Retrieve historical WTI and Brent daily crude oil prices

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Historical Crude Oil Price API | WTI & Brent Daily Data | ToolKK

Response Example

{
  "data": [
    {
      "day": "20260730",
      "code": "wti",
      "open_price": 76.58,
      "close_price": 77.12,
      "max": 77.56,
      "min": 75.98,
      "diff": 0.71,
      "trade_num": 238560
    }
  ]
}

Path	Type	Sample
code	string	wti
beginDate	string	20260701
endDate	string	20260730

Response Fields

The fields below are derived from example JSON for integration reference only.

Path	Type	Sample
data	array	{"day":"20260730","code":"wti","open_price":76.58,"close_price":77.12,"max":77.56,"min":75.98,"diff":0.71,"trade_num":238560}
data[]	object	{...}
data[].day	string	20260730
data[].code	string	wti
data[].open_price	number	76.58
data[].close_price	number	77.12
data[].max	number

Shell Example

curl --request POST \
  --url 'https://openapi.toolkk.com/v1/historical-international-oil-prices' \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --data '{\n  "code": "wti",\n  "beginDate": "20260701",\n  "endDate": "20260730"\n}'

Python Example

import os
import requests

url = "https://openapi.toolkk.com/v1/historical-international-oil-prices"
payload = {
  "code": "wti",
  "beginDate": "20260701",
  "endDate": "20260730"
}

headers = {
    "Content-Type": "application/json",
    "X-API-Key": os.getenv("TOOLKK_API_KEY", "YOUR_API_KEY"),
}

response = requests.request("POST", url, headers=headers, json=payload, timeout=30)
response.raise_for_status()
print(response.json())

Go Example

package main

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

func main() {
    endpoint := "https://openapi.toolkk.com/v1/historical-international-oil-prices"
    payload := []byte("{\n  \"code\": \"wti\",\n  \"beginDate\": \"20260701\",\n  \"endDate\": \"20260730\"\n}")

    req, err := http.NewRequest("POST", endpoint, bytes.NewBuffer(payload))
    if err != nil {
        panic(err)
    }

    req.Header.Set("Content-Type", "application/json")
    req.Header.Set("X-API-Key", "YOUR_API_KEY")

    resp, err := http.DefaultClient.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, err := io.ReadAll(resp.Body)
    if err != nil {
        panic(err)
    }

    fmt.Println(string(body))
}

Java Example

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

public class ToolkkExample {
    public static void main(String[] args) throws Exception {
        String payload = "{\n  \"code\": \"wti\",\n  \"beginDate\": \"20260701\",\n  \"endDate\": \"20260730\"\n}";

        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://openapi.toolkk.com/v1/historical-international-oil-prices"))
            .method("POST", HttpRequest.BodyPublishers.ofString(payload))
            .header("Content-Type", "application/json")
            .header("X-API-Key", "YOUR_API_KEY")
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

PHP Example

<?php

$endpoint = 'https://openapi.toolkk.com/v1/historical-international-oil-prices';
$payload = "{\n  \"code\": \"wti\",\n  \"beginDate\": \"20260701\",\n  \"endDate\": \"20260730\"\n}";

$ch = curl_init($endpoint);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => [
        'Content-Type: application/json',
        'X-API-Key: YOUR_API_KEY',
    ],
    CURLOPT_POSTFIELDS => $payload,
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new RuntimeException(curl_error($ch));
}

curl_close($ch);
echo $response;

Historical International Crude Oil Prices

Documentation

Integration Examples

Request Example