Polymarket Screener

Filter Polymarket prediction markets and track probabilities. Use when screening bets, drafting analyses, outlining trends, tracking price movements.

Filter and analyze prediction markets on Polymarket using their public API. Find undervalued bets, track probability movements, and discover high-opportunity markets.

Comparison: Polymarket Screener vs Manual Browsing

Capability	Manual Browsing	Polymarket Screener
Filter by probability range	❌ Limited	✅ Exact range (e.g., 20%-40%)
Filter by liquidity	❌ No	✅ Min/max liquidity filters
Track probability changes	❌ Manual checking	✅ Automated tracking with delta
Multi-category scan	❌ One at a time	✅ All categories at once
Probability movement alerts	❌ No	✅ Configurable thresholds
Historical probability data	❌ Limited chart	✅ Exportable time series
Bulk opportunity scoring	❌ No	✅ Automated scoring
Custom watchlists	❌ No	✅ JSON watchlist with tracking
Export to HTML report	❌ No	✅ Professional report output
Sort by expected value	❌ No	✅ Built-in EV calculator

Getting Started

No API key needed — Polymarket's public API is free.

# List active markets
bash scripts/polymarket-screener.sh list --limit 20

# Filter by category
bash scripts/polymarket-screener.sh list --category politics --limit 50

# Find high-opportunity markets (low probability, high liquidity)
bash scripts/polymarket-screener.sh opportunities --min-liquidity 50000 --prob-range "5-30"

# Track probability changes
bash scripts/polymarket-screener.sh track --market-id MARKET_SLUG --hours 48

# Generate full screening report
bash scripts/polymarket-screener.sh report --output polymarket-report.html

Market Categories

• politics — Elections, legislation, government actions
• crypto — Price predictions, ETF approvals, protocol events
• sports — Game outcomes, championships, player performance
• entertainment — Awards, releases, celebrity events
• science — Space, climate, research milestones
• business — Earnings, IPOs, M&A, market indices
• world — Geopolitics, international events

Opportunity Scoring

Markets are scored based on:

Score = (Liquidity Factor × 0.3) + (Probability Edge × 0.3) + (Time Value × 0.2) + (Movement × 0.2)

Liquidity Factor:  Higher liquidity = higher score (easier to enter/exit)
Probability Edge:  Markets with probabilities far from 50% but trending = opportunity
Time Value:        Markets resolving soon with high uncertainty = valuable
Movement:          Recent probability shifts indicate new information

What Makes a Good Opportunity?

1. Probability between 15-35% or 65-85% — Enough edge without extreme odds
2. Liquidity > $50K — Can enter meaningful position
3. Recent movement > 5% — Market is actively repricing
4. Resolution within 30 days — Time value is concrete
5. Your own knowledge edge — You know something the market doesn't

Output Formats

Command	Description
markets	Markets
odds	Odds
value-bets	Value Bets
watchlist	Watchlist

API Rate Limits

Polymarket's public API has rate limits. The screener respects these automatically:

• 60 requests/minute for listing endpoints
• 120 requests/minute for market detail endpoints
• Built-in retry with exponential backoff

Disclaimer

⚠️ Prediction markets involve real money and financial risk. This tool provides analysis only — it does not place bets or manage positions. Always do your own research.

💬 Feedback & Feature Requests: https://bytesagain.com/feedback Powered by BytesAgain | bytesagain.com

Commands

Run polymarket-screener help to see all available commands.