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from $2.00 / 1,000 polymarket contract extracteds

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Polymarket Prediction Markets Scraper — Odds, Volume, Order

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Extract live Polymarket prediction markets and events via the Gamma API. Captures implied probabilities, YES/NO prices, bid-ask spread, 24h/7d/30d trading volume, liquidity, open interest, 1d/7d/30d price changes, CLOB token IDs, and resolution rules.

Pricing

from $2.00 / 1,000 polymarket contract extracteds

Rating

0.0

(0)

Developer

Spotless Studios

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Bookmarked

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Monthly active users

5 hours ago

Last modified

Polymarket Prediction Markets, Odds & Liquidity Scraper

Extract live prediction markets, implied probabilities (yesPrice / noPrice), order-book bid/ask spreads, 24h/7d/30d trading volume, liquidity, open interest, and 1d/7d/30d price deltas from Polymarket via the official Gamma API.

Built for quantitative traders, cross-venue arbitrage bots (Polymarket vs. Kalshi), political & macro analysts, and AI forecasting agents.

What Does This Scraper Extract?

Field	Type	Description
`marketId`	`string`	Unique Polymarket market ID
`eventId`	`string`	Parent event ID
`eventTicker`	`string`	Parent event ticker / slug
`eventTitle`	`string`	Parent event headline
`question`	`string`	Exact market resolution question
`groupItemTitle`	`string \| null`	Outcome label within multi-choice events
`outcomes`	`string[]`	Outcome labels (`["Yes", "No"]`)
`outcomePrices`	`number[]`	Outcome decimal prices (`[0.64, 0.36]`)
`yesPrice`	`number \| null`	Current YES share price (`0.00`–`1.00`)
`noPrice`	`number \| null`	Current NO share price (`0.00`–`1.00`)
`impliedProbabilityPct`	`number \| null`	Implied YES probability percentage (`0`–`100`)
`bestBid`	`number \| null`	Best bid price on CLOB orderbook
`bestAsk`	`number \| null`	Best ask price on CLOB orderbook
`lastTradePrice`	`number \| null`	Most recent execution price
`spread`	`number \| null`	Bid-ask spread in dollars
`volume24hr`	`number \| null`	24-hour trading volume in USD
`volume1wk`	`number \| null`	7-day trading volume in USD
`volume1mo`	`number \| null`	30-day trading volume in USD
`volumeTotal`	`number \| null`	Cumulative lifetime trading volume in USD
`liquidity`	`number \| null`	Active orderbook liquidity in USD
`openInterest`	`number \| null`	Event open interest in USD
`oneDayPriceChange`	`number \| null`	24h probability shift
`oneWeekPriceChange`	`number \| null`	7d probability shift
`oneMonthPriceChange`	`number \| null`	30d probability shift
`conditionId`	`string \| null`	On-chain CTF condition hash
`clobTokenIds`	`string[]`	CLOB token IDs for programmatic execution
`resolutionSource`	`string \| null`	Authoritative oracle resolution source
`marketUrl`	`string`	Direct URL on `polymarket.com`
`scrapedAt`	`string`	ISO-8601 extraction timestamp

High-Value Use Cases

Polymarket vs. Kalshi Arbitrage Detection: Pair with kalshi-markets-scraper to compare implied probabilities on identical macro, Fed, and election contracts in real time.
Momentum & Whale Alert Pipelines: Filter by minVolume24h and rank by oneDayPriceChange to spot sudden probability swings before mainstream news coverage.
LLM Grounding & Forecasting Agents: Feed live market-implied probabilities into AI research agents as calibrated priors.

Input Example

{
  "searchQuery": "fed",
  "tagSlug": "macro",
  "sortBy": "volume24hr",
  "activeOnly": true,
  "minVolume24h": 10000,
  "minLiquidity": 5000,
  "maxResults": 50
}

Output Example

{
  "marketId": "540219",
  "eventId": "19402",
  "eventTicker": "fed-interest-rates-june-2026",
  "eventTitle": "Fed Interest Rate Decision in June",
  "question": "Will the Federal Reserve cut interest rates by 25 bps in June?",
  "groupItemTitle": "25 bps decrease",
  "outcomes": ["Yes", "No"],
  "outcomePrices": [0.635, 0.365],
  "yesPrice": 0.635,
  "noPrice": 0.365,
  "impliedProbabilityPct": 63.5,
  "bestBid": 0.63,
  "bestAsk": 0.64,
  "lastTradePrice": 0.635,
  "spread": 0.01,
  "volume24hr": 482910.45,
  "volume1wk": 3120400.12,
  "volume1mo": 9840110.5,
  "volumeTotal": 14520890.0,
  "liquidity": 612400.0,
  "openInterest": 2450000.0,
  "oneDayPriceChange": 0.045,
  "oneWeekPriceChange": 0.11,
  "oneMonthPriceChange": -0.02,
  "active": true,
  "closed": false,
  "acceptingOrders": true,
  "marketUrl": "https://polymarket.com/event/fed-interest-rates-june-2026",
  "scrapedAt": "2026-10-27T14:00:00.000Z"
}

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