Market Candles - PolyNode

Build OHLCV candles from V3 Polymarket trade fills. Candles are bucketed by trade timestamp and include price, volume, VWAP, trade count, and first/last fill markers for each bucket. Use this endpoint for V3 charting when you already have an outcome token ID, condition ID, or market slug.

Endpoints

GET /v3/markets/{token_id}/candles
GET /v3/markets/condition/{condition_id}/candles
GET /v3/markets/slug/{slug}/candles

The token route returns one candle series for one outcome token. The condition and slug routes resolve the market’s outcome tokens and return a series array, one entry per outcome token. Pass token_id on the condition or slug route to return only one outcome.

Authentication

curl "https://api.polynode.dev/v3/markets/{token_id}/candles?resolution=5m&limit=120" \
  -H "x-api-key: $POLYNODE_API_KEY"

Query parameters

Parameter	Type	Default	Description
`resolution`	string	`1h`	Bucket size. One of `1m`, `5m`, `15m`, `1h`, `4h`, `1d`.
`limit`	integer	`120`	Maximum number of candle buckets in the requested window. Clamped by resolution.
`direction`	string	`before`	`before` returns the window ending at `anchor_ts` or now. `after` returns the window starting at `anchor_ts`.
`anchor_ts`	integer	now	Unix timestamp in seconds. Required when `direction=after`.
`start`	integer	—	Explicit window start timestamp in seconds. Alias: `start_time`, `after`.
`end`	integer	—	Explicit window end timestamp in seconds. Alias: `end_time`, `before`.
`order`	string	`asc`	Candle order. Use `desc` to return newest bucket first.
`gap_fill`	boolean	`false`	When true, empty buckets are filled with flat carry-forward candles after a prior price exists.
`token_id`	string	—	Condition/slug routes only. Filters the resolved market to one outcome token.

Timestamp parameters are Unix seconds, not milliseconds. If you pass an explicit range, the range must fit inside the resolution’s bucket limit.

Bucket limits

limit is a candle-bucket count, not a trade count.

Resolution	Max candles per request
`1m`	120
`5m`	180
`15m`	240
`1h`	300
`4h`	360
`1d`	500

For more history, walk backward with pagination.older_end_ts:

# First page: latest 120 one-minute buckets
curl "https://api.polynode.dev/v3/markets/$TOKEN_ID/candles?resolution=1m&limit=120" \
  -H "x-api-key: $POLYNODE_API_KEY"

# Older page: use pagination.older_end_ts from the previous response
curl "https://api.polynode.dev/v3/markets/$TOKEN_ID/candles?resolution=1m&limit=120&anchor_ts=$OLDER_END_TS" \
  -H "x-api-key: $POLYNODE_API_KEY"

Token route response

{
  "token_id": "7936379438884929999943146941289093559746194477224187754527972073168717543990",
  "resolution": "1m",
  "count": 1,
  "candles": [
    {
      "time": 1781659920,
      "time_unix": 1781659920,
      "time_ms": 1781659920000,
      "open": 0.525,
      "high": 0.535,
      "low": 0.515,
      "close": 0.53,
      "volume": 233.135659,
      "volume_usd": 233.135659,
      "volume_shares": 444.019955,
      "volume_buy": 121.504,
      "volume_sell": 111.631659,
      "trades": 13,
      "vwap": 0.52504954,
      "first_trade_ts": 1781659922,
      "last_trade_ts": 1781659978,
      "first_block": 88620000,
      "last_block": 88620030,
      "first_log_index": 320,
      "last_log_index": 881,
      "gap_filled": false
    }
  ],
  "question": "Spread: Argentina (-1.5)",
  "slug": "fifwc-arg-alg-2026-06-16-spread-home-1pt5",
  "outcome": "Argentina",
  "image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/soccer ball-bba4025f77.png",
  "condition_id": "0x1eb724a708f3720c2b7ef63d7ffc7483ecc14deed6df2e7e9dc1dfa724a98bd6",
  "outcome_index": 0,
  "window": {
    "start_ts": 1781652840,
    "end_ts": 1781659981,
    "first_bucket": 1781652840,
    "last_bucket": 1781659980,
    "duration_seconds": 7142,
    "bucket_count": 120,
    "resolution_seconds": 60,
    "older_end_ts": 1781652839,
    "newer_start_ts": 1781660040,
    "has_older": true,
    "has_newer": true
  },
  "pagination": {
    "limit": 120,
    "max_limit": 120,
    "direction": "before",
    "order": "asc",
    "older_end_ts": 1781652839,
    "newer_start_ts": 1781660040,
    "has_more": true,
    "has_older": true,
    "has_newer": true
  },
  "gap_fill": false,
  "elapsed_ms": 27
}

Sparse markets can return count: 0 and candles: [] for a window with no trades. That is a valid empty chart window, not a missing market.

