Bitfinex returns negative balance

Biftinex returns negative balance.

• OS: Linux protagonist 4.14.5-1-ARCH #1 SMP PREEMPT Sun Dec 10 14:50:30 UTC 2017 x86_64 GNU/Linux
• Programming Language: python
• CCXT version: 1.10.593
• Exchange: Bitfinex
• Method: fetch_balance

Reproduction requires private API keys.

From info field:

{'type': 'exchange', 'currency': 'eos', 'amount': '-0.00000032', 'available': '0.0'}

which goes to

{'free': 0.0, 'used': -3.2e-07, 'total': -3.2e-07}

after ccxt mangling.

This is definitely a bug on Bitfinex side…I’m not sure what to think of it.

I’d suggest max(0, amount) though am not sure if this the right call (since this error shall fall silently). Comments?

[mkutny]

Some time ago I’ve got a similar issue. I saw a negative amount via their UI but haven’t come up with an idea to check what would ccxt return.

I’m not sure we need to max(0, amount) though. The balance is negative. We need to reflect the reality to users even if we don’t like it.

[kroitor]

I would agree with @mkutny here, it’s obviously coming from their API, and we would not want to change values implicitly. I would suggest to account for that in logic, as we most likely cannot workaround this in the lib, better leave it for the user to decide. Closing this for now, until we have some followup on this. Feel free to reopen it if needed, or just continue posting here, we will be happy to answer.