Polymarket Odds Tracker

Track real-time prediction market odds on Polymarket — elections, crypto, sports, AI, macro events. Filter by tag, volume, end date. No API key required.

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What It Does

Polymarket is the largest on-chain prediction market — billions in volume across politics, crypto, sports, and macro events. This Actor extracts live market data:

• Question + description
• All outcomes with current prices (implied probability)
• Best bid / best ask + spread
• Volume (total + 24h) + liquidity
• End date + days remaining
• Tags and category

Filterable by tag (crypto, politics, sports, ai, etc), min volume, sortable by volume / liquidity / end date.

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Why This Matters

Prediction markets are the best-aggregated probability source for upcoming events. A 70¢ price on "Will Fed cut in March?" reflects the wisdom of capitalized traders, not pundits.

• Macro traders — Fed rate decisions, CPI ranges, recession probability
• Crypto traders — BTC price targets, ETF approvals, token launches
• News/political — election odds with sub-week granularity
• AI/tech — AGI timelines, GPT release dates, company outcomes

The official Polymarket UI is great for browsing; this Actor turns it into a programmatic data feed for dashboards, alerts, and bots.

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Input

Field	Type	Default	Description
tags	string[]	[]	Filter by tag (crypto, politics, sports, ai). Empty = all
minVolumeUsd	integer	10000	Min market volume
activeOnly	boolean	true	Skip closed/resolved markets
sortBy	string	volume_desc	volume_desc, liquidity_desc, end_date_asc, created_desc
limit	integer	50	Max results (1–500)

Example: Top crypto markets

{"tags": ["crypto"], "minVolumeUsd": 100000, "sortBy": "volume_desc"}

Example: Soon-expiring high-liquidity markets

{"sortBy": "end_date_asc", "minVolumeUsd": 500000, "limit": 20}

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Output

{
  "id": "0x...",
  "slug": "will-btc-hit-100k-by-end-of-march-2026",
  "question": "Will BTC hit $100K by end of March 2026?",
  "category": "Crypto",
  "tags": ["Crypto", "Bitcoin"],
  "active": true,
  "end_date": "2026-03-31T23:59:00Z",
  "days_until_end": 124.5,
  "volume_usd": 4250000,
  "volume_24h_usd": 82000,
  "liquidity_usd": 850000,
  "best_bid": 0.34,
  "best_ask": 0.36,
  "spread": 0.02,
  "outcomes": [
    {"name": "Yes", "price": 0.35, "implied_pct": 35.0},
    {"name": "No",  "price": 0.65, "implied_pct": 65.0}
  ],
  "leading_outcome": {"name": "No", "price": 0.65, "implied_pct": 65.0},
  "polymarket_url": "https://polymarket.com/event/..."
}

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Pricing

• $0.001 per market returned

Examples:

• Top 50 crypto markets: $0.05
• Full sweep 500 markets: $0.50

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Data Source

Polymarket Gamma API — official public endpoint, no auth.

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Related Actors

• Crypto ETF Flow Tracker — Institutional flow context for ETF-approval predictions.
• Smart Money Wallet Tracker — On-chain positioning vs prediction-market odds.
• Bitcoin Mempool Analytics — Real-time BTC network state.

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