Kraken REST API

api.kraken.com · Finance

Finance API Key Free Tier Cryptocurrency Exchange Trading

Kraken cryptocurrency exchange API — real-time market data (ticker, order book, trades, OHLC), account management, and trading. Public market data requires no API key.

Authentication

API Key authentication Public endpoints (market data) require no authentication. Private endpoints (trading, account) require API key and secret from your Kraken account.

Sample Requests

GET Get ticker

Get current BTC/USD ticker data.

https://api.kraken.com/0/public/Ticker?pair=XBTUSD

Hover any highlighted part to learn what it does

curl -X GET "https://api.kraken.com/0/public/Ticker?pair=XBTUSD"

import requests
params = {
    "pair": "XBTUSD"
}
response = requests.get(
    "https://api.kraken.com/0/public/Ticker",
    params=params,
)
print(response.json())

const url = new URL('https://api.kraken.com/0/public/Ticker');
url.searchParams.set('pair', 'XBTUSD');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	baseURL, _ := url.Parse("https://api.kraken.com/0/public/Ticker")
	q := baseURL.Query()
	q.Set("pair", "XBTUSD")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.kraken.com/0/public/Ticker")
uri.query = URI.encode_www_form({
  "pair" => "XBTUSD"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.kraken.com/0/public/Ticker?" . http_build_query([
    "pair" => "XBTUSD"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get OHLC data

Get hourly OHLC candles for ETH/USD.

https://api.kraken.com/0/public/OHLC?pair=ETHUSD&interval=60

Hover any highlighted part to learn what it does

curl -X GET "https://api.kraken.com/0/public/OHLC?pair=ETHUSD&interval=60"

import requests
params = {
    "pair": "ETHUSD",
    "interval": "60"
}
response = requests.get(
    "https://api.kraken.com/0/public/OHLC",
    params=params,
)
print(response.json())

const url = new URL('https://api.kraken.com/0/public/OHLC');
url.searchParams.set('pair', 'ETHUSD');
url.searchParams.set('interval', '60');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	baseURL, _ := url.Parse("https://api.kraken.com/0/public/OHLC")
	q := baseURL.Query()
	q.Set("pair", "ETHUSD")
	q.Set("interval", "60")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.kraken.com/0/public/OHLC")
uri.query = URI.encode_www_form({
  "pair" => "ETHUSD",
  "interval" => "60"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.kraken.com/0/public/OHLC?" . http_build_query([
    "pair" => "ETHUSD",
    "interval" => "60"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

No key for public endpoints
Try GET https://api.kraken.com/0/public/Ticker?pair=XBTUSD
Get all pairs: GET /0/public/AssetPairs
For trading/account endpoints create API keys at kraken.com/u/security/api

What can you build with Kraken REST API?

Kraken REST API is a Finance API. Developers commonly use finance APIs for:

processing payments and handling transactions
building subscription and billing systems
automating invoicing and financial reporting
fraud detection and risk scoring
connecting to banking and accounting software

API Key authentication. You'll receive a key after signing up. Send it with every request — in a header or query parameter. Keep it out of client-side code and never commit it to version control. Kraken REST API is free to use up to a usage limit, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