OpenAPI (aka Swagger)¶
This is not really an own subsystem but it offers an auto-generated OpenAPI 3.0 compliant specification of the RPC interface.
To generate the OpenAPI spec according to your current RPC configuration see Retrieving the OpenAPI spec.
The data types of all relevant input/output parameters of those workflows exposed via RPC must be defined (in the workflow config) to be able to generate the OpenAPI spec. For details see OpenAPI specific field parameters.