Features

Dashboard (New Tab Override)

🔥 Hype Feed

The default tab when you open a new tab. Shows trending social signals from X (Twitter), Reddit, and TikTok in a responsive grid.

• Virality sorting — Cards are sorted by virality score (derived from likes, shares, comments, and views) in descending order.
• Sentiment heatmap — Tile background colour reflects sentiment: green = bullish, red = bearish, slate = neutral.
• Engagement metrics — Each card shows likes, comments, and view counts.
• Clickable links — Cards with URLs are links that open the original post in a new tab.
• Highlight threshold — Posts above your configured virality threshold are visually highlighted.

📈 Market Odds

Prediction market contracts from Polymarket and Kalshi displayed as a treemap heatmap — inspired by Yahoo Finance’s stock heatmap.

• Tile size ∝ volume — Bigger tiles = higher 24h trading volume.
• Tile colour ∝ Yes probability — Green = high Yes, red = high No, slate = ~50/50.
• Star toggle — Click the star on any market to add it to your watchlist.
• Platform badges — 🔵 Polymarket, 🟢 Kalshi.

📰 News Feed

Latest headlines from BBC, CNN, Yahoo Finance, and Google News.

• Source badges — Colour-coded by source (BBC red, CNN dark red, etc.).
• Thumbnail images — When available, a thumbnail is shown.
• Time-sorted — Newest first.
• No login required — News is fetched via public RSS feeds.

🔗 Correlations

A force-directed network graph showing how social signals, news, and market contracts connect.

• Three node types — 📰 News, 📊 Markets, 👽 Social signals.
• Directed edges — Arrows show causal/temporal flow:
  • News → Social: news published before social post
  • Social → Market: social signal correlates with market contract
  • News → Market: news headline correlates with market contract
• Six correlation engines:
  1. 🧮 Heuristic — NER + keyword Jaccard similarity. Fast, no download.
  2. 🧠 Embedding — Semantic similarity via transformer embeddings.
  3. 📊 Sentiment — Sentiment-aware matching via transformer classifier.
  4. 🎯 Zero-Shot — NLI-based zero-shot classification.
  5. 🏷️ ML NER — Transformer-based named entity extraction.
  6. 🤖 LLM — LLM-based correlation scoring.
• Progress bar — ML engines show real-time progress with phase labels.
• Stats bar — Match count, avg/max confidence, spread, elapsed time.
• Run history — Table of past correlation runs for model comparison.

⭐ Watchlist

Markets you have starred for personal tracking.

• Persists in chrome.storage.local across sessions.
• Shows platform badge, question, and when you added it.
• Quick-remove via the star toggle.

📊 History Charts

Historical collection trends rendered as interactive SVG line charts.

• Metric selector — Switch between Markets, Signals, News, Correlations, and Avg Sentiment.
• Hover tooltip — Vertical crosshair with exact values.
• Detail panel — Shows top markets, signals, and news for the hovered snapshot with clickable links.
• No charting library — Pure SVG, no external dependencies.

💬 Community

Links to the TrendCast Telegram group and GitHub Issues page for bug reports and feature requests.

❓ FAQ

In-app FAQ explaining the six correlation engines, how they work, and when to use each one.

⚙️ Settings

Configure every aspect of TrendCast:

• Collection interval — 5 to 1440 minutes (default: 60 = hourly).
• Enabled sources — Toggle Polymarket, Kalshi, X, Reddit, TikTok, BBC, CNN, Yahoo Finance, Google Finance individually.
• Highlight threshold — Virality score threshold for highlighting posts.
• Correlation engine — Choose from 6 engines.
• ML model selection — Pick specific models for each ML engine.
• Reddit subreddits — Customise which subreddits to scrape.
• New tab override — Enable/disable the dashboard as new tab page.

Popup (Toolbar Quick-Launcher)

The popup is a compact 380×500px panel accessible from the toolbar icon.

• Open Dashboard — One-click access to the full dashboard.
• Collect Now — Trigger manual data collection.
• Quick stats — Markets, signals, and news counts at a glance.
• Storage usage indicator — Shows MB used with a colour-coded bar (green/amber/red) and budget info.
• Active sources — Badges showing which data sources are enabled.
• FAQ tab — Compact FAQ for quick reference.
• Settings tab — Quick access to source toggles and collection interval.

Odds Overlay

When you browse X, Reddit, or TikTok, a floating overlay appears in the bottom-right corner showing correlated prediction market odds for the content you’re reading.

• Scoped styles — .trendcast-overlay prefix avoids conflicts with social platform CSS.
• High z-index — Stays above platform UI.
• Closeable — Click × to dismiss.
• Real-time — Updates as you scroll to new posts.

Background Collection

• chrome.alarms-based — Survives service worker termination (MV3).
• Hourly by default — Configurable from 5 minutes to 24 hours.
• Rate-limited — Token-bucket rate limiter prevents API abuse.
• All public APIs — No authentication needed for any source.

Data Export

• CSV — Spreadsheet-friendly format.
• JSON — Full structured data for programmatic use.
• Client-side download — No server round-trip.