This revision is from 2024/12/12 03:44. You can Restore it.

To make a custom exchange.

config.json

{
    "max_open_trades": 100, 
    "stake_currency": "USDT",
    "stake_amount": 1000,
    "dry_run": true,
    "dry_run_wallet": 100000,
    "cache": "none", //avoid lookahead bias
    "enable_protections": false, //avoid lookahead bias
    "exit_pricing":{
        "price_side": "other"
    },
    "entry_pricing": {
        "price_side": "other"
    },
    "exchange": {
        "name": "custard_tart",
        "key": "",
        "secret": "",
        "pair_whitelist": ["TSLA/USDT"],
        "pair_blacklist": []
    },
    "pairlists": [
            {
            "method": "StaticPairList",
            "pairs": ["TSLA/USDT"]
            }
    ]
}
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Run...

freqtrade backtesting -c user_data/config.json -s SMA --timerange=20240101-20240201
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and

freqtrade download-data --exchange custard_tart
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and

freqtrade download-data --config user_data/config.json --timeframes 1m --timerange 20240101-
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• freqtrade - ERROR - Exchange "custard_tart" is not known to the ccxt library and therefore not available for the bot.

There are 3 places to edit.

Step 1: Create a Custom Exchange Class

Create a new file custom_exchange.py in the freqtrade/exchange directory. In this file, define a class custardtart.py.

freqtrade/exchange/custardtart.py

from freqtrade.exchange import Exchange

class Custardtart(Exchange):
    def __init__(self, config, validate=True, exchange_config=None, load_leverage_tiers=False):

    @property
    def name(self):
        return "custardtart"
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Register it with freqtrade/exchange/__init__.py

from freqtrade.exchange.custardtart import Custardtart
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Add it to /freqtrade/exchange/common.py

SUPPORTED_EXCHANGES = [
    "custardtart",
]
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freqtrade/exchange/check_exchange.py

from freqtrade.exchange.common import MAP_EXCHANGE_CHILDCLASS, SUPPORTED_EXCHANGES

....

    exchange = config.get("exchange", {}).get("name", "").lower()
    if not exchange:
        raise OperationalException(
            f"This command requires a configured exchange. You should either use "
            f"`--exchange <exchange_name>` or specify a configuration file via `--config`.\n"
            f"The following exchanges are available for Freqtrade: "
            f'{", ".join(available_exchanges())}'
        )

    if exchange in SUPPORTED_EXCHANGES:
        print("Custardtart exchange recognized")
        return True
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Make sure the __pycache__ is deleted.

Make it so custardtart.py exits gracefully.