# 0xinsider

> Know what the best prediction market traders are doing before everyone else. The trading terminal for Polymarket and Kalshi.

## What 0xinsider Does

0xinsider is the Bloomberg Terminal for prediction markets. It shows you what the smartest traders are buying and selling in real time — so you can follow the money instead of guessing.

- **Real-Time Whale Trades**: See every large trade the moment it happens across Polymarket and Kalshi. Know who's buying, what they're buying, and how much
- **Trader Grades (S–F)**: Every trader gets a letter grade based on their track record. Follow S-grade traders, fade F-grade ones
- **Smart Money Signals**: Instant signal scoring on every trade — is this a skilled trader or noise?
- **Trader Profiles**: Deep analytics on 42,000+ traders — P&L history, win rates, strategy breakdowns, activity heatmaps, and performance benchmarks
- **Market Intelligence**: See which side the smart money is on for any market, who the top holders are, and how positions are shifting
- **Large Position Detection**: Catches whales who split big bets into many small trades to stay under the radar
- **Custom Alerts**: Get notified when specific traders make moves, when whale trades hit certain markets, or when new wallets appear
- **Insider Radar**: Flags suspicious trading patterns that could indicate insider knowledge
- **Instant Search**: Find any market or trader across both platforms instantly
- **Category Leaderboards**: See who's the best at crypto, politics, sports, earnings, and 30+ other categories
- **Automated Reports**: Daily, weekly, and monthly market intelligence reports delivered to your inbox
- **Compare Traders**: Side-by-side comparison of any two traders
- **Dataset Exports**: Download raw data for your own analysis

## Platform Stats

- 42,000+ traders tracked with grades and analytics
- 18M+ positions analyzed
- 782,000+ markets covered

## Who It's For

- **Prediction market traders** who want an edge — see what the best are doing before prices move
- **Researchers and analysts** studying prediction market dynamics and trader behavior
- **Journalists and media** tracking smart money flows in politics, crypto, sports, and current events
- **Quant traders** who need institutional-grade data feeds and analytics

## Pricing

- **Free tier**: 10 best trades from yesterday (S/A grade), leaderboard, trader profiles with grades, P&L charts and heatmaps
- **Insider tier**: $89/mo or $42/mo billed annually ($499/yr) — real-time feed, full trade history (unlimited), signal scoring, smart money flow, 40+ quant metrics, insider radar, custom alerts, large positions, dataset exports, automated reports, email digests
- [Pricing page](https://0xinsider.com/pricing)

## Content Index

### Research Articles
- [The 10 Highest Earners on Polymarket: $96.5 Million in Profit From 10 Wallets](https://0xinsider.com/research/polymarket-highest-earners-top-10)
- [Bots vs Humans on Polymarket: 880 Algorithms Against 9,700 Traders](https://0xinsider.com/research/bots-vs-humans-polymarket-trading)
- [When You Trade Matters: The $36,000 Gap Between Morning and Afternoon Traders](https://0xinsider.com/research/when-to-trade-prediction-markets)
- [How gabagool22 Turned Crypto Volatility Into $788K Profit on Polymarket](https://0xinsider.com/research/gabagool22-polymarket-trader-analysis)
- [Large Trade Tracking on Prediction Markets: Where to See Live Trades and Why They Move Prices](https://0xinsider.com/research/whale-tracking-live-trades-prediction-markets)
- [How to See the Biggest Kalshi Trades in Real Time](https://0xinsider.com/research/biggest-kalshi-trades-real-time)
- [What Separates Winning Polymarket Traders from Everyone Else](https://0xinsider.com/research/what-separates-winning-polymarket-traders)
- [15-Minute Markets on Polymarket: 86% Win Rate, Negative P&L — Only 33% of Traders Profit](https://0xinsider.com/research/15-minute-prediction-markets)
- [NBA Betting on Polymarket: What 16,382 Large Trades Reveal About Winning](https://0xinsider.com/research/nba-betting-polymarket-whale-data)

