KRAKEN WEB API via Python | Bitcointalksearch.org

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legendary

Activity: 2086

Merit: 4363

Did you read the Kraken API docs? Huh

They have different POST data and header requirements to Bitstamp.

Quote from: https://www.kraken.com/features/api#general-usage

Private methods must use POST and be set up as follows:

HTTP header:

Code:

API-Key = API key
API-Sign = Message signature using HMAC-SHA512 of (URI path + SHA256(nonce + POST data)) and base64 decoded secret API key

POST data:

Code:

nonce = always increasing unsigned 64 bit integer
otp = two-factor password (if two-factor enabled, otherwise not required)

If you look through the github for the Kraken Python 2 example, you can see that the headers and POST data are implemented in code as:

Code: (https://github.com/veox/python2-krakenex/blob/master/krakenex/api.py#L100-L122)

def query_private(self, method, req={}, conn = None):
   """API queries that require a valid key/secret pair.

   Arguments:
   method -- API method name (string, no default)
   req -- additional API request parameters (default: {})
   conn -- connection object to reuse (default: None)

   """
   urlpath = '/' + self.apiversion + '/private/' + method

   req['nonce'] = int(1000*time.time())
   postdata = urllib.urlencode(req)
   message = urlpath + hashlib.sha256(str(req['nonce']) +
   postdata).digest()
   signature = hmac.new(base64.b64decode(self.secret),
   message, hashlib.sha512)
   headers = {
   'API-Key': self.key,
   'API-Sign': base64.b64encode(signature.digest())
   }

   return self._query(urlpath, req, conn, headers)

Full api.py is here: https://github.com/veox/python2-krakenex/blob/master/krakenex/api.py

DougM

full member

Activity: 173

Merit: 120

Quote from: neuri on August 03, 2020, 01:55:29 PM

Hello,

i'm trying to use the Kraken WEB API via a simple Python Script for placing Orders or getting the actual User Balance without !!! using any Kraken spec. Library.
Unfortunately i have no Chance to have success with this.

I have used Python to access other bitcoin, APIs but not Kraken unfortunately. These Kraken python examples were not helpful?
https://support.kraken.com/hc/en-us/articles/360025174872-How-to-create-the-krakenapi-py-file
https://support.kraken.com/hc/en-us/articles/360025180232-Kraken-REST-API-command-line-client
https://support.kraken.com/hc/en-us/articles/218198197-How-to-retrieve-historical-time-and-sales-trading-history-using-the-REST-API-Trades-endpoint-

neuri

newbie

Activity: 8

Merit: 2

Hello,

i'm trying to use the Kraken WEB API via a simple Python Script for placing Orders or getting the actual User Balance without !!! using any Kraken spec. Library.
Unfortunately i have no Chance to have success with this.

I'm using this method for the Bitstamp API without any Problems...

Code:

def BuyMarket(curr,amount):
client_id = xxx
api_key = xxx
api_secret = xxx

amount = round(amount, 8)

timestamp = str(int(round(time.time() * 1000)))
nonce = str(uuid.uuid4())
content_type = 'application/x-www-form-urlencoded'
payload = {'amount': amount}

if sys.version_info.major >= 3:
from urllib.parse import urlencode
else:
from urllib import urlencode

payload_string = urlencode(payload)

message = 'BITSTAMP ' + api_key + \
'POST' + \
'www.bitstamp.net' + \
'/api/v2/buy/market/' + curr +'/' + \
'' + \
content_type + \
nonce + \
timestamp + \
'v2' + \
payload_string
message = message.encode('utf-8')
signature = hmac.new(API_SECRET, msg=message, digestmod=hashlib.sha256).hexdigest()
headers = {
'X-Auth': 'BITSTAMP ' + api_key,
'X-Auth-Signature': signature,
'X-Auth-Nonce': nonce,
'X-Auth-Timestamp': timestamp,
'X-Auth-Version': 'v2',
'Content-Type': content_type
}
r = requests.post(
'https://www.bitstamp.net/api/v2/buy/market/' + curr +'/',
headers=headers,
data=payload_string
)
if not r.status_code == 200:
# raise Exception('Status code not 200')
raise Exception(r.status_code)
string_to_sign = (nonce + timestamp + r.headers.get('Content-Type')).encode('utf-8') + r.content
signature_check = hmac.new(API_SECRET, msg=string_to_sign, digestmod=hashlib.sha256).hexdigest()
if not r.headers.get('X-Server-Auth-Signature') == signature_check:
raise Exception('Signatures do not match')

log ("Place Market Buy Order - amount:" + str(amount) + " currencypair:"+curr+ " " + str(r.content) )

try:
OrderID=json.loads(r.text)["id"]
except:
OrderID="error"

return(OrderID)

Does anyone have an example Python Code who show's me how this would work for KRAKEN (Place Orders or get Balance...)

Thank a lot

Neuri

Topic: KRAKEN WEB API via Python (Read 156 times)