Fetch fees and precisions for all currencies from kucoin

kucoin-fetch-fees.py

import ccxt
import json
import time
import re
import decimal
import math

kucoin = ccxt.kucoin({
    "apiKey": "",
    "secret": ""
})

kucoin.load_markets()
kucoin.fetch_currencies()

min_amounts_by_base = {}
precision_by_base = {}


def handle_precision_error(market, error):
    match = re.match(r'The precision of amount\((.*)\) is incorrect. The precision of (.+) is (\d+)', error['msg'])
    if not match:
        return False

    amount = int(match.groups()[2])
    currency = match.groups()[0]

    precision_by_base[market['base']] = amount
    print('Precision for %s (%s) is %s' % (market['symbol'], currency, amount))
    return True


def handle_amount_error(market, error):
    match = re.match('Min amount each order:([0-9.E-]+)', error['msg'])
    if not match:
        return False

    amount = float(match.groups()[0])
    min_amounts_by_base[market['base']] = amount
    print('Min amount for %s is %s' % (market['symbol'], amount))
    return True


print('Kucoin has %s markets' % len(kucoin.markets))
for market in kucoin.markets.values():
    if market['base'] in min_amounts_by_base:
        continue

    done = False
    right_precision_loaded = False
    num_failures = 0
    while not done:
        # Which precision to use for the order?
        # 
        # Try with the default first
        default_precision = kucoin.currencies[market['base']].get('precision', 10)
        precision = precision_by_base.get(market['base'], default_precision)
        lot = math.pow(10, -precision)

        print('Trying to create an order @ %s with lot size %s' % (market['symbol'], lot))

        try:
            order = kucoin.create_limit_buy_order(market['symbol'], lot, 1)
        except ccxt.InvalidOrder as e:
            msg = e.args[0]
            if msg.startswith('kucoin '):
                msg = msg[7:]
            data = json.loads(msg)
            
            # kucoin complains about the precision? Catch information, then retry.
            if handle_precision_error(market, data):
                if right_precision_loaded:
                    raise RuntimeError((
                        "kucoin gave us a precision error for the second time in a row, despite us trying "
                        "again with the proper precision. Market: {}, Precision: {}").format(market['symbol'], precision))
                right_precision_loaded = True
                continue

            if not handle_amount_error(market, data):
                raise RuntimeError('Unexpected error message received from kucoin, could not parse it:' % data)

            done = True
        except Exception as e:
            print(e)
            num_failures += 1
            if num_failures > 4:
                done = True
        else:
            raise RuntimeError('A kucoin order was submitted successfully. This is unexpected: %s' % order)

    time.sleep(1)

print()
print()
print(json.dumps(min_amounts_by_base))
print()
print()
print(json.dumps(precision_by_base))