Condition and slug responses

curl "https://api.polynode.dev/v3/markets/condition/$CONDITION_ID/candles?resolution=5m&limit=2" \
  -H "x-api-key: $POLYNODE_API_KEY"

{
  "condition_id": "0x1eb724a708f3720c2b7ef63d7ffc7483ecc14deed6df2e7e9dc1dfa724a98bd6",
  "resolution": "5m",
  "series_count": 2,
  "series": [
    {
      "token_id": "7936379438884929999943146941289093559746194477224187754527972073168717543990",
      "resolution": "5m",
      "count": 0,
      "candles": [],
      "question": "Spread: Argentina (-1.5)",
      "slug": "fifwc-arg-alg-2026-06-16-spread-home-1pt5",
      "outcome": "Argentina",
      "image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/soccer ball-bba4025f77.png",
      "condition_id": "0x1eb724a708f3720c2b7ef63d7ffc7483ecc14deed6df2e7e9dc1dfa724a98bd6",
      "outcome_index": 0
    }
  ],
  "window": {
    "start_ts": 1781668800,
    "end_ts": 1781669399,
    "first_bucket": 1781668800,
    "last_bucket": 1781669100,
    "duration_seconds": 600,
    "bucket_count": 2,
    "resolution_seconds": 300,
    "older_end_ts": 1781668799,
    "newer_start_ts": 1781669400,
    "has_older": true,
    "has_newer": true
  },
  "pagination": {
    "limit": 2,
    "max_limit": 180,
    "direction": "before",
    "order": "asc",
    "older_end_ts": 1781668799,
    "newer_start_ts": 1781669400,
    "has_more": true,
    "has_older": true,
    "has_newer": true
  },
  "gap_fill": false,
  "elapsed_ms": 205
}

For a single outcome from a condition or slug:

curl "https://api.polynode.dev/v3/markets/condition/$CONDITION_ID/candles?token_id=$TOKEN_ID&resolution=15m&limit=96" \
  -H "x-api-key: $POLYNODE_API_KEY"

If a condition or slug resolves to more than 50 outcome tokens, pass token_id to request one outcome series.

Candle fields

Field	Type	Description
`time`	integer	Candle bucket start time in Unix seconds.
`time_unix`	integer	Same as `time`.
`time_ms`	integer	Candle bucket start time in Unix milliseconds for charting libraries.
`open`	number	First trade price in the bucket.
`high`	number	Highest trade price in the bucket.
`low`	number	Lowest trade price in the bucket.
`close`	number	Last trade price in the bucket.
`volume`	number	Total USD volume in the bucket. Alias of `volume_usd`.
`volume_usd`	number	Total USD volume in the bucket.
`volume_shares`	number	Total outcome-share volume in the bucket.
`volume_buy`	number	USD volume where the fill bought this outcome token.
`volume_sell`	number	USD volume where the fill sold this outcome token.
`trades`	integer	Number of fills in the bucket.
`vwap`	number	Volume-weighted average price.
`first_trade_ts`	integer or null	Timestamp of the first fill in the bucket.
`last_trade_ts`	integer or null	Timestamp of the last fill in the bucket.
`first_block`	integer or null	Polygon block of the first fill in the bucket.
`last_block`	integer or null	Polygon block of the last fill in the bucket.
`first_log_index`	integer or null	Log index of the first fill in the bucket.
`last_log_index`	integer or null	Log index of the last fill in the bucket.
`gap_filled`	boolean	`true` only for carry-forward buckets created by `gap_fill=true`.

Errors and guards

Status	Condition
`400`	Invalid `resolution`, invalid `direction`, invalid `order`, millisecond timestamp, range larger than the resolution limit, or `token_id` that does not belong to a condition/slug route.
`404`	Unknown token, condition, or slug.

Unknown token IDs return:

{
  "error": "market token not found",
  "token_id": "0",
  "hint": "candles are available for Polymarket outcome token IDs, not collateral or arbitrary asset IDs"
}

​Endpoints

​Authentication

​Query parameters

​Bucket limits

​Token route response

​Condition and slug responses

​Candle fields

​Errors and guards