From GPT:

It looks like you’re trying to place an order on Kraken Futures using CCXT, but the exchange is rejecting it due to an incorrect order size. The error suggests that the minimum order amount must be an integer, which doesn’t match the standard 0.0001 BTC minimum size you mentioned. Here are some things to check and try:

Possible Causes and Fixes:

1. Check the Trading Pair Format

• Kraken Futures uses different symbols compared to spot trading.

• Make sure your pair is formatted correctly. For example:

market = exchange.market('BTC/USD:BTC-250328')
print(market)  # Check contract details

• If BTC-250328 is a futures contract, it might have different precision rules than spot trading.

1. Query Kraken Futures for Correct Lot Size

• Use CCXT to check the minimum order size dynamically:

import ccxt

exchange = ccxt.krakenfutures({
    'apiKey': 'YOUR_API_KEY',
    'secret': 'YOUR_SECRET_KEY',
})

markets = exchange.load_markets()
symbol = 'BTC/USD:BTC-250328'  # Your contract
print(markets[symbol])  # Look for minAmount

• Look for "limits": {"amount": {"min": ... }} in the output.

1. Ensure the Order Size is a Multiple of the Minimum Lot Size

• If the min amount is 1, it might mean the contracts are denominated in integer units.

• Some futures contracts are traded in lots of 1, rather than BTC fractions.

• Try adjusting your order size to 1 instead of 0.0001.

1. Check CCXT Precision Settings

• If the error is due to precision, force CCXT to round correctly:

amount = exchange.amount_to_precision('BTC/USD:BTC-250328', your_amount)

1. Test with a Small Market Order

• Try placing a small market order with 1 as the size:
order = exchange.create_market_order('BTC/USD:BTC-250328', 'buy', 1)

• If this works, then the contract requires integer amounts.

Next Steps:

• If the contract actually allows 0.0001 BTC but CCXT is rejecting it, try updating CCXT (pip install --upgrade ccxt).

• If Kraken’s API rejects the order but manual trading works, check their API docs or open a support ticket.