ⚡ badge on the high-conviction ones. Tapping a ticker opens a detail view that explains WHY: it shows the underlying Congress trades, insider trades, and any Polymarket market for that ticker, so the user can see exactly what's driving the score. - Polymarket: a list of trending prediction markets with their current odds and recent movement. Tap for detail. - Insiders: recent insider transactions from Form 4, newest first; each card shows company, insider name and role, buy/sell (green/red), dollar value, and date. Include a filter for "buys only." - Congress: recent congressional trades, newest first; each card shows the representative, ticker, buy/sell, amount range, transaction date, and disclosure date. - Watchlist: let the user save tickers (a star/add button on any ticker) and see only those, with their Conviction scores. Persist the watchlist (localStorage is fine). === GUARDRAILS === - Never present any score as a buy or sell recommendation. Label the Conviction score as "agreement between public signals," not advice. - Show the source and date for every data point so the user can check it. === POLISH === - Make it genuinely feel like a shipped product: fast, responsive, with thoughtful empty and loading states and a cohesive look across all five tabs. - It must look and feel great on a phone first. Build the entire app end to end, wire up all three data feeds, and implement the Conviction score and the ⚡ badge. When it works in Preview, give me a short list of which data feeds are live and which are on sample data.