stdout

{"BTC": 1e-05, "ETH": 1e-05, "BCH": 1e-05, "GAS": 0.1, "NEO": 0.01, "KCS": 1.0, "TMT": 1.0, "TFD": 1.0, "LALA": 1.0, "CS": 1.0, "DOCK": 1.0, "ETN": 1.0, "IHT": 1.0, "KICK": 1.0, "WAN": 1.0, "ACT": 1.0, "APH": 1.0, "BAX": 1.0, "DATX": 1.0, "DEB": 1.0, "ELEC": 1.0, "GO": 1.0, "HSR": 1.0, "IOTX": 1.0, "LOOM": 1.0, "LYM": 1.0, "MOBI": 1.0, "OMX": 1.0, "ONT": 1.0, "OPEN": 1.0, "QKC": 1.0, "SHL": 1.0, "SOUL": 1.0, "SPHTX": 1.0, "SRN": 1.0, "TKY": 1.0, "TOMO": 1.0, "TRAC": 1.0, "COV": 1.0, "DADI": 1.0, "ELF": 1.0, "LTC": 1.0, "MAN": 1.0, "PRL": 1.0, "STK": 1.0, "ZIL": 1.0, "ZPT": 1.0, "BPT": 1.0, "CAPP": 1.0, "POLY": 1.0, "TNC": 1.0, "XRB": 0.1, "AXP": 1.0, "COFI": 1.0, "CXO": 1.0, "DRGN": 1.0, "DTA": 1.0, "ING": 1.0, "MTN": 1.0, "OCN": 10.0, "PARETO": 1.0, "SNC": 1.0, "TEL": 10.0, "WAX": 1.0, "ADB": 1.0, "BOS": 1.0, "HAT": 1.0, "HKN": 1.0, "HPB": 1.0, "IOST": 1.0, "ARY": 1.0, "DBC": 1.0, "KEY": 1.0, "GAT": 1.0, "RPX": 1.0, "ACAT": 1.0, "CV": 10.0, "QLC": 1.0, "R": 1.0, "TIO": 1.0, "ITC": 1.0, "AGI": 10.0, "EXY": 1.0, "MWAT": 1.0, "DENT": 1.0, "J8T": 1.0, "LOCI": 1.0, "CAT": 1.0, "ARN": 1.0, "CAN": 1.0, "EOS": 0.1, "ETC": 0.1, "JNT": 1.0, "PLAY": 1.0, "CHP": 1.0, "DASH": 0.01, "DNA": 1.0, "EBTC": 1.0, "FOTA": 1.0, "PURA": 0.1, "UTK": 1.0, "CAG": 1.0, "GLA": 1.0, "HAV": 1.0, "SPF": 1.0, "TIME": 1.0, "ABT": 1.0, "BNTY": 1.0, "ELIX": 1.0, "ENJ": 1.0, "AIX": 1.0, "VEN": 1.0, "AION": 1.0, "DAT": 1.0, "QTUM": 0.1, "WTC": 0.1, "DGB": 1.0, "SNOV": 1.0, "BRD": 1.0, "AMB": 1.0, "BTM": 1.0, "MANA": 1.0, "RHOC": 1.0, "XLR": 1.0, "XAS": 0.1, "CHSB": 1.0, "UKG": 1.0, "POLL": 1.0, "FLIXX": 0.1, "INS": 1.0, "OMG": 0.1, "TFL": 1.0, "WPR": 1.0, "LEND": 1.0, "KNC": 0.001, "BCD": 0.001, "LA": 1.0, "ONION": 1.0, "POWR": 0.1, "SNM": 1.0, "BTG": 0.001, "PBL": 1.0, "MOD": 0.1, "PPT": 0.1, "BCPT": 1.0, "GVT": 0.1, "HST": 0.1, "SNT": 0.1, "SUB": 0.1, "NEBL": 0.1, "CVC": 0.1, "MTH": 1.0, "NULS": 0.1, "PAY": 0.1, "RDN": 1.0, "REQ": 1.0, "QSP": 0.1}


