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GET
/
v1
/
arbitrage
Get arbitrage opportunities
curl --request GET \
  --url https://api.rekko.ai/v1/arbitrage
import requests

url = "https://api.rekko.ai/v1/arbitrage"

response = requests.get(url)

print(response.text)
const options = {method: 'GET'};

fetch('https://api.rekko.ai/v1/arbitrage', 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://api.rekko.ai/v1/arbitrage",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($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://api.rekko.ai/v1/arbitrage"

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

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

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

fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.get("https://api.rekko.ai/v1/arbitrage")
.asString();
require 'uri'
require 'net/http'

url = URI("https://api.rekko.ai/v1/arbitrage")

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

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body
{
  "count": 1,
  "opportunities": [
    {
      "cheaper_on": "kalshi",
      "event": "Fed rate cut March 2026",
      "kalshi": {
        "market_id": "KXFED-26MAR19",
        "url": "https://kalshi.com/markets/kxfed/kxfed-26mar19",
        "yes_price": 0.62
      },
      "match_confidence": 0.92,
      "polymarket": {
        "market_id": "0x1234abcd",
        "url": "https://polymarket.com/event/fed-rate-cut-march-2026",
        "yes_price": 0.68
      },
      "scanned_at": "2026-03-21T14:30:00Z",
      "score": 78,
      "spread": 0.06,
      "spread_pct": 6
    }
  ],
  "scanned_at": "2026-03-21T14:30:00Z"
}
{
"detail": [
{
"loc": [
"<string>"
],
"msg": "<string>",
"type": "<string>",
"input": "<unknown>",
"ctx": {}
}
]
}

Query Parameters

min_spread
number
default:0.02

Minimum spread filter

Required range: 0 <= x <= 0.5
expand
string
default:""

Comma-separated expansions

Response

Successful Response

Cross-platform arbitrage scan results.

scanned_at
string<date-time>
required

Exact scan timestamp

count
integer
default:0

Number of opportunities

opportunities
ArbitrageOpportunity · object[]

Opportunities ranked by score (highest first)