Get Kalshi price history

Try in Playground

Get price candles for one Kalshi market, or for every market of an event in one call: traded price open, high, low, close and mean, Yes bid and ask, volume and open interest per minute, hour or day. Periods without trades carry only the previous price.

GET/v1/kalshi/price-historyx-api-key

Headers

Get your API key

x-api-keystringrequiredheader

Your ScrapeAtlas customer key. Create one on /account/ and set SCRAPEATLAS_API_KEY.

Query parameters

tickerstringquery

Market ticker. Provide ticker or eventTicker.

ExampleKXWC-30-ESP

eventTickerstringquery

Event ticker: returns aligned candles for each market of the event.

intervalenumquery

1m, 1h (default) or 1d.

one of: 1m, 1h, 1d

Example1d

sincenumber | stringquery

Start time, ISO 8601 or Unix seconds. Defaults to 6 hours (1m), 7 days (1h) or 180 days (1d) before until.

untilnumber | stringquery

End time, ISO 8601 or Unix seconds; defaults to now. A market request covers at most 5,000 periods, an event request at most 500. Kalshi returns up to 5,000 candles per event read across all its markets; a longer event window keeps its latest periods and reports window_truncated.

Response fields

requestIdstring

Request correlation UUID.

Upstream requests, decoded response bytes and elapsed milliseconds.

accounting.upstreamRequestsinteger

Always included.

≥ 0

accounting.responseBytesinteger

Always included.

≥ 0

accounting.durationMsnumber

Always included.

≥ 0

successboolean

True when usable data is returned; inspect status and coverage for omissions.

statusenum

success, partial, failed or challenged. HTTP 200 can be partial.

one of: success, partial

sourceUrlstring

Kalshi public API URL the data was read from.

absolute HTTPS URL

fetchedAtstring

UTC retrieval time.

order is oldest_first; window echoes since/until, or gives the period actually returned when an event window was shortened. complete is false with window_truncated or candle_limit when an event response was shortened.

coverage.sourcestring

Always included.

coverage.completeboolean

Always included.

coverage.warningsstring[]

Always included.

coverage.orderenum

Always included.

one of: newest_first, oldest_first, ranked, relevance, source_order

Optional.

coverage.window.sincestringoptional

Optional.

coverage.window.untilstringoptional

Optional.

intervalenum

1m, 1h (default) or 1d.

one of: 1m, 1h, 1d

tickerstringoptional

Market ticker. Provide ticker or eventTicker.

eventTickerstringoptional

Event ticker: returns aligned candles for each market of the event.

archivedboolean

true when the market was read from Kalshi’s archive of settled markets.

adjusted_end_tsintegeroptional

For an event: the end time Kalshi applied, Unix seconds.

One entry per market: market_ticker and candlesticks, oldest first.

up to 1000 items

markets.market_tickerstring

Always included.

Candles: end_period_ts (Unix seconds), volume_fp, open_interest_fp, price (open/high/low/close/mean_dollars when traded, previous_dollars), yes_bid and yes_ask (open/high/low/close_dollars). Archived candles are returned in the same shape.

up to 5000 items

markets.candlesticks.end_period_tsinteger

Always included.

markets.candlesticks.open_interest_fpstringoptional

Optional.

markets.candlesticks.volume_fpstringoptional

Optional.

Always included.

markets.candlesticks.price.open_dollarsstringoptional

Optional.

markets.candlesticks.price.high_dollarsstringoptional

Optional.

markets.candlesticks.price.low_dollarsstringoptional

Optional.

markets.candlesticks.price.close_dollarsstringoptional

Optional.

markets.candlesticks.price.mean_dollarsstringoptional

Optional.

markets.candlesticks.price.previous_dollarsstringoptional

Optional.

Always included.

markets.candlesticks.yes_bid.open_dollarsstringoptional

Optional.

markets.candlesticks.yes_bid.high_dollarsstringoptional

Optional.

markets.candlesticks.yes_bid.low_dollarsstringoptional

Optional.

markets.candlesticks.yes_bid.close_dollarsstringoptional

Optional.

Always included.

markets.candlesticks.yes_ask.open_dollarsstringoptional

Optional.

markets.candlesticks.yes_ask.high_dollarsstringoptional

Optional.

markets.candlesticks.yes_ask.low_dollarsstringoptional

Optional.

markets.candlesticks.yes_ask.close_dollarsstringoptional

Optional.

HTTP 200 returns the success variant. Check status: partial means usable data with warnings, and failed or challenged requests carry a failure object described in Errors & responses.

Error codes

HTTP	failure.code	Meaning
200	`partial`	Usable data with market_limit, metadata_unavailable, candle_limit, window_truncated, comment_limit or metrics_unavailable warnings.
400	`invalid_request`	Missing, duplicate, malformed or unsupported parameters, a link outside kalshi.com/markets, a price-history window above its period limit, or parameters Kalshi rejected.
401	`unauthorized`	Missing or invalid worker API key.
404	`not_found`	Unknown market, event, series, post or trader.
429	`upstream_rate_limited`	Kalshi rate limited the request.
502	`upstream_challenged`	Kalshi refused the public request.
502	`unsupported_page`	Malformed, mismatched or non-JSON source data.
502	`response_too_large` `payload_too_complex`	Response exceeded byte or parsing limits.
502	`unsafe_redirect` `request_limit` `upstream_error`	Bounded source retrieval could not complete.
503	`busy`	All worker slots and the waiting queue are occupied.
504	`timeout`	Total request deadline expired.

