GDAX create limit buy and sell orders

• OS: Ubuntu 16.04.3 LTS
• Programming Language version: Python 3.5.1
• CCXT version: 1.10.749
• Exchange: GDAX
• Method: exchange.create_limit_buy_order and exchange.create_limit_sell_order

When trying to post a buy order i receive the following error: ccxt.base.errors.ExchangeError: gdax {"message":"Insufficient funds"}

I’m fetching the first bid and truncating to get the amount without float rounding to 8 decimals with the following code: price = exchange.fetch_l2_order_book(symbol)['bids'][0][0] amount = math.trunc(pow(10.0, 8) * (quote_balance / price)) / pow(10.0, 8)

Lowering the bid price buy 10 also causes the same error.

As for the limit sell order the order was filled as taker instead of maker so the fees were applied. Is there a way to force maker orders always?

[wannesdemaeght]

maker or taker is only defined by the price. If you post a limit SELL order equal or higher to lowest ask, it’s a maker order. If you post a limit BUY order equal or lower to highest bid, it’s a maker order.

Basically, if you post a trade which will get filled immediately, you’re a taker.

[kz0]

Problem of insufficient funds is because of this: quote_balance / price

That is only for the buying amount. If i had 10 ETH to sell my order amount would be my base balance.

Try exchange.create_limit_buy_order(symbol, amount, price, { ‘post_only’: true }). Hope it helps.

I’ve tested with the string first and it works, going to change it to bool to see if it works too. Thank you for your help.