L2

Each row represents a Polymarket order book or market-status event.

Data type: l2 · Download sample ↗

Schema

Field	Type	Description
market_slug	string	Polymarket market_slug.
timestamp	timestamp[us]	Polymarket event timestamp.
local_timestamp	timestamp[us]	PMData receive timestamp.
event_type	string	book, price_change, market_resolved, or tick_size_change.
ask_prices	list<float> | null	Ask prices; index 0 is the best ask. Source: book event.
ask_sizes	list<float> | null	Ask size at each price in ask_prices. Source: book event.
bid_prices	list<float> | null	Bid prices; index 0 is the best bid. Source: book event.
bid_sizes	list<float> | null	Bid size at each price in bid_prices. Source: book event.
best_ask	float | null	Best ask. Source: price_change event.
best_bid	float | null	Best bid. Source: price_change event.
pc_price	float | null	Updated price level. Source: price_change event.
pc_size	float | null	New aggregate size at pc_price. Zero removes the level. Source: price_change event.
pc_side	string | null	Updated side: BUY or SELL. Source: price_change event.
new_tick_size	float | null	New minimum tick size. Source: tick_size_change event.
winning_outcome	string | null	Winning outcome. Source: market_resolved event.

Event types

• book — Complete order book snapshots sent on subscription and after trades that change the book.
• price_change — Price-level updates caused by new or cancelled orders.
• tick_size_change — Changes to a market's minimum tick size.
• market_resolved — Market resolution events containing the winning outcome.

Example data

book row:

market_slug	event_type	ask_prices	ask_sizes	bid_prices	bid_sizes
btc-updown-5m-1784332800	book	[0.51, 0.52, …, 0.99]	[619.93, 162.67, …, 43595.86]	[0.50, 0.49, …, 0.01]	[393.44, 188.75, …, 43546.02]

price_change row:

market_slug	event_type	pc_price	pc_size	pc_side	best_ask	best_bid
btc-updown-5m-1784332800	price_change	0.11	726	BUY	0.51	0.50