### Learn Guides
- [Polymarket Fees Explained: What Every Trader Needs to Know](https://0xinsider.com/learn/polymarket-fees-explained)
- [Kalshi Fees Explained: What Every Trader Needs to Know](https://0xinsider.com/learn/kalshi-fees-explained)
- [How to Track Geopolitical Bets on Prediction Markets](https://0xinsider.com/learn/how-to-track-geopolitical-bets-prediction-markets)
- [How to Set Up Custom Trade Alerts on 0xinsider](https://0xinsider.com/learn/how-to-set-up-custom-trade-alerts)
- [How to Read a Polymarket Order Book](https://0xinsider.com/learn/how-to-read-polymarket-order-book)
- [How to Use the Kelly Criterion for Prediction Markets](https://0xinsider.com/learn/how-to-use-kelly-criterion-prediction-markets)
- [How to Spot Insider Trading on Polymarket](https://0xinsider.com/learn/how-to-spot-insider-trading-polymarket)
- [How to Build a Prediction Market Portfolio](https://0xinsider.com/learn/how-to-build-prediction-market-portfolio)
- [How to Analyze a Prediction Market Trader's Track Record](https://0xinsider.com/learn/how-to-analyze-trader-track-record)
- [How to Trade Prediction Markets During Elections](https://0xinsider.com/learn/how-to-trade-prediction-markets-elections)
- [How to Use Large Trade Data in Prediction Markets](https://0xinsider.com/learn/how-to-use-whale-trade-data)
- [How to Trade Prediction Markets: A Beginner's Guide](https://0xinsider.com/learn/how-to-trade-prediction-markets)
- [How Bayesian Confidence Scoring Works: The Math Behind Trader Grades](https://0xinsider.com/learn/how-bayesian-confidence-scoring-works)
- [How to Follow Trades in Real-Time on Polymarket](https://0xinsider.com/learn/how-to-follow-trades-real-time)
- [Why Prediction Market Odds Can Add Up to More Than 100%](https://0xinsider.com/learn/why-prediction-market-odds-exceed-100-percent)
- [Prediction Market Trader Grades Explained: What S, A, B, C, D, and F Actually Mean](https://0xinsider.com/learn/prediction-market-trader-grades-explained)

### Platform Comparisons
- [Polymarket vs Kalshi: Which Prediction Market Is Right for You?](https://0xinsider.com/compare/polymarket-vs-kalshi)
- [Polymarket vs Metaculus: Trading vs Forecasting](https://0xinsider.com/compare/polymarket-vs-metaculus)
- [Polymarket vs PredictIt: What Changed](https://0xinsider.com/compare/polymarket-vs-predictit)
- [Kalshi vs Robinhood Event Contracts](https://0xinsider.com/compare/kalshi-vs-robinhood-event-contracts)
- [Prediction Markets vs Sports Betting: What's the Difference?](https://0xinsider.com/compare/prediction-markets-vs-sports-betting)

### Category Leaderboards
- [Crypto Traders](https://0xinsider.com/categories/crypto)
- [Politics Traders](https://0xinsider.com/categories/politics)
- [Nba Traders](https://0xinsider.com/categories/nba)
- [Nfl Traders](https://0xinsider.com/categories/nfl)
- [Soccer Traders](https://0xinsider.com/categories/soccer)
- [Baseball Traders](https://0xinsider.com/categories/baseball)
- [Hockey Traders](https://0xinsider.com/categories/hockey)
- [Mma Traders](https://0xinsider.com/categories/mma)
- [Tennis Traders](https://0xinsider.com/categories/tennis)
- [Pop Culture Traders](https://0xinsider.com/categories/pop-culture)
- [Science Tech Traders](https://0xinsider.com/categories/science-tech)
- [Geopolitics Traders](https://0xinsider.com/categories/geopolitics)

### Reports
- [Prediction Market Reports](https://0xinsider.com/reports) — Daily, weekly, and monthly analytics
- [Daily Report Example](https://0xinsider.com/reports/daily/2026-02-16)
- [Weekly Report Example](https://0xinsider.com/reports/weekly/2026-02-10_2026-02-16)
- [RSS Feed](https://0xinsider.com/feed.xml)