{"BTC": 8.0, "ETH": 7.0, "BCH": 8.0, "GAS": 4.0, "NEO": 6.0, "KCS": 4.0, "TMT": 4.0, "TFD": 4.0, "LALA": 4.0, "CS": 4.0, "DOCK": 4.0, "ETN": 2.0, "IHT": 4.0, "KICK": 4.0, "WAN": 4.0, "ACT": 4.0, "APH": 4.0, "BAX": 4.0, "DATX": 4.0, "DEB": 4.0, "ELEC": 4.0, "GO": 4.0, "HSR": 4.0, "IOTX": 4.0, "LOOM": 4.0, "LYM": 4.0, "MOBI": 4.0, "OMX": 4.0, "ONT": 4.0, "OPEN": 4.0, "QKC": 4.0, "SHL": 4.0, "SOUL": 4.0, "SPHTX": 4.0, "SRN": 4.0, "TKY": 4.0, "TOMO": 4.0, "TRAC": 4.0, "COV": 4.0, "DADI": 4.0, "ELF": 4.0, "LTC": 6.0, "MAN": 4.0, "PRL": 4.0, "STK": 4.0, "ZIL": 4.0, "ZPT": 4.0, "BPT": 4.0, "CAPP": 2.0, "POLY": 4.0, "TNC": 4.0, "XRB": 6.0, "AXP": 4.0, "COFI": 4.0, "CXO": 4.0, "DRGN": 4.0, "DTA": 4.0, "ING": 4.0, "MTN": 4.0, "OCN": 2.0, "PARETO": 4.0, "SNC": 4.0, "TEL": 2.0, "WAX": 4.0, "ADB": 4.0, "BOS": 4.0, "HAT": 4.0, "HKN": 4.0, "HPB": 4.0, "IOST": 4.0, "ARY": 4.0, "DBC": 4.0, "KEY": 4.0, "GAT": 4.0, "RPX": 4.0, "ACAT": 4.0, "CV": 2.0, "QLC": 4.0, "R": 6.0, "TIO": 4.0, "ITC": 4.0, "AGI": 4.0, "EXY": 4.0, "MWAT": 4.0, "DENT": 4.0, "J8T": 4.0, "LOCI": 4.0, "CAT": 4.0, "ARN": 4.0, "CAN": 4.0, "EOS": 4.0, "ETC": 6.0, "JNT": 4.0, "PLAY": 4.0, "CHP": 4.0, "DASH": 8.0, "DNA": 4.0, "EBTC": 4.0, "FOTA": 4.0, "PURA": 6.0, "UTK": 4.0, "CAG": 6.0, "GLA": 4.0, "HAV": 8.0, "SPF": 4.0, "TIME": 6.0, "ABT": 4.0, "BNTY": 4.0, "ELIX": 4.0, "ENJ": 4.0, "AIX": 4.0, "VEN": 4.0, "AION": 6.0, "DAT": 4.0, "QTUM": 4.0, "WTC": 4.0, "DGB": 4.0, "SNOV": 4.0, "BRD": 4.0, "AMB": 4.0, "BTM": 4.0, "MANA": 4.0, "RHOC": 6.0, "XLR": 4.0, "XAS": 6.0, "CHSB": 4.0, "UKG": 6.0, "POLL": 4.0, "FLIXX": 4.0, "INS": 4.0, "OMG": 4.0, "TFL": 4.0, "WPR": 4.0, "LEND": 4.0, "KNC": 4.0, "BCD": 8.0, "LA": 4.0, "ONION": 4.0, "POWR": 6.0, "SNM": 4.0, "BTG": 8.0, "PBL": 4.0, "MOD": 6.0, "PPT": 6.0, "BCPT": 6.0, "GVT": 6.0, "HST": 6.0, "SNT": 4.0, "SUB": 2.0, "NEBL": 6.0, "CVC": 4.0, "MTH": 4.0, "NULS": 6.0, "PAY": 4.0, "RDN": 6.0, "REQ": 4.0, "QSP": 6.0}

I tried using the minimum order values, but found out they are not currency based, they are pair based. I tried to capture them for most pairs and you'll see some different values for a single currency (f.e. EOS):

