Using the python coinbase API– The functions– get_buy_price
, get_sell_price
, get_spot_price
, get_historical_data
, etc… all seem to return bitcoin prices only. Is there a way of querying Ethereum prices?
It would seem that currency_pair = 'BTC-USD'
could be changed to something akin to currency_pair = 'ETH-USD'
although this has no effect.
I would expect that the API simply doesn’t support this, except that the official documentation explicitly states:
Get the total price to buy one bitcoin or ether
I can work around this somewhat by using the quote='true'
flag in the buy/sell request. This however only works moving forward, I would like historical data.
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Answer
source code will always be your friend.
def get_spot_price(self, **params): """https://developers.coinbase.com/api/v2#get-spot-price""" if 'currency_pair' in params: currency_pair = params['currency_pair'] else: currency_pair = 'BTC-USD' response = self._get('v2', 'prices', currency_pair, 'spot', data=params) return self._make_api_object(response, APIObject) def get_historic_prices(self, **params): """https://developers.coinbase.com/api/v2#get-historic-prices""" response = self._get('v2', 'prices', 'historic', data=params) return self._make_api_object(response, APIObject)
We can see that both functions call the same api endpoint. We see that get_spot_price
supports the currency_pair
argument and passes it as part of the api call. On the other hand get_historic_prices
does not.
I wonder what would happen if it did. Let’s try it:
from coinbase.wallet.client import Client from coinbase.wallet.model import APIObject client = Client(api_key, api_secret) client._make_api_object(client._get('v2', 'prices', 'ETH-USD', 'historic'), APIObject) <APIObject @ 0x10dd04938> { "currency": "USD", "prices": [ { "price": "52.60", "time": "2017-03-30T17:03:48Z" }, { "price": "52.60", "time": "2017-03-30T17:03:38Z" }, { "price": "52.54", "time": "2017-03-30T17:03:28Z" }, { "price": "52.54", "time": "2017-03-30T17:03:18Z" }, { "price": "52.54", "time": "2017-03-30T17:03:08Z" }, { "price": "52.53", "time": "2017-03-30T17:02:58Z" }, { "price": "52.53", "time": "2017-03-30T17:02:48Z" }, { "price": "52.53", "time": "2017-03-30T17:02:38Z" }, { "price": "52.53", "time": "2017-03-30T17:02:28Z" }, .....
Success!
I’ll sent a PR their way. but for now you can use my code snippet.