Directions API help

Hi,
I am attempting to get round_trip routes of a set length, that avoid roads. I understand that the avoid_features value only allows a few options, one being “steps”. I see there is a custom_model option, I was wondering if I could use this to make the directions avoid certain route types. I am struggling to find detailed documentation about what values are valid, I just have the small hints offered in the api playground. Maybe I missed the link for this? I have tried entering the example provided, but I get an error saying custom_model is not available for profile foot-walking. Any suggestions greatly appreciated.

Hey,

as of now, custom_model is not available in our public API instances.
We are looking to change that, but it may take another few weeks.

You can host your own instance in the meantime.
For usage, once it is available, see Custom Models | openrouteservice backend documentation

Best regards