Market OHLCV

Data Freshness & Historical Coverage

For data freshness and historical coverage, see Data Coverage by Chain; this endpoint follows it except where noted below.

• Covers the Polymarket prediction-markets dataset (trade and price history from November 2022), not per-chain history — see the Prediction Markets note on the coverage page.

• Serves a price feed in fixed one-hour intervals, where the most recent candle is the current, still-forming interval that keeps updating until the hour closes.

Get Prediction Market OHLCV Candles

post

Get 1-hour OHLCV (Open, High, Low, Close, Volume) candles for a Polymarket prediction market. Candles are computed from on-chain OrderFilled events on Polygon.

What it helps to answer:

1. What is the price history of a prediction market outcome?

2. How has trading volume changed over time?

3. What were the high and low prices in each time period?

Authorizations

ApiKeyAuth

apikeystringRequired

API key for authentication

Body

application/json

Request for OHLCV endpoint.

market_idstring · min: 1 · max: 100Required

Polymarket market ID

Example: 654412

dateany ofOptional

Date range filter (ISO 8601 date-time)

Example: {"from":"2024-01-01T00:00:00Z","to":"2024-12-31T23:59:59Z"}

order_byany ofOptional

Sort order

Example: [{"direction":"DESC","field":"period_start"}]

sortany ofOptionalDeprecated

Deprecated: use 'order_by' instead.

Responses

200

OHLCV candle data

application/json

400

Bad Request

application/json

401

Unauthorized

application/json

402

Payment Required

application/json

403

Forbidden

application/json

404

Not Found

application/json

422

Unprocessable Content

application/json

429

Too Many Requests

application/json

500

Internal Server Error

application/json

502

Bad Gateway

application/json

503

Service Unavailable

application/json

504

Gateway Timeout

application/json

post/api/v1/prediction-market/ohlcv

HTTPcURLJavaScriptPython

POST /api/v1/prediction-market/ohlcv HTTP/1.1
Host: api.nansen.ai
apikey: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 184

{
  "market_id": "654412",
  "pagination": {
    "page": 1,
    "per_page": 10
  },
  "date": {
    "from": "2024-01-01T00:00:00Z",
    "to": "2024-12-31T23:59:59Z"
  },
  "order_by": [
    {
      "direction": "DESC",
      "field": "period_start"
    }
  ]
}

{
  "pagination": {
    "page": 1,
    "per_page": 10,
    "is_last_page": true
  },
  "data": [
    {
      "market_id": "654412",
      "token_id": "71321045679252212",
      "side": "Yes",
      "outcome_index": 1,
      "period_start": "2024-11-01T00:00:00",
      "open": 0.5,
      "high": 0.55,
      "low": 0.48,
      "close": 0.53,
      "volume_usd": 12500,
      "trade_count": 150,
      "unique_traders": 25
    }
  ]
}