{"ABT-BTC":1.0,"ABT-ETH":1.0,"ACAT-BTC":1.0,"ACAT-ETH":1.0,"ACT-BTC":1.0,"ACT-ETH":1.0,"ADB-BTC":1.0,"ADB-ETH":1.0,"AGI-BTC":10.0,"AGI-ETH":10.0,"AION-BTC":1.0,"AION-ETH":1.0,"AIX-BTC":1.0,"AIX-ETH":1.0,"AMB-BTC":1.0,"AMB-ETH":1.0,"AOA-BTC":1.0,"AOA-ETH":1.0,"AOA-USDT":1.0,"APH-BTC":1.0,"APH-ETH":1.0,"ARN-BTC":1.0,"ARN-ETH":1.0,"ARY-BTC":1.0,"ARY-ETH":1.0,"AXPR-BTC":1.0,"AXPR-ETH":1.0,"BAX-BTC":1.0,"BAX-ETH":1.0,"BCHABC-BTC":0.001,"BCHABC-ETH":0.001,"BCHSV-BTC":0.001,"BCHSV-ETH":0.001,"BCHSV-USDT":0.000010,"BNTY-BTC":1.0,"BNTY-ETH":1.0,"BOS-BTC":1.0,"BOS-ETH":1.0,"BPT-BTC":1.0,"BPT-ETH":1.0,"BRD-BTC":1.0,"BRD-ETH":1.0,"BTC-PAX":0.000010,"BTC-TUSD":0.000010,"BTC-USDC":0.000010,"BTC-USDT":0.000010,"BTG-BTC":0.001,"BTG-ETH":0.001,"BTM-BTC":1.0,"BTM-ETH":1.0,"BU-BTC":1.0,"BU-ETH":1.0,"CAG-BTC":1.0,"CAG-ETH":1.0,"CAN-BTC":1.0,"CAN-ETH":1.0,"CAPP-BTC":1.0,"CAPP-ETH":1.0,"CAT-BTC":1.0,"CAT-ETH":1.0,"CBC-BTC":1.0,"CBC-ETH":1.0,"CHP-BTC":1.0,"CHP-ETH":1.0,"CHSB-BTC":1.0,"CHSB-ETH":1.0,"COFI-BTC":1.0,"COFI-ETH":1.0,"COSM-BTC":1.0,"COSM-ETH":1.0,"COV-BTC":1.0,"COV-ETH":1.0,"CPC-BTC":1.0,"CPC-ETH":1.0,"CRPT-BTC":0.1,"CRPT-ETH":0.1,"CS-BTC":1.0,"CS-ETH":1.0,"CS-KCS":1.0,"CVC-ETH":1.0,"CXO-BTC":1.0,"CXO-ETH":1.0,"DADI-BTC":1.0,"DADI-ETH":1.0,"DAG-BTC":1.0,"DAG-ETH":1.0,"DASH-BTC":0.01,"DASH-ETH":0.01,"DAT-BTC":1.0,"DAT-ETH":1.0,"DATX-BTC":1.0,"DATX-ETH":1.0,"DBC-BTC":1.0,"DBC-ETH":1.0,"DBC-NEO":1.0,"DCC-BTC":1.0,"DCC-ETH":1.0,"DCC-USDT":1.0,"DCR-BTC":0.1,"DCR-ETH":0.1,"DEB-BTC":1.0,"DEB-ETH":1.0,"DENT-BTC":1.0,"DENT-ETH":1.0,"DGB-BTC":1.0,"DGB-ETH":1.0,"DOCK-BTC":1.0,"DOCK-ETH":1.0,"DRGN-BTC":1.0,"DRGN-ETH":1.0,"DRGN-NEO":1.0,"DTA-BTC":1.0,"DTA-ETH":1.0,"EBTC-BTC":1.0,"EBTC-ETH":1.0,"EDN-BTC":0.1,"EDN-ETH":0.1,"EDR-BTC":1.0,"EDR-ETH":1.0,"EGT-BTC":1.0,"EGT-ETH":1.0,"ELA-BTC":1.0,"ELA-ETH":1.0,"ELEC-BTC":1.0,"ELEC-ETH":1.0,"ELF-BTC":1.0,"ELF-ETH":1.0,"ELIX-BTC":1.0,"ELIX-ETH":1.0