Polymarket Scraper

Scrape Polymarket prediction markets, events, order books, trades, and tags via public APIs. No auth, no browser, no captchas.

Features

• Markets — Fetch prediction markets with prices, volume, liquidity, outcomes, and resolution status
• Events — Fetch event groupings (multiple markets under one question)
• Order Books — Full bid/ask order book data for any market
• Trade History — Recent trades with prices, sizes, and trader info
• Tags — Discover all available categories for filtering

All data comes from Polymarket's public Gamma, CLOB, and Data APIs. No authentication required.

Input

Field	Type	Required	Description
mode	string	Yes	markets, events, orderbook, trades, or tags
queries	array	No	Market/event slugs (leave empty to bulk-fetch all)
limit	integer	No	Max results (default: 100)
closed	boolean	No	Fetch closed/resolved markets instead of active (default: false)
order	string	No	Sort field: volume24hr, volume, liquidity, startDate, endDate, createdAt
ascending	boolean	No	Sort ascending (default: false = highest volume first)
includeOrderBook	boolean	No	Fetch full order book for each market (default: false)
tagId	integer	No	Filter by tag/category ID

Output

Markets

Each item: id, question, slug, condition_id, description, outcomes, outcome_prices, best_bid, best_ask, last_trade_price, price_change_1h/1d/1w/1mo, volume, volume_24hr, liquidity, active, closed, start_date, end_date, category, order_books (optional)

Events

Each item: id, title, slug, description, category, volume, volume_24hr, liquidity, open_interest, market_count, market_ids, tags, start_date, end_date

Order Books

Each item: market_id, question, slug, order_books (array of {token_id, outcome, bids, asks, spread, mid_price})

Trades

Each item: proxy_wallet, side, size, price, timestamp, title, slug, outcome, outcome_index, trader_name, transaction_hash

Tags

Each item: id, label, slug

Use Cases

• Track prediction market prices for quantitative models
• Monitor volume and liquidity trends across markets
• Archive resolved markets for historical analysis
• Build dashboards for political, sports, and crypto prediction markets
• Extract order book depth for market making strategies
• Track trader activity and positions

Pricing

• $3.00 per 1,000 results
• $0.01 per actor start

Examples

Get top 100 active markets by 24h volume

{"mode": "markets", "limit": 100}

Get specific markets by slug with order books

{"mode": "markets", "queries": ["fed-decision-in-october", "will-bitcoin-hit-100k"], "includeOrderBook": true}

Get resolved markets sorted by total volume

{"mode": "markets", "closed": true, "order": "volume", "limit": 500}

Get all active events

{"mode": "events", "limit": 500}

Get order book for a specific market

{"mode": "orderbook", "queries": ["fed-decision-in-october"]}

Get recent trades for a market

{"mode": "trades", "queries": ["fed-decision-in-october"], "limit": 50}

Discover all categories/tags

{"mode": "tags"}