curl --request GET \
  --url https://astreus.ai/api/v1/commodities/spreads \
  --header 'X-API-KEY: <api-key>'

import requests

url = "https://astreus.ai/api/v1/commodities/spreads"

headers = {"X-API-KEY": "<api-key>"}

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

print(response.text)

const options = {method: 'GET', headers: {'X-API-KEY': '<api-key>'}};

fetch('https://astreus.ai/api/v1/commodities/spreads', 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://astreus.ai/api/v1/commodities/spreads",
  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>"
  ],
]);

$response = curl_exec($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://astreus.ai/api/v1/commodities/spreads"

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

	req.Header.Add("X-API-KEY", "<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://astreus.ai/api/v1/commodities/spreads")
  .header("X-API-KEY", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://astreus.ai/api/v1/commodities/spreads")

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

request = Net::HTTP::Get.new(url)
request["X-API-KEY"] = '<api-key>'

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

{
  "spreads": [
    {
      "key": "BRENT_WTI",
      "name": "Brent–WTI",
      "kind": "difference",
      "unit": "$/bbl",
      "align": "daily",
      "board": "oil",
      "description": "Brent minus WTI spot. The price of moving US crude to the world market: it widens when US pipelines or export docks are constrained.",
      "legs": [
        "BRENT",
        "WTI"
      ],
      "last": 19.72999999999999,
      "last_date": "2026-10-27",
      "prev": 22.870000000000005,
      "prev_date": "2026-10-26",
      "high_52w": 37.61999999999999,
      "low_52w": -2.450000000000003,
      "history": [
        {
          "d": "2026-10-26",
          "v": 22.870000000000005
        },
        {
          "d": "2026-10-27",
          "v": 19.72999999999999
        }
      ],
      "window": {
        "from": null,
        "to": null,
        "limit": 2,
        "total": 1259,
        "returned": 2,
        "olderTo": "2026-10-23"
      }
    },
    {
      "key": "BRENT_DUBAI",
      "name": "Brent–Dubai",
      "kind": "difference",
      "unit": "$/bbl",
      "align": "monthly",
      "board": "oil",
      "description": "Light sweet against medium sour crude (monthly). Positive and wide when sour barrels are plentiful — typically when OPEC+ raises output.",
      "legs": [
        "BRENT",
        "DUBAI"
      ],
      "last": 20.85909090909091,
      "last_date": "2026-09-01",
      "prev": 11.37599999999999,
      "prev_date": "2026-08-01",
      "high_52w": 24.58749999999999,
      "low_52w": -0.003000000000007219,
      "history": [
        {
          "d": "2026-08-01",
          "v": 11.37599999999999
        },
        {
          "d": "2026-09-01",
          "v": 20.85909090909091
        }
      ],
      "attribution": "Source: World Bank Commodity Price Data (The Pink Sheet), CC BY 4.0",
      "window": {
        "from": null,
        "to": null,
        "limit": 2,
        "total": 60,
        "returned": 2,
        "olderTo": "2026-07-01"
      }
    }
  ]
}

{
  "error": "<string>",
  "code": "unknown_parameter",
  "param": "<string>",
  "allowed": [
    "<string>"
  ]
}

{
  "error": "<string>",
  "code": "unknown_parameter",
  "param": "<string>",
  "allowed": [
    "<string>"
  ]
}

{
  "error": "<string>",
  "code": "unknown_parameter",
  "param": "<string>",
  "allowed": [
    "<string>"
  ]
}

{
  "error": "<string>",
  "code": "unknown_parameter",
  "param": "<string>",
  "allowed": [
    "<string>"
  ]
}