the API
https://en.bitcoin.it/wiki/MtGox/API

here is the python to plug mtgox

from urllib import urlencode
import urllib2
import time
from hashlib import sha512
from hmac import HMAC
import base64
import json
def get_nonce():
return int(time.time()*100000)

def sign_data(secret, data):
return base64.b64encode(str(HMAC(secret, data, sha512).digest()))

class requester:
def __init__(self, auth_key, auth_secret):
self.auth_key = auth_key
self.auth_secret = base64.b64decode(auth_secret)

def build_query(self, req={}):
req["nonce"] = get_nonce()
post_data = urlencode(req)
headers = {}
headers["User-Agent"] = "GoxApi"
headers["Rest-Key"] = self.auth_key
headers["Rest-Sign"] = sign_data(self.auth_secret, post_data)
return (post_data, headers)

def perform(self, path, args):
data, headers = self.build_query(args)
req = urllib2.Request("https://mtgox.com/api/0/"+path, data, headers)
res = urllib2.urlopen(req, data)
return json.load(res)