possibility to add custom pairlist filters and protections without changing the freqtrade sourcecode

[MrKrautee]

Its not really practical to add custom pairlist filters to freqtrade sources (ie: freqtrade/constants.py).

There should be the possibility to add custom pairlist filters and protections without changing the freqtrade source.

I suggest to add a new folder user_data/plugins for custom plugins.

[xmatthias]

well the point on having a fixed list is to allow config validation - to tell you if you misspelled a protection, or whatever.

removing that is a possibility - but currently, plugins are not meant to be user-extended on purpose.

Especially for protections - it's still marked as beta feature - which means the interface to these methods can change at any time.
Making this "user-specified" means the interface cannot change anymore easily as otherwise, an update would break your custom-made protections.

I also don't think that writing custom protections / filters is something people will do very often - and the documentation for doing so is in the developer / contributor section - so when writing it, contributing it to freqtrade should clearly be the goal (i don't think you can do too many "secret sauce" things to either of the two which would put you at a disadvantage if you shared it).

[bzed]

Actually I've just written a Pairlist plugin (nothing special, binance specific, but attached just in case somebody is looking for it) after some discussion in #strategy-chat. It would be really nice to be able to have some working plugin mechanism there.
Verifying the config could be done by trying to import the plugins and if that succeeds, go on.

https://gist.github.com/bzed/84775b495d553130cc2e0655a4d92306

[bibinvargheset]

Simillary, if there was a turnover pairlist it would be great, taking into account the volume and the traded price.

[hotrungnhan]

+1 I think the filter is important. can select the right pairs to trade.
For example, we could sort the pair by (current-min/min) with a lower refresh time to get all of the bottom pairs that will have a higher chance of rising.

[simwai]

That would be cool for blacklisting new announced delisting pairs