Code example

curl "https://api.scrapeatlas.com/v1/kalshi/price-history?ticker=KXWC-30-ESP&interval=1d" \
  -H "x-api-key: YOUR_API_KEY"

const response = await fetch(
  "https://api.scrapeatlas.com/v1/kalshi/price-history?ticker=KXWC-30-ESP&interval=1d",
  {
    headers: {
      "x-api-key": "YOUR_API_KEY"
    }
  }
);

const data = await response.json();
console.log(data.status, data);

type Result = {
  status: "success" | "partial" | "failed" | "challenged";
  requestId: string;
  [field: string]: unknown;
};

const response = await fetch(
  "https://api.scrapeatlas.com/v1/kalshi/price-history?ticker=KXWC-30-ESP&interval=1d",
  {
    headers: {
      "x-api-key": process.env.SCRAPEATLAS_API_KEY!
    }
  }
);

const data = (await response.json()) as Result;
if (data.status === "failed" || data.status === "challenged") {
  throw new Error(`Kalshi request failed: ${data.requestId}`);
}
console.log(data);

import requests

response = requests.get(
    "https://api.scrapeatlas.com/v1/kalshi/price-history",
    headers={"x-api-key": "YOUR_API_KEY"},
    params={
        "ticker": "KXWC-30-ESP",
        "interval": "1d"
    },
    timeout=60,
)
data = response.json()
print(data["status"], data)

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

func main() {
	req, _ := http.NewRequest("GET", "https://api.scrapeatlas.com/v1/kalshi/price-history?ticker=KXWC-30-ESP&interval=1d", nil)
	req.Header.Set("x-api-key", "YOUR_API_KEY")
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	var data map[string]interface{}
	json.NewDecoder(resp.Body).Decode(&data)
	fmt.Println(data["status"], data)
}

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        var client = HttpClient.newHttpClient();
        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.scrapeatlas.com/v1/kalshi/price-history?ticker=KXWC-30-ESP&interval=1d"))
            .GET()
            .header("x-api-key", "YOUR_API_KEY")
            .build();
        var response = client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Use your sa_live_… customer key at https://api.scrapeatlas.com.

Responses

Successful result. Synthetic example validated against the runtime contract.

{
  "success": true,
  "status": "success",
  "requestId": "00000000-0000-4000-8000-000000000001",
  "sourceUrl": "https://api.elections.kalshi.com/trade-api/v2/markets/candlesticks?market_tickers=KXSYNTH-30-AAA&start_ts=1790913600&end_ts=1791086400&period_interval=1440",
  "fetchedAt": "2026-10-13T00:00:00.000Z",
  "coverage": {
    "source": "public_api",
    "complete": true,
    "warnings": [],
    "order": "oldest_first",
    "window": {
      "since": "2026-10-01T00:00:00.000Z"
    }
  },
  "accounting": {
    "upstreamRequests": 1,
    "responseBytes": 1900,
    "durationMs": 340
  },
  "interval": "1d",
  "ticker": "KXSYNTH-30-AAA",
  "archived": false,
  "markets": [
    {
      "market_ticker": "KXSYNTH-30-AAA",
      "candlesticks": [
        {
          "end_period_ts": 1791000000,
          "open_interest_fp": "46866.74",
          "volume_fp": "449.96",
          "price": {
            "open_dollars": "0.1240",
            "high_dollars": "0.1440",
            "low_dollars": "0.1240",
            "close_dollars": "0.1430",
            "mean_dollars": "0.1394",
            "previous_dollars": "0.1240"
          },
          "yes_bid": {
            "open_dollars": "0.1230",
            "high_dollars": "0.1420",
            "low_dollars": "0.1230",
            "close_dollars": "0.1420"
          },
          "yes_ask": {
            "open_dollars": "0.1400",
            "high_dollars": "0.1440",
            "low_dollars": "0.1400",
            "close_dollars": "0.1420"
          }
        },
        {
          "end_period_ts": 1791086400,
          "open_interest_fp": "46866.74",
          "volume_fp": "0.00",
          "price": {
            "previous_dollars": "0.1430"
          },
          "yes_bid": {
            "open_dollars": "0.1420",
            "high_dollars": "0.1420",
            "low_dollars": "0.1420",
            "close_dollars": "0.1420"
          },
          "yes_ask": {
            "open_dollars": "0.1440",
            "high_dollars": "0.1440",
            "low_dollars": "0.1440",
            "close_dollars": "0.1440"
          }
        }
      ]
    }
  ]
}

Missing, duplicate, malformed or unsupported parameters, a link outside kalshi.com/markets, a price-history window above its period limit, or parameters Kalshi rejected.

{
  "requestId": "9d2f1c0a-6b1e-4c7d-9a8e-2f3b4c5d6e7f",
  "accounting": {
    "upstreamRequests": 0,
    "responseBytes": 0,
    "durationMs": 0
  },
  "success": false,
  "status": "failed",
  "failure": {
    "code": "invalid_request",
    "message": "Invalid request: missing, duplicate, unsupported or malformed parameters."
  }
}