I'm currently working on a firecrest client and found a few issues with the OpenAPI spec.

• the spec is OpenAPI version 3.1, but a lot of nullable properties use the anyOf: - type:... - type: nullable instead of nullable: true, which some client generation libraries had problems with
• the api spec says that environment variables can either be null, a dict of key value pairs or a list of key=value style strings. But then passing a list gives a {"errorType":"error","message":"(\"'list' object has no attribute 'items'\",)","data":null,"user":null} response and passing null gives {"errorType":"error","message":"(\"'list' object has no attribute 'items'\",). Passing a dict works as expected.