Trades

Aggregate trade volume/pressure metrics for a contract window

Returns aggregated volume and buy-pressure metrics for a (provider, contract_id) over a trailing window, computed from the same deduplicated trade data as /v1/trades.

Two query shapes depending on provider, because the platform cannot generically infer which side of a market is “Yes”:

Kalshi: outcome_0 is the side where outcome or token_id (case-insensitive) equals "yes", outcome_1 is "no".
All other providers: volumes are grouped by token_id and the top 2 tokens by volume are reported as outcome_0/outcome_1 — a volume ranking, not a guaranteed Yes/No mapping.

USD volume is always size * price / 100 (price is cents 0–100 for every provider). outcome_0_volume_share_pct defaults to 50.0 when both outcome volumes are zero. coverage_pct measures how much of the requested window is actually backed by data and is 0 when no trades are found in the window.

Rate-limit cost (LIGHT bucket): flat 1 unit per request.

Caching: responses are cached for 10s per replica (with singleflight coalescing) to absorb duplicate concurrent requests. Cache-Control: private, max-age=5, no ETag — this route never returns 304.

GET

trades

metrics

Aggregate trade volume/pressure metrics for a contract window

curl --request GET \
  --url https://md.kairos.trade/v1/trades/metrics \
  --header 'X-Api-Key: <api-key>' \
  --header 'X-Api-Secret: <api-key>' \
  --header 'X-Client-Id: <api-key>'

import requests

url = "https://md.kairos.trade/v1/trades/metrics"

headers = {
    "X-Client-Id": "<api-key>",
    "X-Api-Key": "<api-key>",
    "X-Api-Secret": "<api-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {
    'X-Client-Id': '<api-key>',
    'X-Api-Key': '<api-key>',
    'X-Api-Secret': '<api-key>'
  }
};

fetch('https://md.kairos.trade/v1/trades/metrics', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://md.kairos.trade/v1/trades/metrics",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-Api-Key: <api-key>",
    "X-Api-Secret: <api-key>",
    "X-Client-Id: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://md.kairos.trade/v1/trades/metrics"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-Client-Id", "<api-key>")
	req.Header.Add("X-Api-Key", "<api-key>")
	req.Header.Add("X-Api-Secret", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://md.kairos.trade/v1/trades/metrics")
  .header("X-Client-Id", "<api-key>")
  .header("X-Api-Key", "<api-key>")
  .header("X-Api-Secret", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://md.kairos.trade/v1/trades/metrics")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["X-Client-Id"] = '<api-key>'
request["X-Api-Key"] = '<api-key>'
request["X-Api-Secret"] = '<api-key>'

response = http.request(request)
puts response.read_body

{
  "metrics": {
    "volume_usd": 184032.55,
    "outcome_0_volume_usd": 121004.1,
    "outcome_1_volume_usd": 63028.45,
    "outcome_0_volume_share_pct": 65.8,
    "trade_count": 5123,
    "window_seconds": 3600,
    "coverage_pct": 97.2
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "window_seconds must be an integer in [3600, 86400]"
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "valid X-Client-Id, X-Api-Key, and X-Api-Secret headers are required"
  }
}

{
  "error": {
    "code": "ip_not_whitelisted",
    "message": "source IP not in credential whitelist"
  }
}

{
  "error": {
    "code": "rate_limited",
    "message": "rate limit exceeded"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "market_ids exceeds maximum 200"
  }
}

{
  "error": {
    "code": "rate_limiter_unavailable",
    "message": "rate limiter temporarily unavailable"
  }
}

Authorizations

X-Client-Id

string

header

required

Credential client id (kairos_ck_...). Must be sent together with X-Api-Key and X-Api-Secret.

X-Api-Key

string

header

required

64-char hex API key. Must be sent together with X-Client-Id and X-Api-Secret.

X-Api-Secret

string

header

required

64-char hex API secret. Must be sent together with X-Client-Id and X-Api-Key.

Query Parameters

provider

enum<string>

required

Venue identifier, case-insensitive. kalshi_offchain aliases kalshi; dome aliases polymarket. Whether provider resolves to Kalshi determines which aggregation query runs — see the operation description.

Available options:

kalshi,

kalshi_offchain,

polymarket,

dome,

opinion,

predictfun,

hyperliquid

contract_id

string

required

Venue-scoped contract/token identifier to compute metrics for.

window_seconds

integer

default:86400

Trailing window, in seconds, measured back from the current server time. Valid range [3600, 86400]; out-of-range or non-integer values are rejected with 400.

Required range: 3600 <= x <= 86400

Response

Aggregated metrics for the window. Present with all-zero volumes (and coverage_pct: 0) rather than a 404 when no trades exist.

metrics

object

required

Show child attributes

Aggregate trade volume/pressure metrics for a contract window

curl --request GET \
  --url https://md.kairos.trade/v1/trades/metrics \
  --header 'X-Api-Key: <api-key>' \
  --header 'X-Api-Secret: <api-key>' \
  --header 'X-Client-Id: <api-key>'

import requests

url = "https://md.kairos.trade/v1/trades/metrics"

headers = {
    "X-Client-Id": "<api-key>",
    "X-Api-Key": "<api-key>",
    "X-Api-Secret": "<api-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {
    'X-Client-Id': '<api-key>',
    'X-Api-Key': '<api-key>',
    'X-Api-Secret': '<api-key>'
  }
};

fetch('https://md.kairos.trade/v1/trades/metrics', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://md.kairos.trade/v1/trades/metrics",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-Api-Key: <api-key>",
    "X-Api-Secret: <api-key>",
    "X-Client-Id: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://md.kairos.trade/v1/trades/metrics"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-Client-Id", "<api-key>")
	req.Header.Add("X-Api-Key", "<api-key>")
	req.Header.Add("X-Api-Secret", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://md.kairos.trade/v1/trades/metrics")
  .header("X-Client-Id", "<api-key>")
  .header("X-Api-Key", "<api-key>")
  .header("X-Api-Secret", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://md.kairos.trade/v1/trades/metrics")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["X-Client-Id"] = '<api-key>'
request["X-Api-Key"] = '<api-key>'
request["X-Api-Secret"] = '<api-key>'

response = http.request(request)
puts response.read_body

{
  "metrics": {
    "volume_usd": 184032.55,
    "outcome_0_volume_usd": 121004.1,
    "outcome_1_volume_usd": 63028.45,
    "outcome_0_volume_share_pct": 65.8,
    "trade_count": 5123,
    "window_seconds": 3600,
    "coverage_pct": 97.2
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "window_seconds must be an integer in [3600, 86400]"
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "valid X-Client-Id, X-Api-Key, and X-Api-Secret headers are required"
  }
}

{
  "error": {
    "code": "ip_not_whitelisted",
    "message": "source IP not in credential whitelist"
  }
}

{
  "error": {
    "code": "rate_limited",
    "message": "rate limit exceeded"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "market_ids exceeds maximum 200"
  }
}

{
  "error": {
    "code": "rate_limiter_unavailable",
    "message": "rate limiter temporarily unavailable"
  }
}

Overview

Market Data API

Data API

Execution API

Agora Auction API

REST Guides

Market Data Guides

RPC Guides

RFQ Guides

WebSocket Guides

Krisis Guides

Aggregate trade volume/pressure metrics for a contract window

Authorizations

Query Parameters

Response