,"ENJ-BTC":1.0,"ENJ-ETH":1.0,"EOS-BTC":0.1,"EOS-ETH":0.1,"EOS-KCS":0.1,"EOS-NEO":0.1,"EOS-USDT":1.0,"ETC-BTC":0.1,"ETC-ETH":0.1,"ETC-USDT":1.0,"ETH-BTC":0.000010,"ETH-PAX":0.000010,"ETH-TUSD":0.000010,"ETH-USDC":0.000010,"ETH-USDT":0.000010,"ETN-BTC":1.0,"ETN-ETH":1.0,"EXY-BTC":1.0,"EXY-ETH":1.0,"FLIXX-BTC":0.1,"FLIXX-ETH":0.1,"FOTA-BTC":1.0,"FOTA-ETH":1.0,"FTM-BTC":1.0,"FTM-ETH":1.0,"GAS-BTC":0.1,"GAS-NEO":0.1,"GAT-BTC":1.0,"GAT-ETH":1.0,"GGC-BTC":1.0,"GGC-USDT":1.0,"GMB-BTC":1.0,"GMB-ETH":1.0,"GO-BTC":1.0,"GO-ETH":1.0,"GO-USDT":1.0,"GVT-BTC":0.1,"GVT-ETH":0.1,"HAV-BTC":1.0,"HAV-ETH":1.0,"HAV-USDT":1.0,"HKN-BTC":1.0,"HKN-ETH":1.0,"HPB-BTC":1.0,"HPB-ETH":1.0,"HST-BTC":0.1,"HST-ETH":0.1,"IHT-BTC":1.0,"IHT-ETH":1.0,"ING-BTC":1.0,"ING-ETH":1.0,"INS-BTC":1.0,"INS-ETH":1.0,"IOG-BTC":0.1,"IOG-ETH":0.1,"IOST-BTC":1.0,"IOST-ETH":1.0,"IOTX-BTC":1.0,"IOTX-ETH":1.0,"ITC-BTC":1.0,"ITC-ETH":1.0,"ITC-USDT":1.0,"J8T-BTC":1.0,"J8T-ETH":1.0,"JNT-BTC":1.0,"JNT-ETH":1.0,"KCS-BTC":1.0,"KCS-ETH":1.0,"KCS-USDT":1.0,"KEY-BTC":1.0,"KEY-ETH":1.0,"KICK-BTC":1.0,"KICK-ETH":1.0,"KNC-BTC":0.001,"KNC-ETH":0.001,"LA-BTC":1.0,"LA-ETH":1.0,"LALA-BTC":1.0,"LALA-ETH":1.0,"LEND-BTC":1.0,"LEND-ETH":1.0,"LOC-BTC":1.0,"LOC-ETH":0.1,"LOCI-BTC":1.0,"LOCI-ETH":1.0,"LOOM-BTC":1.0,"LOOM-ETH":1.0,"LTC-BTC":0.01,"LTC-ETH":0.05,"LTC-KCS":1.0,"LTC-USDT":0.001,"LYM-BTC":1.0,"LYM-ETH":1.0,"LYM-USDT":1.0,"MAN-BTC":1.0,"MAN-ETH":1.0,"MANA-BTC":1.0,"MANA-ETH":1.0,"MOBI-BTC":1.0,"MOBI-ETH":1.0,"MOD-BTC":0.1,"MOD-ETH":0.1,"MTC-BTC":0.1,"MTC-ETH":0.1,"MTN-BTC":1.0,"MTN-ETH":1.0,"MVP-BTC":1.0,"MVP-ETH":1.0,"MWAT-BTC":1.0,"MWAT-ETH":1.0,"NANO-BTC":0.1,"NANO-ETH":0.1,"NANO-USDT":1.0,"NEBL-BTC":0.1,"NEBL-ETH":0.1,"NEO-BTC":0.1,"NEO-ETH":0.1,"NEO-KCS":0.01,"NEO-USDT":0.001,"NULS-BTC":0.1,"NULS-ETH":0.1,"NUSD-BTC":1.0,"NUSD-ETH":1.0,"NUSD-USDT":1.0,"OCN-BTC":10.0,"OCN-ETH":10.0,"OLT-BTC":1.0,"OLT-ETH":1.0,"OMG-BTC":0.1,"OMG-