Polymarket prediction market data endpoints, plus API documentation and monitoring.

Resources & endpoints

Polymarket Markets

Market OHLCV

Returns OHLCV price candles for a single outcome token. Each market has two outcome tokens (e.g. Yes and No); use /v1/polymarket/markets to discover them.

Prices are in USD per share (0 to 1). Volume and fees are in USDC.

GET

https://api.pinax.network/v1/polymarket/markets/ohlc

Requires bearer token — sign in to inject your team’s key.

Required parameters

Name	Type	Description
token_idrequired query	string	e.g. 53342136288932702007624506186417846874594504126387502748453102780630218207922

Optional parameters

Name	Type	Description
interval query	Enum · 8	The interval* for which to aggregate price data (1-minute, 5-minutes, 10-minutes, 30-minutes, hourly, 4-hours, daily or weekly). *Plan restricted. 1m5m10m30m1h4h1d1w
start_time query	Datetime	UNIX timestamp in seconds or date string (e.g. "2025-01-01T00:00:00Z", "2025-01-01", ...).
end_time query	Datetime	UNIX timestamp in seconds or date string (e.g. "2025-01-01T00:00:00Z", "2025-01-01", ...).
limit query	integer	Number of items* returned in a single request. *Plan restricted.
page query	integer	Page number to fetch. Empty `data` array signifies end of results.

Response

200 OK

{
  "data": [
    {
      "timestamp": "2026-04-01 00:00:00",
      "open": 0.997,
      "high": 0.998,
      "low": 0.997,
      "close": 0.998,
      "volume": 295143.37,
      "trades": 1206,
      "buys": 498,
      "sells": 708,
      "unique_makers": 592,
      "unique_takers": 121,
      "total_fees": 0,
      "total_refunds": 0,
      "net_fees": 0,
      "fee_count": 0,
      "effective_fee_rate_gross": 0,
      "effective_fee_rate": 0,
      "market": {
        "condition_id": "0x6331a779482df72d904c3c1e12b6409ff836bc06f8c97945cba9b25ada2c605c",
        "market_slug": "will-the-portland-trail-blazers-win-the-2026-nba-finals",
        "token_id": "48262548906086150698299934962091284390063927164151224719187427455086357699251",
        "outcome_label": "No",
        "closed": false
      }
    }
  ]
}