### Key Pages
- [Terminal](https://0xinsider.com/terminal) — Real-time whale trade feed
- [Leaderboard](https://0xinsider.com/leaderboard) — Top prediction market traders ranked
- [Large Positions](https://0xinsider.com/large-positions) — Hidden whale accumulation
- [Trading Strategies](https://0xinsider.com/trading-strategies) — How the best traders operate
- [Custom Trade Alerts](https://0xinsider.com/whale-alerts) — Get notified on the trades that matter
- [Smart Money](https://0xinsider.com/smart-money) — Where the smart money is flowing
- [Earnings Markets](https://0xinsider.com/earnings) — Earnings-specific trading
- [Analytics](https://0xinsider.com/analytics) — Platform-wide analytics
- [Compare Traders](https://0xinsider.com/compare/traders) — Head-to-head trader comparison
- [Exchanges](https://0xinsider.com/exchanges) — Polymarket and Kalshi overview
- [Datasets](https://0xinsider.com/datasets) — Download raw data for your own analysis
- [About](https://0xinsider.com/about)
- [Transparency & Methodology](https://0xinsider.com/transparency)
- [Pricing](https://0xinsider.com/pricing)
- [FAQ](https://0xinsider.com/learn/faq)
- [Glossary](https://0xinsider.com/learn/glossary)
- [Changelog](https://0xinsider.com/changelog)

## Developer API

Prediction market intelligence API for AI agents, trading bots, and research tools.

### Authentication

All endpoints except /api/v1/health require an API key via Bearer token:
  Authorization: Bearer oxi_sk_live_...

Get your key: https://0xinsider.com/developers
Requires active Insider subscription ($89/mo).

### Endpoints

- GET /api/v1/trader/{address} — Trader intelligence: grade (S-F), ML-detected strategy, P&L, win rate, category strengths. Expandable fields: ?expand[]=strategy&expand[]=categories&expand[]=quant_metrics
- GET /api/v1/market/{condition_id}/intel — Smart money flow for a specific market: net USD flow, direction, top trader positions, whale trade count. Timeframes: 1h, 4h, 24h, 7d
- GET /api/v1/whale-trades — Recent large trades with signal scoring (0-1). Filters: min_size, category, min_grade (S-F). Category uses the effective market category fallback from stored market metadata. Cursor pagination
- GET /api/v1/leaderboard — Top traders ranked by grade, P&L, volume, or win rate. Filters: category, strategy. Cursor pagination
- GET /api/v1/markets/search — Search prediction markets by keyword. Returns representative market matches with status, category, and platform. Filters: category, status (active/closed/all). Cursor pagination
- GET /api/v1/markets/explore — Browse whale-active titled markets as visible discovery entries. Returns grouped event rows or standalone markets plus live category/platform facets. Filters: category, status, platform, sort, q
- GET /api/v1/insider-radar — Suspicious trading patterns: pre-resolution accumulation, coordinated wallets, insider-like behavior. Filters: min_suspicion (0-100), severity
- GET /api/v1/health — Unauthenticated health check with status, db, and cache flags

### Response Format

All responses wrapped in: { "object": "trader|market_intel|health|list|error", "data": ..., "meta": { "request_id": "req_...", "cached": bool, "cache_age_s": int } }
Lists: { "object": "list", "data": [...], "has_more": bool, "next_cursor": "..." }
Errors: { "object": "error", "error": { "code": "...", "message": "...", "doc_url": "..." } }

### Rate Limits

100 requests/minute per user (sliding window).
Headers: X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-Request-Id

### MCP Server

Install/setup: npx -y @0xinsider/mcp init
Detects local Claude Code or Cursor configs, plus installed Codex or Gemini CLI clients.
Run via stdio: OXINSIDER_API_KEY=oxi_sk_live_... npx -y @0xinsider/mcp
npm: https://www.npmjs.com/package/@0xinsider/mcp

Tools: get_trader, get_market_intel, get_whale_trades, get_leaderboard, search_markets, get_insider_radar
Resources: oxinsider://docs/api, oxinsider://docs/agents, oxinsider://data/leaderboard, oxinsider://data/whale-trades
Prompts: analyze_trader, market_report, trading_signals

- [Full API Reference](https://0xinsider.com/llms-full.txt)
- [Agent Instructions](https://0xinsider.com/agents.md)
- [OpenAPI Spec](https://0xinsider.com/api/v1/openapi.json)

## Contact

- Website: https://0xinsider.com
- X/Twitter: https://x.com/0xinsider
- Discord: https://discord.gg/XzfJ2C6b4k