ETH":0.1,"OMX-BTC":1.0,"OMX-ETH":1.0,"ONION-BTC":1.0,"ONION-ETH":1.0,"ONT-BTC":1.0,"ONT-ETH":1.0,"ONT-USDT":1.0,"OPQ-BTC":1.0,"OPQ-ETH":1.0,"PAL-BTC":1.0,"PAL-ETH":1.0,"PARETO-BTC":1.0,"PARETO-ETH":1.0,"PAY-BTC":0.1,"PAY-ETH":1.0,"PHX-BTC":1.0,"PHX-ETH":1.0,"PLAY-BTC":1.0,"PLAY-ETH":1.0,"POLL-BTC":1.0,"POLL-ETH":1.0,"POLY-BTC":1.0,"POLY-ETH":1.0,"POWR-BTC":0.1,"POWR-ETH":0.1,"PPT-BTC":0.1,"PPT-ETH":0.1,"PURA-BTC":0.1,"PURA-ETH":0.1,"QKC-BTC":1.0,"QKC-ETH":1.0,"QLC-BTC":1.0,"QLC-ETH":1.0,"QSP-BTC":0.1,"QSP-ETH":0.1,"R-BTC":1.0,"R-ETH":1.0,"REQ-BTC":1.0,"REQ-ETH":1.0,"RHOC-BTC":1.0,"RHOC-ETH":1.0,"SNC-BTC":1.0,"SNC-ETH":1.0,"SNM-BTC":1.0,"SNM-ETH":1.0,"SNOV-BTC":1.0,"SNOV-ETH":1.0,"SNT-ETH":1.0,"SNX-BTC":1.0,"SNX-ETH":1.0,"SNX-USDT":1.0,"SOUL-BTC":1.0,"SOUL-ETH":1.0,"SPF-BTC":1.0,"SPF-ETH":1.0,"SPHTX-BTC":1.0,"SPHTX-ETH":1.0,"SRN-BTC":1.0,"SRN-ETH":1.0,"STK-BTC":1.0,"STK-ETH":1.0,"SUB-BTC":0.1,"SUB-ETH":0.1,"SUSD-BTC":1.0,"SUSD-ETH":1.0,"SUSD-USDT":1.0,"TFD-BTC":1.0,"TFD-ETH":1.0,"TFL-BTC":1.0,"TFL-ETH":1.0,"TIME-BTC":1.0,"TIME-ETH":1.0,"TKY-BTC":1.0,"TKY-ETH":1.0,"TKY-NEO":1.0,"TKY-USDT":1.0,"TMT-BTC":1.0,"TMT-ETH":1.0,"TNC-BTC":1.0,"TNC-ETH":1.0,"TNC-NEO":1.0,"TOMO-BTC":1.0,"TOMO-ETH":1.0,"TRAC-BTC":1.0,"TRAC-ETH":1.0,"TRX-BTC":1.0,"TRX-ETH":1.0,"TRX-USDT":1.0,"UKG-BTC":1.0,"UKG-ETH":1.0,"USDT-TUSD":1.0,"USDT-USDC":0.1,"USE-BTC":1.0,"USE-ETH":1.0,"UT-BTC":1.0,"UT-ETH":0.1,"UTK-BTC":1.0,"UTK-ETH":1.0,"VET-BTC":1.0,"VET-ETH":1.0,"VET-USDT":1.0,"VNX-BTC":1.0,"VNX-ETH":1.0,"WAN-BTC":1.0,"WAN-ETH":1.0,"WAX-BTC":1.0,"WAX-ETH":1.0,"WPR-BTC":1.0,"WPR-ETH":1.0,"XAS-BTC":0.1,"XAS-ETH":0.1,"XLM-BTC":1.0,"XLM-ETH":1.0,"XLM-USDT":1.0,"XLR-BTC":1.0,"XLR-ETH":1.0,"XRP-BTC":1.0,"XRP-ETH":1.0,"XRP-KCS":1.0,"XRP-NEO":1.0,"XRP-TUSD":1.0,"XRP-USDC":1.0,"XRP-USDT":1.0,"ZIL-BTC":1.0,"ZIL-ETH":1.0,"ZINC-BTC":1.0,"ZINC-ETH":1.0,"ZPT-BTC":1.0,"ZPT-ETH":1.0,"ZRX-BTC":1.0,"ZRX-ETH":1.0}

HTH